Canal line selection method and device based on ecological factors, computer equipment and readable storage medium

Abstract

The invention discloses a canal line selection method and device based on ecological factors, computer equipment and a readable storage medium, and the method comprises the steps: firstly obtaining the construction and line information of an undetermined canal, determining the development intensity and the related ecological sensitive region grade, and carrying out the line segmentation according to the development intensity and the related ecological sensitive region grade; and for the first section with high sensitivity, obtaining related core indexes, calculating an ecological limitation degree, and finally determining a canal line selection result according to the degree. According to the method, multiple ecological factors are comprehensively considered, a scientific basis is provided for canal line selection, and coordinated development of ecological protection and canal construction is achieved.

Description

Technical Field

[0001] The present invention relates to the field of data processing, and in particular to a canal route selection method, device, computer equipment and readable storage medium based on ecological factors. Background Art

[0002] With economic development and growing transportation demand, canal construction is becoming increasingly important.

[0003] However, traditional canal route selection methods often focus on engineering feasibility and economic benefits, and pay insufficient attention to the ecological environment.

[0004] This may lead to the destruction of ecological balance during the canal construction process, affecting biodiversity and ecosystem service functions. Summary of the invention

[0005] The object of the present invention is to provide a canal route selection method, device, computer equipment and readable storage medium based on ecological factors.

[0006] In a first aspect, an embodiment of the present invention provides a canal route selection method based on ecological factors, comprising: Obtaining canal construction information and canal route information of the canal to be determined, and determining the canal development intensity and the level of the ecologically sensitive area involved in the canal according to the canal construction information and the canal route information; According to the canal development intensity and the level of ecologically sensitive areas involved in the canal, the canal to be determined is segmented to obtain a plurality of segments; wherein the segments include a first segment and a second segment, and the sensitivity of the first segment is higher than that of the second segment; For the first section, obtain the core indicators of canal development intensity, core indicators of ecologically sensitive areas involved in the canal, core indicators of aquatic habitats, and core indicators of terrestrial habitat risks; The degree of ecological restriction of the canal to be determined is calculated based on the core indicators of the canal development intensity, the core indicators of the ecologically sensitive areas involved in the canal, the core indicators of the aquatic habitat environment and the core indicators of the terrestrial habitat risk; The canal route selection result of the pending canal is determined according to the degree of ecological restriction.

[0007] In a possible implementation manner, the obtaining of canal construction information and canal route information of the canal to be determined, and determining the canal development intensity and the level of the ecologically sensitive area involved in the canal according to the canal construction information and the canal route information, respectively, includes: Acquiring the canal construction information including artificial waterways, waterway projects, hub projects, water diversion projects and supporting projects; According to the artificial waterway, the waterway project, the hub project, the water diversion project and the supporting project, the spatial distribution of the engineering development intensity of different sections of the canal to be determined is obtained, and the spatial distribution of the engineering development intensity of different sections of the canal to be determined is used as the canal development intensity; ArcGIS spatial overlay analysis was used to obtain the canal route information, including the canal crossing ecologically sensitive spaces; The levels of ecologically sensitive areas involved in different sections of the canal to be determined are determined based on the sensitivity corresponding to the situation of the canal crossing the ecologically sensitive space; wherein, the levels of ecologically sensitive areas involved in the canal include prohibited category, extremely important restricted category, very important restricted category, relatively important restricted category and generally important restricted category, and the sensitivity of the prohibited category, the extremely important restricted category, the very important restricted category, the relatively important restricted category and the generally important restricted category decreases step by step.

[0008] In a possible implementation, the canal to be determined is segmented into multiple sections according to the canal development intensity and the level of ecologically sensitive areas involved in the canal, including: According to the canal development intensity and the level of ecological sensitive areas involved in the canal, the canal to be determined is segmented into low-sensitivity sections, ordinary sensitive sections, sensitive sections, high-sensitivity sections and extremely sensitive sections; wherein the sensitivity of the low-sensitivity sections, ordinary sensitive sections, sensitive sections, high-sensitivity sections and extremely sensitive areas increases step by step, the low-sensitivity sections are sections of the river without engineering and not involving sensitive areas, the ordinary sensitive sections are sections of the river without engineering and involving generally important restricted sensitive areas, the sensitive sections are sections of the river involving waterway engineering and / or hub engineering and involving relatively important restricted sensitive areas, the highly sensitive areas are sections of the river involving waterway engineering and / or hub engineering and involving very important restricted sensitive areas, and the extremely sensitive sections are sections of the river involving waterway engineering and / or hub engineering and involving extremely important restricted sensitive areas; The high sensitivity section and the extremely sensitive section are classified as the first section, and the low sensitivity section, the normal sensitivity section, and the sensitive section are classified as the second section.

[0009] In a possible implementation, for the first section, obtaining core indicators of canal development intensity, core indicators of canal-related ecological sensitive areas, core indicators of aquatic habitats, and core indicators of terrestrial habitat risks includes: For the first section, the ratio of the natural river to the total length of the canal route and the excavation length of the mountain-crossing section included in the artificial canal, the dredging volume per unit channel mileage, the reef blasting volume per unit channel mileage, the river channel straightening rate, the artificial bank protection construction rate and the total length of the widened river section included in the waterway engineering, the number of hubs per unit canal navigable mileage included in the hub engineering, the length of the water diversion project route included in the water diversion project and the ecological flow guarantee rate of the rivers along the canal are obtained as the core indicators of the canal development intensity; Obtain the impact of sensitive areas, including the number of crossing sensitive areas, the type of crossing sensitive areas, the number of different functional areas of crossing sensitive areas, the number of crossing core areas of sensitive areas, the total length of crossing sensitive areas, and the total length of crossing core areas of sensitive areas as the core indicators of ecologically sensitive areas involved in the canal; The core indicators of the aquatic habitat environment include the longitudinal connectivity index of the river, the ratio of the canal curvature to the original river curvature, the change in water oxygen content before and after the canal was built, and the reduction rate of water quality indicators in the river section before and after the bend was cut. The core indicators of the aquatic habitat environment include the biological loss caused by underwater construction, the aquatic species diversity index, and the change rate of migratory fish populations. The types of land risk changes before and after the canal construction are obtained, including changes in the number of risk types, changes in the number of low-risk type patches, and changes in the number of high-risk type patches. The changes in land risk area before and after the canal construction include changes in the area of ​​low-risk type patches and changes in the area of ​​high-risk type patches as the core indicators of the land habitat risk.

[0010] In a possible implementation, the method further includes: Acquire a preset research range corresponding to the first section; Dividing the preset research range into a plurality of grids; The ecological risk level of each grid is calculated using the formula: Ri=Ei×Vi; where Ri is the ecological risk level of the i-th grid, Ei is the landscape disturbance index of the i-th grid, and Vi is the landscape vulnerability index of the i-th grid; According to the ecological risk degree corresponding to each grid, the risk type of each corresponding section and the patch information of the corresponding risk type before and after the canal construction are determined; the risk types include low risk, lower risk, medium risk, higher risk and high risk, and the patch information before and after the canal construction includes patch quantity change information and patch area change information.

[0011] In a possible implementation, the degree of ecological restriction of the canal to be determined is calculated based on the core index of canal development intensity, the core index of ecologically sensitive areas involved in the canal, the core index of aquatic habitat environment, and the core index of terrestrial habitat risk, including: The core index of the canal development intensity, the core index of the canal-related ecological sensitive area, the core index of the aquatic habitat environment, and the core index of the terrestrial habitat risk are normalized to obtain the core index value of the canal development intensity, the core index value of the canal-related ecological sensitive area, the core index value of the aquatic habitat environment, and the core index value of the terrestrial habitat risk; According to the normalized core index value of the canal development intensity, the core index value of the canal-related ecological sensitive area, the core index value of the aquatic habitat environment and the core index value of the terrestrial habitat risk, the formula: DEL = n 1 S+n 2 O+n 3 W+n 4 R is calculated to obtain the degree of ecological restriction of the pending canal; wherein, DEL is the degree of ecological restriction of the pending canal, S is the core indicator value of canal development intensity, O is the core indicator value of ecologically sensitive areas involved in the canal, W is the core indicator value of aquatic habitat, R is the core indicator value of terrestrial habitat risk, and n1, n2, n3, and n4 are all weight coefficients.

