Method for evaluating health condition development trend of sand blocking and fixing belt protection system and related device

Abstract

The invention discloses a sand blocking and fixing belt protection system health condition development trend evaluation method and a related device, and relates to the technical field of ecological protection system maintaining.The method comprises the steps that according to current health condition evaluation indexes and health condition driving factor evaluation indexes, the weight of each evaluation index is determined through an analytic hierarchy process; then, determining the score of each evaluation index through field investigation, and determining a current health condition score and a health condition driving factor score according to the score and the weight of each evaluation index; and finally, according to the current health condition score, the health condition driving factor score and respective weights, determining a health condition development trend score. According to the method, the health condition development trend of the sand blocking and fixing belt protection system and main problems and risks faced in development can be accurately revealed, researchers can research targeted optimization strategies according to development trend scores, and a scientific basis is provided for related management departments in the aspects of sand prevention and control, resource allocation and policy adjustment.

Description

Technical Field

[0001] The present application relates to the technical field of ecological protection system maintenance, and in particular to a method for evaluating the development trend of the health status of a sand-fixing belt protection system and related devices. Background Art

[0002] Oasis, as an artificially constructed ecosystem on the background matrix of desert, has a front ecological barrier, the sand-fixing belt, which is a comprehensive wind-proof and sand-fixing system composed of a series of protective measures, such as shelterbelts, sand barriers and enclosures. As a critical ecological buffer zone between oasis and desert ecosystems, the sand-fixing belt exhibits significant wind-sand transport phenomena and the edge effect of ecological factors.

[0003] In practical applications, systematically evaluating the health status of the sand-blocking and sand-fixing belt protection system and timely discovering and solving potential problems are the core elements to ensure the sustainable development of the protection system. However, most current studies focus on evaluating the health status of deserts, oases, and desert-oasis transition zones, but there are relatively few studies on the sand-blocking and sand-fixing belts at the forefront of oases. Therefore, the present invention proposes a method for evaluating the development trend of the health status of the sand-blocking and sand-fixing belt protection system and related devices, aiming to comprehensively and systematically evaluate the health status of the sand-blocking and sand-fixing belt protection system and predict its development trend, thereby providing a theoretical basis for formulating scientific and reasonable maintenance and management strategies. Summary of the invention

[0004] The purpose of this application is to provide a method and related device for evaluating the health status development trend of the sand-blocking and sand-fixing belt protection system, which can comprehensively and systematically evaluate the health status development trend of the sand-blocking and sand-fixing belt protection system and provide a theoretical basis for formulating scientific and reasonable maintenance and management strategies.

[0005] To achieve the above objectives, this application provides the following solutions:

[0006] In a first aspect, the present application provides a method for evaluating the development trend of the health status of a sand-fixing belt protection system, comprising the following steps:

[0007] Based on the field investigation of the sand-fixing belt protection system and the evaluation of research data, several current health status evaluation indicators and several health status driving factor evaluation indicators are determined.

[0008] The analytic hierarchy process is used to determine the weights of each current health status evaluation index and the weights of each health status driving factor evaluation index.

[0009] Based on the field investigation of the sand-fixing belt protection system, the scores of each current health status evaluation indicator and the scores of each health status driving factor evaluation indicator are determined.