[0012] In a possible implementation manner, determining the canal line selection result of the pending canal according to the ecological restriction degree includes: Obtaining the ecological restriction degree corresponding to each of the plurality of pending canals; determining the canal with the lowest ecological restriction among the plurality of canals to be determined as the target canal; The canal line selection result is determined based on the target canal.

[0013] In a second aspect, an embodiment of the present invention provides a canal line selection device based on ecological factors, comprising: An acquisition device is used to acquire canal construction information and canal route information of a canal to be determined, and determine the canal development intensity and the level of ecologically sensitive areas involved in the canal according to the canal construction information and the canal route information; segment the canal to be determined according to the canal development intensity and the level of ecologically sensitive areas involved in the canal to obtain a plurality of sections; wherein the sections include a first section and a second section, and the sensitivity of the first section is higher than that of the second section; for the first section, obtain the core indicators of canal development intensity, the core indicators of ecologically sensitive areas involved in the canal, the core indicators of aquatic habitats, and the core indicators of terrestrial habitat risks; calculate the degree of ecological restriction of the canal to be determined according to the core indicators of canal development intensity, the core indicators of ecologically sensitive areas involved in the canal, the core indicators of aquatic habitats, and the core indicators of terrestrial habitat risks; A line selection device is used to determine the canal line selection result of the pending canal according to the ecological restriction degree.

[0014] In a third aspect, an embodiment of the present invention provides a computer device, comprising a processor and a non-volatile memory storing computer instructions, wherein when the computer instructions are executed by the processor, the computer device executes the method described in the first aspect.

[0015] In a fourth aspect, an embodiment of the present invention provides a readable storage medium, wherein the readable storage medium includes a computer program, and when the computer program is executed, the computer device where the readable storage medium is located is controlled to execute the method described in the first aspect.

[0016] Compared with the prior art, the beneficial effects provided by the present invention include: adopting a canal line selection method, device, computer equipment and readable storage medium based on ecological factors disclosed in the present invention, including: first obtaining the construction and line information of the canal to be determined, determining the development intensity and the level of ecological sensitive areas involved, and segmenting the line accordingly.

[0017] For the first section with high sensitivity, relevant core indicators are obtained, the degree of ecological restriction is calculated, and finally the canal route selection result is determined based on this degree.

[0018] This method comprehensively considers multiple ecological factors, provides a scientific basis for canal route selection, and achieves the coordinated development of ecological protection and canal construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below.

[0020] It should be understood that the following drawings depict only certain embodiments of the present invention and therefore should not be viewed as limiting the scope.

[0021] For ordinary technicians in this field, other related drawings can be obtained based on these drawings without any creative work.

[0022] Figure 1 A schematic diagram of the steps of a canal route selection method based on ecological factors provided by an embodiment of the present invention; Figure 2 A schematic block diagram of the structure of a canal line selection device based on ecological factors provided by an embodiment of the present invention; Figure 3 A schematic block diagram of the structure of a computer device provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0023] To make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0024] Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0025] The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

[0026] The specific implementation modes of the present invention are described in detail below in conjunction with the accompanying drawings.

[0027] In order to solve the technical problems in the aforementioned background technology, Figure 1 A flow chart of a canal route selection method based on ecological factors provided in an embodiment of the present disclosure is provided, and the canal route selection method based on ecological factors is introduced in detail below.

[0028] Step S201, obtaining canal construction information and canal route information of the canal to be determined, and determining the canal development intensity and the level of the ecologically sensitive area involved in the canal according to the canal construction information and the canal route information; Step S202, segmenting the canal to be determined according to the canal development intensity and the level of the ecologically sensitive area involved in the canal to obtain a plurality of sections; wherein the sections include a first section and a second section, and the sensitivity of the first section is higher than that of the second section; Step S203, for the first section, obtaining core indicators of canal development intensity, core indicators of canal-related ecological sensitive areas, core indicators of aquatic habitats, and core indicators of terrestrial habitat risks; Step S204, calculating the ecological restriction degree of the canal to be determined according to the core index of the canal development intensity, the core index of the ecologically sensitive area involved in the canal, the core index of the aquatic habitat environment and the core index of the terrestrial habitat risk; Step S205, determining the canal line selection result of the pending canal according to the ecological restriction degree.

[0029] In the embodiment of the present invention, for example, it is assumed that we are evaluating a canal under planning - "XX Canal".

[0030] First, the server obtains the canal construction information and canal route information of the XX Canal through channels such as data provided by the open source platform, field survey reports, and planning documents.

[0031] Canal construction information may include: the planned length of the canal, the type of waterway engineering to be adopted (such as the scope and depth of waterway dredging, whether there is a need for reef blasting, whether it is necessary to straighten the canal, etc.), whether there is a plan to build a shipping hub and its scale, whether water diversion projects are involved and their scale, whether there are supporting navigation obstruction building reconstruction projects, etc.

[0032] Canal route information may include: the geographical area through which the canal route passes, and its relative position to existing nature reserves, water source protection areas, ecological red lines and basic farmland.

[0033] The server analyzes and processes this information to determine the intensity of canal development.

[0034] For example, by calculating the dredging volume per unit waterway mileage, assuming that the planned dredging range is 50 kilometers and the total dredging volume is 1 million cubic meters, the dredging volume per unit waterway mileage is 20,000 cubic meters / kilometer.

[0035] For example, when calculating the river channel straightening rate, assuming that the original total length of the river channel is 100 kilometers, and the planned length of the river channel after straightening is 80 kilometers, the river channel straightening rate is 20%.

[0036] At the same time, the server uses ArcGIS spatial overlay analysis and other technologies to identify the ecologically sensitive areas that the canal route passes through.

[0037] The hypothetical analysis found that the canal route passed through an experimental area of ​​a nature reserve. According to relevant regulations, the ecological sensitive area involved was determined to be Level 3.

[0038] The server divides the XX Canal into segments based on the canal development intensity and ecological sensitivity zone level determined previously.

[0039] For example, suppose there is a 30-kilometre section of the canal route where there is waterway engineering (such as dredging and reef blasting) and an experimental area that crosses a nature reserve.

[0040] According to the segmentation rule, the server divides this section into a sensitive section, namely the first section.

[0041] For the other 20-kilometer section of the line, there is no construction work and does not involve any sensitive areas. The server divides it into a low-sensitivity section, namely the second section.

[0042] For the parts classified as sensitive sections, the server further obtains more detailed core indicators.

[0043] In terms of the core indicators of canal development intensity, the server obtained that the excavation length of the cross-mountain section of this section is 5 kilometers, the ratio of natural rivers to the total length of the canal line is 30%, and the reef blasting volume per unit waterway mileage is 15,000 cubic meters / kilometer.

[0044] Regarding the core indicators of ecologically sensitive areas involved in the canal, the server determined that there are two types of sensitive areas crossed (such as nature reserve experimental areas and drinking water source quasi-protection areas), the number of sensitive areas crossed is three, and the total length of the sensitive areas crossed is 8 kilometers.

[0045] In terms of core indicators of aquatic habitats, the server calculated through relevant monitoring data and models and obtained that the river's longitudinal connectivity index was 70%, the ratio of the canal's curvature to the original river's curvature was 80%, the change in water oxygen content before and after the construction of the canal was -10%, and the biological loss caused by underwater construction such as dredging and reef blasting was 500kg.

[0046] In terms of core indicators of terrestrial habitat risk, the server divides the sensitive area into grids with a boundary length of 2 kilometers, calculates the landscape disturbance index and landscape vulnerability index of each grid, and then determines the degree of ecological risk in the area. For example, the landscape disturbance index of a grid is 0.6, the landscape vulnerability index is 0.4, and the ecological risk level is 0.24.

[0047] The server calculates the degree of ecological limitation (DEL) based on the obtained core indicators according to the established calculation methods and formulas.

[0048] First, each indicator is standardized.

[0049] For example, for the indicator of dredging volume per unit waterway mileage, assuming that the maximum value of existing canals at home and abroad is 30,000 cubic meters / km and the minimum value is 5,000 cubic meters / km, and the actual value of this section of the XX Canal is 20,000 cubic meters / km, then the standardized indicator value is: I=(2-0.5) / (3-0.5)=0.6.

[0050] Then, according to the weight ratio (n 1 :n 2 :n 3 :n 4 =3:4:2:1) and the standardized values ​​of each indicator to calculate the degree of ecological limitation (DEL).

[0051] It is assumed that the weighted sum of the standardized values ​​of various indicators of canal development intensity (S) is 0.7, the weighted sum of the standardized values ​​of various indicators of ecologically sensitive areas involved in the canal (O) is 0.8, the weighted sum of the standardized values ​​of various indicators of aquatic habitat (W) is 0.6, and the weighted sum of the standardized values ​​of various indicators of terrestrial habitat risk (R) is 0.5.

[0052] Then DEL=3×0.7+4×0.8+2×0.6+1×0.5=2.1+3.2+1.2+0.5=7 The server calculated that the ecological limitation level (DEL) of the sensitive section of XX Canal is 7.

[0053] If other possible routing options are also evaluated, their respective DEL values ​​are calculated and compared.

[0054] Assume that the DEL value of another line solution is 6.

[0055] Since 6<7, it means that the other route plan has fewer restrictions, and the server will recommend it to relevant decision makers as a better canal route selection result.

[0056] When determining the final canal route selection, the server will also take into account other factors, such as project construction costs, operational benefits, and socio-economic impacts.

[0057] However, in this route selection method based on ecological factors, the degree of ecological limitation is a key decision-making basis.

[0058] The final route selection results will provide a scientific, reasonable and eco-friendly solution for the planning and construction of the canal, so as to minimize the damage to the ecological environment and achieve the goal of sustainable development.

[0059] In the embodiment of the present invention, the canal construction information and canal route information of the pending canal are obtained, and the canal development intensity and the level of the ecologically sensitive area involved in the canal are determined according to the canal construction information and the canal route information, respectively, which can be implemented through the following examples.

[0060] Acquiring the canal construction information including artificial waterways, waterway projects, hub projects, water diversion projects and supporting projects; According to the artificial waterway, the waterway project, the hub project, the water diversion project and the supporting project, the spatial distribution of the engineering development intensity of different sections of the canal to be determined is obtained, and the spatial distribution of the engineering development intensity of different sections of the canal to be determined is used as the canal development intensity; ArcGIS spatial overlay analysis was used to obtain the canal route information, including the canal crossing ecologically sensitive spaces; The levels of ecologically sensitive areas involved in different sections of the canal to be determined are determined based on the sensitivity corresponding to the situation of the canal crossing the ecologically sensitive space; wherein, the levels of ecologically sensitive areas involved in the canal include prohibited category, extremely important restricted category, very important restricted category, relatively important restricted category and generally important restricted category, and the sensitivity of the prohibited category, the extremely important restricted category, the very important restricted category, the relatively important restricted category and the generally important restricted category decreases step by step.

[0061] In the embodiment of the present invention, illustratively, first, the server obtains the canal construction information of the pending canal "XX Canal".

[0062] This includes detailed artificial waterway planning, such as the excavation plan for the mountain-crossing section, determining the length and location of the excavation; in terms of waterway engineering, clarifying the specific mileage and depth of channel dredging, the scope and scale of reef blasting, the straightening sections and the design of bank protection construction; in terms of hub engineering, mastering the new construction, reconstruction or expansion plan of the shipping hub, including its location and scale; in terms of water diversion engineering, obtaining information such as the site selection of the water replenishment reservoir, the direction and length of the water diversion line; in terms of supporting projects, understanding the specific arrangements for the reconstruction of navigation-obstructing buildings.

[0063] Next, the server analyzes and calculates the engineering development intensity of different sections of the “XX Canal” based on the detailed engineering information obtained.

[0064] For example, in a 50-kilometer river channel, 10 kilometers of it is excavated for the mountain-crossing section of the artificial waterway. In terms of waterway engineering, the dredging volume is 200,000 cubic meters, the reef blasting volume is 100,000 cubic meters, the straightening rate is 15%, the bank protection construction length is 8 kilometers, and there is a shipping hub in this section.

[0065] Through these specific data and corresponding calculation methods, the server obtains indicators such as dredging volume and reef blasting volume per unit waterway mileage of this river section, and then determines the engineering development intensity of this river section.

[0066] By summarizing the analysis results of each river section, the server obtained the spatial distribution of engineering development intensity in different sections of the "XX Canal" and used it as the canal development intensity.

[0067] At the same time, the server uses ArcGIS spatial overlay analysis technology to process the canal route information and obtain the situation of the "XX Canal" crossing ecologically sensitive spaces.

[0068] The server collects relevant data such as regional land space planning, ecological environment zoning control plans, nature conservation area planning, water source protection area planning, and ecological environment conditions, and overlays and analyzes the canal route with the spatial data of these ecologically sensitive areas.

[0069] For example, the analysis found that the canal route passes through the buffer zone of a national nature reserve, the core area of ​​an aquatic germplasm resources protection zone, and some ecological red line areas.

[0070] Then, the server determines the level of ecologically sensitive areas involved in different sections of the “XX Canal” based on the sensitivity of the canal crossing ecologically sensitive spaces.

[0071] Because it passes through the buffer zone of the national nature reserve, according to regulations, this section of the river is identified as an extremely important restricted category; the river section passing through the core area of ​​the aquatic germplasm resources protection zone is designated as an extremely important restricted category; and the river section involving the ecological red line area is identified as a relatively important restricted category.

[0072] Through such analysis, the server clarified the levels of ecologically sensitive areas involved in different sections of the "XX Canal", providing an important basis for subsequent line segmentation and line selection decisions.

[0073] Throughout the entire process, the server ensures comprehensive and accurate grasp of canal construction information and route information with precise and efficient data processing and analysis capabilities, thereby scientifically and rationally determining the canal development intensity and the level of ecologically sensitive areas involved.

[0074] In the embodiment of the present invention, the line of the canal to be determined is segmented into multiple sections according to the canal development intensity and the level of ecologically sensitive areas involved in the canal, which can be implemented through the following examples.

[0075] According to the canal development intensity and the level of ecological sensitive areas involved in the canal, the canal to be determined is segmented into low-sensitivity sections, ordinary sensitive sections, sensitive sections, high-sensitivity sections and extremely sensitive sections; wherein the sensitivity of the low-sensitivity sections, ordinary sensitive sections, sensitive sections, high-sensitivity sections and extremely sensitive areas increases step by step, the low-sensitivity sections are sections of the river without engineering and not involving sensitive areas, the ordinary sensitive sections are sections of the river without engineering and involving generally important restricted sensitive areas, the sensitive sections are sections of the river involving waterway engineering and / or hub engineering and involving relatively important restricted sensitive areas, the highly sensitive areas are sections of the river involving waterway engineering and / or hub engineering and involving very important restricted sensitive areas, and the extremely sensitive sections are sections of the river involving waterway engineering and / or hub engineering and involving extremely important restricted sensitive areas; The high sensitivity section and the extremely sensitive section are classified as the first section, and the low sensitivity section, the normal sensitivity section, and the sensitive section are classified as the second section.

[0076] In the embodiment of the present invention, illustratively, the server obtains relevant data of a canal named "XX Canal".

[0077] First, the line is divided into sections according to the intensity of canal development and the level of ecologically sensitive areas involved.

[0078] When analyzing the intensity of canal development, the server obtained engineering information of each river section.

[0079] For example, in a 30-kilometer river channel, there is no engineering construction and no ecologically sensitive areas are involved. The server classifies this section as a low-sensitivity area.

[0080] As for another 25-kilometer section of the river, there is no engineering construction, but it involves the ecological red line area (a general important restricted sensitive area), so the server classifies this section as a general sensitive area.

[0081] For a 40-kilometer river section, there are waterway projects (such as dredging and widening) and it involves the experimental area of ​​the nature reserve (a relatively important restricted sensitive area), so the server determines it as a sensitive section.

[0082] There is also a 20-kilometer river section, which not only has a hub project but also passes through the first-level drinking water source protection zone (a very important restricted sensitive area). The server divides this section into a highly sensitive section.

[0083] Finally, a 15-kilometer section of the river, which involves the core area of ​​a national nature reserve and where waterway engineering is ongoing, was identified by the server as an extremely sensitive section.

[0084] After detailed analysis and judgment by the server, the "XX Canal" was successfully divided into low-sensitivity sections, ordinary-sensitivity sections, sensitive sections, high-sensitivity sections and extremely sensitive sections.

[0085] Next, the server classifies the highly sensitive segment and the extremely sensitive segment as the first segment, because these two segments are extremely sensitive and require special attention and stricter protection and assessment measures.

[0086] At the same time, the low-sensitivity section, the normal-sensitivity section and the sensitive section are classified as the second section.

[0087] For example, when processing data, the server found that Section A of the "XX Canal" was a low-sensitivity section. There was no engineering construction in this section and there were no ecologically sensitive areas around it.

[0088] Section B is a general sensitive section. Although there are no projects, it involves ecologically sensitive areas of general importance and restrictions, such as some ecological spaces.

[0089] Section C is a sensitive section because dredging work for waterway engineering is carried out here and it involves sensitive areas of more important restrictions, such as the experimental area of ​​the nature reserve.

[0090] Section D is classified as a highly sensitive section because it contains key projects and passes through very important restricted sensitive areas, such as the first-level protection area for drinking water sources.

[0091] Section E is an extremely sensitive section because it not only has waterway projects but also involves prohibited sensitive areas, such as the core area of ​​a national nature reserve.

[0092] Through such clear and detailed segmentation and classification, the server provides clear and accurate basic information for subsequent evaluation, comparison and formulation of corresponding protection measures.

[0093] In an embodiment of the present invention, for the first section, obtaining the core indicators of canal development intensity, the core indicators of canal-related ecological sensitive areas, the core indicators of aquatic biological habitats, and the core indicators of terrestrial habitat risks can be implemented through the following examples.

[0094] For the first section, the ratio of the natural river to the total length of the canal route and the excavation length of the mountain-crossing section included in the artificial canal, the dredging volume per unit channel mileage, the reef blasting volume per unit channel mileage, the river channel straightening rate, the artificial bank protection construction rate and the total length of the widened river section included in the waterway engineering, the number of hubs per unit canal navigable mileage included in the hub engineering, the length of the water diversion project route included in the water diversion project and the ecological flow guarantee rate of the rivers along the canal are obtained as the core indicators of the canal development intensity; Obtain the impact of sensitive areas, including the number of crossing sensitive areas, the type of crossing sensitive areas, the number of different functional areas of crossing sensitive areas, the number of crossing core areas of sensitive areas, the total length of crossing sensitive areas, and the total length of crossing core areas of sensitive areas as the core indicators of ecologically sensitive areas involved in the canal; The core indicators of the aquatic habitat environment include the longitudinal connectivity index of the river, the ratio of the canal curvature to the original river curvature, the change in water oxygen content before and after the canal was built, and the reduction rate of water quality indicators in the river section before and after the bend was cut. The core indicators of the aquatic habitat environment include the biological loss caused by underwater construction, the aquatic species diversity index, and the change rate of migratory fish populations. The types of land risk changes before and after the canal construction are obtained, including changes in the number of risk types, changes in the number of low-risk type patches, and changes in the number of high-risk type patches. The changes in land risk area before and after the canal construction include changes in the area of ​​low-risk type patches and changes in the area of ​​high-risk type patches as the core indicators of the land habitat risk.

[0095] In the embodiment of the present invention, for example, the first section named "XX Canal" is taken as an example.

[0096] The server first obtains the core indicators of canal development intensity. For the artificial canal, the server calculates that the ratio of natural rivers to the total length of the canal line is 20%, and the excavation length of the mountain-crossing section is 8 kilometers. In terms of waterway engineering, the server analyzes that the dredging volume per unit waterway mileage is 15,000 cubic meters / kilometer, the reef blasting volume per unit waterway mileage is 8,000 cubic meters / kilometer, the river channel straightening rate is 12%, the artificial revetment construction rate is 30%, and the total length of the widened river section is 15 kilometers. In terms of hub engineering, the number of hubs per unit canal navigable mileage is 2 / 100 kilometers.

[0097] In the water diversion project, the length of the water diversion project line is 50 kilometers, and the ecological flow guarantee rate of rivers along the canal is 80%.

[0098] Next, the server obtains the core indicators of the ecologically sensitive areas involved in the canal.

[0099] After detailed data analysis, the server determined that the number of sensitive areas crossed was 3 and there were two types of sensitive areas, namely nature reserves and drinking water source protection areas.

[0100] The number of different functional areas crossing the sensitive area is 4, the number of core areas crossing the sensitive area is 1, the total length of crossing the sensitive area is 10 kilometers, and the total length of crossing the core area of ​​the sensitive area is 3 kilometers.

[0101] Then, the server obtains the core indicators of the aquatic habitat environment.

[0102] In terms of aquatic habitats, the server calculated that the river's longitudinal connectivity index was 75%, the ratio of the canal's curvature to the original river's curvature was 85%, the change in water oxygen content before and after the canal was built was -8%, and the reduction rate of water quality indicators before and after the bend was 10%. For aquatic organisms, the biological loss caused by underwater construction was 300 kilograms, the aquatic species diversity index was 0.7, and the migratory fish population change rate was -15%.

[0103] Finally, the server obtains the core indicators of terrestrial habitat risk.

[0104] In terms of the types of changes in land risks before and after the construction of the canal, the server determined that the number of risk types increased by 2, the number of low-risk type patches decreased by 10%, and the number of high-risk type patches increased by 5%.

[0105] In terms of changes in land risk area before and after the construction of the canal, the area of ​​low-risk type patches decreased by 8%, while the area of ​​high-risk type patches increased by 6%.

[0106] By accurately acquiring these core indicators of the first section of the "XX Canal", the server provides comprehensive and accurate data support for the subsequent calculation of the degree of ecological restriction and determination of the canal route selection results, which helps to more scientifically evaluate the impact of canal construction on the ecological environment and formulate more reasonable route selection plans and protection measures.

[0107] In the embodiments of the present invention, the following implementation modes are also provided.

[0108] Acquire a preset research range corresponding to the first section; Dividing the preset research range into a plurality of grids; The ecological risk level of each grid is calculated using the formula: Ri=Ei×Vi; where Ri is the ecological risk level of the i-th grid, Ei is the landscape disturbance index of the i-th grid, and Vi is the landscape vulnerability index of the i-th grid; According to the ecological risk degree corresponding to each grid, the risk type of each corresponding section and the patch information of the corresponding risk type before and after the canal construction are determined; the risk types include low risk, lower risk, medium risk, higher risk and high risk, and the patch information before and after the canal construction includes patch quantity change information and patch area change information.

[0109] In the embodiment of the present invention, for example, the highly sensitive section of "XX Canal" is taken as the first section.

[0110] The server first obtains the preset research range corresponding to the first section, assuming that the preset research range is 100 square kilometers.

[0111] Next, the server divides the preset research area of ​​100 square kilometers into multiple grids.

[0112] Assuming that the grid is divided with a boundary length of 2 km, the entire study area is divided into 2500 sampling grids.

[0113] Then, the server uses the formula Ri=Ei×Vi to calculate the ecological risk level of each grid.

[0114] For the calculation of the landscape disturbance index Ei, assuming that the landscape fragmentation index Ci of grid i ranks 100th among all grid landscape fragmentation indices, and the total number of grids is 2500, the normalized landscape fragmentation index Cni of grid i is Cni=100 / 2500=0.04.

[0115] Assuming that the landscape separation index Si of grid i ranks 200th, the normalized landscape separation index Sni=200 / 2500=0.08.

[0116] Assuming that the landscape dominance index Di of grid i ranks 50th, the normalized landscape dominance index Dni=50 / 2500=0.02.

[0117] The weights a, b, and c are set to 0.5, 0.3, and 0.2, respectively, so the landscape disturbance index Ei of grid i = 0.5×0.04+0.3×0.08+0.2×0.02=0.04.

[0118] For the calculation of the landscape vulnerability index Vi, it is assumed that there are three landscape types in grid i, namely water area, cultivated land and forest land, and their landscape vulnerability coefficients Vj are 0.2, 0.3 and 0.1 respectively.

[0119] Assuming that the landscape area index Pij of water area is 0.4, the landscape area index of cultivated land is 0.3, and the landscape area index of forest land is 0.3, then the landscape vulnerability index Vi of grid i is 0.2×0.4+0.3×0.3+0.1×0.3=0.22.

[0120] Finally, the ecological risk level of grid i is calculated to be Ri=0.04×0.22=0.0088.

[0121] The server repeats the above calculation process to obtain the ecological risk level of each grid.

[0122] According to the ecological risk level corresponding to each grid, the server determines the risk type of each corresponding section and the patch information before and after the canal construction of the corresponding risk type.

[0123] For example, after calculation and analysis, the server determined that the risk type of some sections was low risk. Before the construction of the canal, the number of low-risk patches was 500 and the area was 20 square kilometers; after the construction of the canal, the number of low-risk patches became 450 and the area became 18 square kilometers.

[0124] For higher-risk sections, before the construction of the canal, the number of higher-risk patches was 150 and the area was 8 square kilometers; after the construction of the canal, the number of patches increased to 200 and the area increased to 10 square kilometers.

[0125] Through such detailed calculations and analysis, the server can comprehensively and accurately assess the impact of canal construction on ecological risks in various sections, and provide strong data support for subsequent decision-making and protection measures.

[0126] In an embodiment of the present invention, the degree of ecological restriction of the pending canal is calculated based on the core indicator of the canal development intensity, the core indicator of the ecologically sensitive area involved in the canal, the core indicator of the aquatic habitat environment and the core indicator of the terrestrial habitat risk, which can be implemented through the following example.

[0127] The core index of the canal development intensity, the core index of the canal-related ecological sensitive area, the core index of the aquatic habitat environment, and the core index of the terrestrial habitat risk are normalized to obtain the core index value of the canal development intensity, the core index value of the canal-related ecological sensitive area, the core index value of the aquatic habitat environment, and the core index value of the terrestrial habitat risk; According to the normalized core index value of the canal development intensity, the core index value of the canal-related ecological sensitive area, the core index value of the aquatic habitat environment and the core index value of the terrestrial habitat risk, the formula: DEL = n 1 S+n 2 O+n 3 W+n 4R is used to calculate the ecological restriction degree of the canal to be determined; where DEL is the ecological restriction degree of the canal to be determined, S is the core indicator value of the canal development intensity, O is the core indicator value of the ecologically sensitive area involved in the canal, W is the core indicator value of the aquatic habitat environment, R is the core indicator value of the terrestrial habitat risk, and n 1 、n 2 、n 3 、n 4 are all weight coefficients.

[0128] In the embodiment of the present invention, for example, it is assumed that we are evaluating a pending canal named "XX Canal".

[0129] First, the server normalizes the obtained core indicators of canal development intensity, core indicators of ecologically sensitive areas involved in the canal, core indicators of aquatic biological habitats, and core indicators of terrestrial habitat risks.

[0130] For example, for the dredging volume per unit waterway mileage in the core indicator of canal development intensity, the original data is 18,000 cubic meters per kilometer.

[0131] By referring to the relevant data of existing canals at home and abroad, the maximum value is determined to be 25,000 cubic meters / km and the minimum value is 5,000 cubic meters / km.

[0132] After calculation, the normalized core index value of canal development intensity is: (1.8-0.5) / (2.5-0.5)=1.3 / 2=0.65.

[0133] For the total length of the canal crossing sensitive areas, which is one of the core indicators of ecologically sensitive areas, the original data is 8 kilometers.

[0134] By analyzing relevant regulations and standards, the maximum value is determined to be 15 kilometers and the minimum value is 2 kilometers.

[0135] The normalized core index value of the canal's ecologically sensitive areas is: (8-2) / (15-2)=6 / 13≈0.46.

[0136] For the aquatic species diversity index in the core indicators of aquatic habitat environment, the original data was 0.6.

[0137] By comparing the standard values ​​in similar ecological environments, the maximum value was determined to be 1 and the minimum value was 0.2.

[0138] The normalized core indicator value of aquatic habitat environment is: (0.6-0.2) / (1-0.2)=0.4 / 0.8=0.5.

[0139] Regarding the change in the area of ​​high-risk patches in the core indicators of terrestrial habitat risk, the original data showed an increase of 5%.

[0140] By studying the range of risk changes in relevant areas, it was determined that the maximum value was an increase of 15% and the minimum value was a decrease of 5%.

[0141] The normalized core indicator value of terrestrial habitat risk is: (5-(-5)) / (15-(-5))=10 / 20=0.5.

[0142] Next, the server uses the formula DEL=n according to the normalized indicator value. 1 S+n 2 O+n 3 W+n 4 R is used to calculate the degree of ecological limitation of “XX Canal”.

[0143] Assuming the weight coefficient n 1 is 0.3, n 2 is 0.4, n 3 is 0.2, n 4 is 0.1. Then: DEL=0.3×0.65+0.4×0.46+0.2×0.5+0.1×0.5 =0.195+0.184+0.1+0.05 =0.529.

[0144] Through the above detailed calculation process, the server concluded that the ecological restriction degree of "XX Canal" is 0.529.

[0145] This result will provide important data support for subsequent canal route selection decisions, helping to determine the most appropriate route plan to minimize adverse impacts on the ecological environment.

[0146] In the embodiment of the present invention, the canal line selection result of the pending canal determined according to the ecological restriction degree can be implemented through the following examples.

[0147] Obtaining the ecological restriction degree corresponding to each of the plurality of pending canals; determining the canal with the lowest ecological restriction among the plurality of canals to be determined as the target canal; The canal line selection result is determined based on the target canal.

[0148] In the embodiment of the present invention, for example, it is assumed that there are three pending canals that need to be evaluated for line selection, namely "Canal A", "Canal B" and "Canal C".

[0149] The server first obtains the ecological restriction levels corresponding to the three pending canals.

[0150] For "Canal A", the server concludes that its ecological restriction degree is 0.6 through calculation and analysis in the previous steps.

[0151] During the calculation process, core indicators of canal development intensity, such as the amount of reef blasting per unit of waterway mileage, were normalized and weighted to obtain corresponding values; core indicators of the canal involving ecologically sensitive areas, such as the number and type of sensitive areas crossed, were processed and included in the calculation; core indicators of aquatic habitats, such as changes in the aquatic species diversity index, were also calculated in accordance with regulations; core indicators of terrestrial habitat risks, including changes in the area of ​​high-risk patches, were also processed and calculated, and the final comprehensive ecological restriction degree was 0.6.

[0152] For "Canal B", the server conducted a series of data processing and calculations and concluded that its ecological limitation level was 0.45.

[0153] During this process, each core indicator was also analyzed and calculated in detail, taking into account factors such as the development intensity of artificial canals, waterway projects, hub projects, water diversion projects, the situation of crossing ecologically sensitive areas, and the impact on the aquatic environment and terrestrial habitat risks.

[0154] For Canal C, the server finally calculated that its ecological restriction degree was 0.52. Similarly, all core indicators were processed and calculated comprehensively and accurately.

[0155] The server obtained the ecological restriction degree of "Canal A" as 0.6, "Canal B" as 0.45, and "Canal C" as 0.52.

[0156] The server then compares the ecological constraints of these multiple pending canals.

[0157] Since the ecological restriction level of "Canal B" of 0.45 is the lowest among the three, the server identifies "Canal B" as the target canal.

[0158] Finally, based on "Canal B", the server determines the canal line selection results.

[0159] This includes clarifying the specific route of the canal, the focus and methods of engineering construction, and specific measures for ecological protection.

[0160] For example, in certain low-sensitivity sections, more conventional construction methods can be used, but attention must be paid to controlling the scale of construction and reducing environmental pollution; in ordinary sensitive sections, in addition to conventional construction control, effective ecological protection and restoration work is also required; in sensitive sections, necessary compensation measures must be implemented for ecologically sensitive areas.

[0161] Through such detailed analysis and comparison, the server can accurately determine the optimal canal route selection results and achieve a balance and coordination between canal construction and ecological protection.

[0162] In order to more clearly describe the solution provided by the embodiment of the present invention, a relatively complete implementation method is provided below.

[0163] 1. Sensitivity classification of canal routes (1) Analysis of canal project development intensity Obtain canal construction information and analyze the engineering contents involved in canal development and construction, including artificial waterways (excavation of mountain sections), waterway engineering (channel dredging, reef blasting, straightening, bank protection construction, etc.), hub engineering (new, modified, and expanded shipping hubs), water diversion engineering (water replenishment reservoirs, water diversion routes), and other supporting projects (reconstruction of obstructive buildings, etc.), and obtain the spatial distribution of engineering development intensity in different sections of the canal.

[0164] (2) Identification and analysis of ecologically sensitive areas The conditions of the sensitive areas that the canal route passes through are an important reference for the canal route selection.

[0165] Collect and analyze relevant data such as regional land space planning, ecological environment zoning control plan, nature conservation area planning, water source protection area planning, and ecological environment status, and use ArcGIS spatial overlay analysis to identify the spatial situation of the canal route crossing ecologically sensitive areas, and obtain the spatial distribution of ecologically sensitive areas in different sections of the canal.

[0166] According to the classification of different sensitive areas, the sensitivity of the canal crossing sensitive areas is divided into 5 levels. The sensitivity level of prohibited sensitive areas is 5, and the sensitivity level of general ecological sensitive targets is 1. Please refer to Table 1. The ecologically sensitive areas referred to in this table are those that cannot be avoided by the canal route.

[0167] Table 1

[0168] (3) Canal route segmentation The river is divided into sections based on the spatial distribution of canal development intensity and the sensitive targets involved in the canal, including: low-sensitivity section, ordinary sensitive section, sensitive section, high-sensitivity section, and extremely sensitive section.

[0169] The river section has no engineering works and does not involve sensitive areas, and is a low-sensitivity section; The river section has no engineering works and involves restricted (generally important) sensitive areas and ordinary sensitive areas; The river section involves waterway engineering and (or) hub engineering and involves restricted (relatively important) sensitive areas and sensitive sections; The river section involves waterway engineering and / or hub engineering and involves restricted (very important) sensitive areas and highly sensitive areas; The river section involves waterway engineering and / or hub engineering and involves restricted (extremely important) sensitive areas and extremely sensitive sections.

[0170] 2. Ecological comparison above highly sensitive areas Different route plans are compared for highly sensitive and extremely sensitive sections of the canal.

[0171] Based on the environmental impact analysis of existing inland waterways and literature research, four levels, including canal development intensity, sensitive areas involved, impact on water habitats, and landscape risks, were selected as criterion layers, and 28 indicator layers were selected to form an environmental sensitivity evaluation index system for canal routes.

[0172] (1) Canal development intensity Based on the canal project settings and existing project research results, the core indicators of canal development intensity are determined. Please refer to Table 2.

[0173] Table 2

[0174] With reference to the development of existing canals and inland waterways at home and abroad, the canal development intensity evaluation standard was determined, the indicator data set was determined, and the Min-Max normalization method was used to standardize the original data. After standardization, the indicator values ​​were all between 0 and 1.

[0175] ; Where: I a is the data after standardization, D max and D min They are indicator data D a The maximum and minimum values ​​of .

[0176] (2) Situations involving sensitive areas ArcGIS spatial overlay analysis was used to identify the specific conditions of sensitive areas in different sections of the canal, as listed in the following table. Please refer to Table 3 for details.

[0177] Table 3

[0178] Based on the total number, type, total number of different functional areas of ecologically sensitive areas involved in the canal line and within 2km of the project, as well as the total length of different functional areas of ecologically sensitive areas parallel to the line, the ratio of different line plans to the total amount is calculated and each indicator is normalized.

[0179] (3) Aquatic habitat The canal's impact on the aquatic ecological environment along the route is mainly concentrated in the canal widening, dredging, excavation construction process, the shipping hub construction process, as well as shipping water diversion, canal navigation and other activities. For the impact on the habitat of aquatic organisms, please refer to Table 4.

[0180] Table 4

[0181] With reference to the development of existing canals and inland waterways at home and abroad, the canal development intensity evaluation standard was determined, the indicator data set was determined, and the Min-Max normalization method was used to standardize the original data. After standardization, the indicator values ​​were all between 0 and 1.

[0182] (4) Terrestrial habitat blocks Since the canal construction may cause ecological risks on land due to the impact on terrestrial ecological integrity and connectivity, biodiversity of ecosystems, and species habitats, the ecological risk assessment model based on the landscape pattern index of land use change can be used to evaluate the regional ecosystem risks.

[0183] The study area was divided into several grids, and the landscape pattern index and ecological risk level of each grid were calculated.

[0184] Specifically, highly sensitive sections of the canal were selected and gridded with a 2-km boundary length, dividing the entire study area into 580 sampling grids.

[0185] The degree of ecological risk is expressed as a function of landscape disturbance and landscape vulnerability at the landscape level for different landscape types.

[0186] For grid i, the calculation method of its ecological risk level Ri is: Ri=Ei×Vi.

[0187] Ei is the landscape disturbance index of the i-th grid, and Vi is the landscape vulnerability index of the i-th grid.

[0188] Among them, the weights a, b, and c are set to 0.5, 0.3, and 0.2, respectively, Cni is the normalized index of landscape fragmentation, Sni is the normalized index of landscape separation, and Dni is the normalized index of landscape dominance. If the landscape fragmentation index Ci of grid i is ranked in the kth place of all grid landscape fragmentation indexes, then the normalized index of landscape fragmentation Cni of grid i = k / m; the landscape separation index Si of grid i is ranked in the lth place of all grid landscape separation indexes, then the normalized index of landscape separation Sni = l / m; the landscape dominance index Di of grid i is ranked in the sth place of all grid landscape dominance indexes, then the normalized index of landscape dominance Dni = s / m, where m is the total number of grids.

[0189] The landscape vulnerability index is the internal cause of regional ecological risk and can reflect the vulnerability of each landscape type ecosystem when it is disturbed by the outside world. For grid i, the calculation method of its landscape vulnerability index Vi is as follows: ; Among them, V j represents the landscape vulnerability coefficient of the jth landscape type, P ij is the landscape area index of the jth landscape type in the ith grid.

[0190] P ij =A ij / A i Among them, A ij is the total area of ​​the jth landscape type in the ith grid, A i is the sum of the areas of all landscape types in the i-th grid.

[0191] The above parameters were used to calculate the dominance values ​​of various patches within the scope of the canal implementation. The dominant landscape types after the canal construction were water areas, cultivated land, and woodlands.

[0192] The ecological risk value Ri of each sample plot during the study period was calculated, and the degree of ecological risk was normalized into different levels: low risk, lower risk, medium risk, higher risk, and high risk.

[0193] Based on the clustering of ecological risk index, the areas with different risk levels are determined, as well as the degree of change before and after the canal construction. Please refer to Table 5.

[0194] Table 5

[0195] (5) Different line selection models The canal development intensity is defined as S, the ecologically sensitive area is defined as O, the water habitat is defined as W, the terrestrial habitat risk is defined as R, and the ecological restriction degree is defined as DEL. The generalized calculation formula is as follows: DEL=n 1 S+n 2 O+n 3 W+n 4 R Choose n according to the importance of different factors 1 :n 2 :n 3 :n 4 =3:4:2:1 When the canal section is an artificial canal (dry land excavation), the value of W is 0.

[0196] The analytic hierarchy process is used to calculate the weight of each indicator. The indicators at the same level are compared pairwise using the 1-9 scaling method. An evaluation matrix is ​​established to determine the indicator weights of each factor layer and indicator layer. Based on this, the final weights of the 28 indicators can be obtained. The final indicator weight is equivalent to the product of the weight of the indicator layer to the criterion layer and the weight of the criterion layer relative to the target layer.

[0197] The DEL values ​​of different alternative routes are calculated according to the generalized calculation formula. The larger the value, the higher the degree of restriction. The route with the lowest degree of restriction is selected as the recommended route based on the ranking.

[0198] III. Formulation of environmental protection measures for different sensitive areas For low-sensitivity sections, considering the disturbance of the ecological environment by the construction team, the environmental impact can be reduced by adopting environmentally friendly construction technology, controlling the construction scale, and prohibiting construction ships from discharging water pollutants; For ordinary sensitive areas, in addition to the above requirements, effective ecological protection and restoration measures should be implemented; For sensitive areas, in addition to the above requirements, necessary compensation measures should be implemented for ecologically sensitive areas; For highly sensitive sections, the first thing to consider is whether the line engineering plan should avoid ecologically sensitive areas. For sections that cannot be avoided, necessary special studies should be carried out, and targeted ecological restoration and protection measures for sensitive areas should be proposed. For extremely sensitive sections, first consider avoiding the route and construction, carry out necessary special studies for sections that cannot be avoided, and carry out ecological compensation and restoration measures for major sections. In addition to meeting environmental protection requirements during the construction period, navigation control, environmental risk prevention and noise control should be carried out after the project is implemented, and the discharge of ship water pollutants should be prohibited.

[0199] In summary, based on the characteristics of existing canal engineering construction, the ecological and environmental sensitive areas involved in the canal route, and the landscape damage that may be caused by canal development, the present invention proposes an artificial canal ecological route selection method, which provides a scientific basis for my country's active construction of a modern comprehensive three-dimensional transportation system and the promotion of special research decisions and practices such as the Hunan-Guangxi and Jiangxi-Guangdong canals.

[0200] Please refer to Figure 2 , Figure 2 An embodiment of the present invention provides a canal line selection device 110 based on ecological factors, including: The acquisition device 1101 is used to acquire the canal construction information and canal route information of the canal to be determined, and determine the canal development intensity and the level of the canal-related ecological sensitive area according to the canal construction information and the canal route information; segment the canal to be determined according to the canal development intensity and the level of the canal-related ecological sensitive area to obtain a plurality of sections; wherein the sections include a first section and a second section, and the sensitivity of the first section is higher than that of the second section; for the first section, obtain the core index of canal development intensity, the core index of the canal-related ecological sensitive area, the core index of aquatic habitat environment, and the core index of terrestrial habitat risk; calculate the degree of ecological restriction of the canal to be determined according to the core index of canal development intensity, the core index of the canal-related ecological sensitive area, the core index of aquatic habitat environment, and the core index of terrestrial habitat risk; The line selection device 1102 is used to determine the canal line selection result of the pending canal according to the ecological restriction degree.

[0201] It should be noted that the implementation principle of the aforementioned canal route selection device 110 based on ecological factors can refer to the implementation principle of the aforementioned canal route selection method based on ecological factors, and will not be repeated here.

[0202] It should be understood that the division of the various modules of the above device is only a division of logical functions, and in actual implementation, they can be fully or partially integrated into one physical entity, or they can be physically separated.

[0203] And these modules can all be implemented in the form of software calling through processing elements; or all be implemented in the form of hardware; or some modules can be implemented in the form of software calling through processing elements, and some modules can be implemented in the form of hardware.

[0204] For example, the canal line selection device 110 based on ecological factors can be a separately established processing element, or it can be integrated in a chip of the above-mentioned device. In addition, it can also be stored in the memory of the above-mentioned device in the form of program code, and called and executed by a processing element of the above-mentioned device. The functions of the canal line selection device 110 based on ecological factors.

[0205] The implementation of other modules is similar.

[0206] In addition, all or part of these modules can be integrated together or implemented independently.

[0207] The processing element described herein may be an integrated circuit having signal processing capabilities.

[0208] In the implementation process, each step of the above method or each module above can be completed by an integrated logic circuit of hardware in a processor element or an instruction in software form.

[0209] For example, the above modules may be one or more integrated circuits configured to implement the above methods, such as: one or more application specific integrated circuits (ASICs), or, one or more microprocessors (digital signal processors, DSPs), or, one or more field programmable gate arrays (FPGAs), etc.

[0210] For another example, when a certain module above is implemented in the form of a processing element scheduling a program code, the processing element may be a general-purpose processor, such as a central processing unit (CPU) or other processors that can call program codes.

[0211] For another example, these modules can be integrated together and implemented in the form of a system-on-a-chip (SOC).

[0212] An embodiment of the present invention provides a computer device 100, which includes a processor and a non-volatile memory storing computer instructions. When the computer instructions are executed by the processor, the computer device 100 executes the aforementioned canal line selection device 110 based on ecological factors.

[0213] like Figure 3 As shown, Figure 3 The computer device 100 provided in the embodiment of the present invention is a structural block diagram. The computer device 100 includes a canal line selection device 110 based on ecological factors, a memory 111, a processor 112 and a communication unit 113.

[0214] To achieve data transmission or interaction, the memory 111 , the processor 112 , and the communication unit 113 are electrically connected to each other directly or indirectly.

[0215] For example, these components may be electrically connected to each other via one or more communication buses or signal lines.

[0216] The canal route selection device 110 based on ecological factors includes at least one software function module that can be stored in the memory 111 in the form of software or firmware or fixed in the operating system (OS) of the computer device 100.

[0217] The processor 112 is used to execute the canal line selection device 110 based on ecological factors stored in the memory 111, such as the software function modules and computer programs included in the canal line selection device 110 based on ecological factors.

[0218] An embodiment of the present invention provides a readable storage medium, which includes a computer program. When the computer program is running, it controls the computer device where the readable storage medium is located to execute the aforementioned canal line selection device 110 based on ecological factors.

[0219] The foregoing description, for purposes of illustration, has been presented with reference to specific embodiments.

[0220] However, the illustrative discussions above are not intended to be exhaustive or to limit the disclosure to the precise forms disclosed.

[0221] Numerous modifications and variations are possible in light of the above teaching.

[0222] The embodiments were chosen and described in order to best explain the principles of the disclosure and its practical application, to thereby enable others skilled in the art to best utilize the disclosure and utilize various embodiments with various modifications as are suited to the particular use contemplated.

Claims

1. A canal route selection method based on ecological factors, characterized in that: include: Obtaining canal construction information and canal route information of the canal to be determined, and determining the canal development intensity and the level of the ecologically sensitive area involved in the canal according to the canal construction information and the canal route information; According to the canal development intensity and the level of ecologically sensitive areas involved in the canal, the canal to be determined is segmented to obtain a plurality of segments; wherein the segments include a first segment and a second segment, and the sensitivity of the first segment is higher than that of the second segment; For the first section, obtain the core indicators of canal development intensity, core indicators of ecologically sensitive areas involved in the canal, core indicators of aquatic habitats, and core indicators of terrestrial habitat risks; The degree of ecological restriction of the canal to be determined is calculated based on the core indicators of the canal development intensity, the core indicators of the ecologically sensitive areas involved in the canal, the core indicators of the aquatic habitat environment and the core indicators of the terrestrial habitat risk; The canal route selection result of the pending canal is determined according to the degree of ecological restriction.

2. The method according to claim 1, characterized in that The obtaining of canal construction information and canal route information of the canal to be determined, and determining the canal development intensity and the level of ecologically sensitive areas involved in the canal according to the canal construction information and the canal route information, respectively, includes: Acquiring the canal construction information including artificial waterways, waterway projects, hub projects, water diversion projects and supporting projects; According to the artificial waterway, the waterway project, the hub project, the water diversion project and the supporting project, the spatial distribution of the engineering development intensity of different sections of the canal to be determined is obtained, and the spatial distribution of the engineering development intensity of different sections of the canal to be determined is used as the canal development intensity; ArcGIS spatial overlay analysis was used to obtain the canal route information, including the canal crossing ecologically sensitive spaces; The levels of ecologically sensitive areas involved in different sections of the canal to be determined are determined based on the sensitivity corresponding to the situation of the canal crossing the ecologically sensitive space; wherein, the levels of ecologically sensitive areas involved in the canal include prohibited category, extremely important restricted category, very important restricted category, relatively important restricted category and generally important restricted category, and the sensitivity of the prohibited category, the extremely important restricted category, the very important restricted category, the relatively important restricted category and the generally important restricted category decreases step by step.

3. The method according to claim 2, characterized in that According to the canal development intensity and the level of ecologically sensitive areas involved in the canal, the canal to be determined is segmented into multiple sections, including: According to the canal development intensity and the level of ecological sensitive areas involved in the canal, the canal to be determined is segmented into low-sensitivity sections, ordinary sensitive sections, sensitive sections, high-sensitivity sections and extremely sensitive sections; wherein the sensitivity of the low-sensitivity sections, ordinary sensitive sections, sensitive sections, high-sensitivity sections and extremely sensitive areas increases step by step, the low-sensitivity sections are sections of the river without engineering and not involving sensitive areas, the ordinary sensitive sections are sections of the river without engineering and involving generally important restricted sensitive areas, the sensitive sections are sections of the river involving waterway engineering and / or hub engineering and involving relatively important restricted sensitive areas, the highly sensitive areas are sections of the river involving waterway engineering and / or hub engineering and involving very important restricted sensitive areas, and the extremely sensitive sections are sections of the river involving waterway engineering and / or hub engineering and involving extremely important restricted sensitive areas; The high sensitivity section and the extremely sensitive section are classified as the first section, and the low sensitivity section, the normal sensitivity section, and the sensitive section are classified as the second section.

4. The method according to claim 1, characterized in that For the first section, the core indicators of canal development intensity, core indicators of ecologically sensitive areas involved in the canal, core indicators of aquatic habitats, and core indicators of terrestrial habitat risks are obtained, including: For the first section, the ratio of the natural river to the total length of the canal route and the excavation length of the mountain-crossing section included in the artificial canal, the dredging volume per unit channel mileage, the reef blasting volume per unit channel mileage, the river channel straightening rate, the artificial bank protection construction rate and the total length of the widened river section included in the waterway engineering, the number of hubs per unit canal navigable mileage included in the hub engineering, the length of the water diversion project route included in the water diversion project and the ecological flow guarantee rate of the rivers along the canal are obtained as the core indicators of the canal development intensity; Obtain the impact of sensitive areas, including the number of crossing sensitive areas, the type of crossing sensitive areas, the number of different functional areas of crossing sensitive areas, the number of crossing core areas of sensitive areas, the total length of crossing sensitive areas, and the total length of crossing core areas of sensitive areas as the core indicators of ecologically sensitive areas involved in the canal; The core indicators of the aquatic habitat environment include the longitudinal connectivity index of the river, the ratio of the canal curvature to the original river curvature, the change in water oxygen content before and after the canal was built, and the reduction rate of water quality indicators in the river section before and after the bend was cut. The core indicators of the aquatic habitat environment include the biological loss caused by underwater construction, the aquatic species diversity index, and the change rate of migratory fish populations. The types of land risk changes before and after the canal construction are obtained, including changes in the number of risk types, changes in the number of low-risk type patches, and changes in the number of high-risk type patches. The changes in land risk area before and after the canal construction include changes in the area of ​​low-risk type patches and changes in the area of ​​high-risk type patches as the core indicators of the land habitat risk.

5. The method according to claim 4, characterized in that The method further comprises: Acquire a preset research range corresponding to the first section; Dividing the preset research range into a plurality of grids; The ecological risk level of each grid is calculated using the formula: Ri=Ei×Vi; where Ri is the ecological risk level of the i-th grid, Ei is the landscape disturbance index of the i-th grid, and Vi is the landscape vulnerability index of the i-th grid; According to the ecological risk degree corresponding to each grid, the risk type of each corresponding section and the patch information of the corresponding risk type before and after the canal construction are determined; the risk types include low risk, lower risk, medium risk, higher risk and high risk, and the patch information before and after the canal construction includes patch quantity change information and patch area change information.

6. The method according to claim 1, characterized in that The ecological restriction degree of the canal to be determined is calculated based on the core indicators of the canal development intensity, the core indicators of the ecologically sensitive areas involved in the canal, the core indicators of the aquatic habitat environment and the core indicators of the terrestrial habitat risk, including: The core index of the canal development intensity, the core index of the canal-related ecological sensitive area, the core index of the aquatic habitat environment, and the core index of the terrestrial habitat risk are normalized to obtain the core index value of the canal development intensity, the core index value of the canal-related ecological sensitive area, the core index value of the aquatic habitat environment, and the core index value of the terrestrial habitat risk; According to the normalized core index value of the canal development intensity, the core index value of the ecologically sensitive area involved in the canal, the core index value of the aquatic biological habitat and the core index value of the terrestrial habitat risk, the ecological restriction degree of the undetermined canal is calculated by the formula: DEL=n1S+n2O+n3W+n4R; wherein DEL is the ecological restriction degree of the undetermined canal, S is the core index value of the canal development intensity, O is the core index value of the ecologically sensitive area involved in the canal, W is the core index value of the aquatic biological habitat, R is the core index value of the terrestrial habitat risk, and n1, n2, n3, and n4 are all weight coefficients.

7. The method according to claim 1, characterized in that The canal line selection result of the pending canal is determined according to the ecological restriction degree, including: Obtaining the ecological restriction degree corresponding to each of the plurality of pending canals; determining the canal with the lowest ecological restriction among the plurality of canals to be determined as the target canal; The canal line selection result is determined based on the target canal.

8. A canal line selection device based on ecological factors, characterized in that: include: An acquisition device, used to acquire canal construction information and canal route information of the canal to be determined, and to determine the canal development intensity and the level of the ecologically sensitive area involved in the canal according to the canal construction information and the canal route information; According to the intensity of canal development and the level of ecologically sensitive areas involved in the canal, the canal to be determined is segmented to obtain a plurality of sections; wherein the sections include a first section and a second section, and the sensitivity of the first section is higher than that of the second section; for the first section, the core indicators of canal development intensity, the core indicators of ecologically sensitive areas involved in the canal, the core indicators of aquatic habitats, and the core indicators of terrestrial habitat risks are obtained; according to the core indicators of canal development intensity, the core indicators of ecologically sensitive areas involved in the canal, the core indicators of aquatic habitats, and the core indicators of terrestrial habitat risks, the degree of ecological restriction of the canal to be determined is calculated; A line selection device is used to determine the canal line selection result of the pending canal according to the ecological restriction degree.

9. A computer device, characterized in that: The computer device comprises a processor and a non-volatile memory storing computer instructions. When the computer instructions are executed by the processor, the computer device executes the method according to any one of claims 1 to 7.

10. A readable storage medium, characterized in that: The readable storage medium includes a computer program, and when the computer program is executed, the computer device where the readable storage medium is located is controlled to execute the method according to any one of claims 1 to 7.

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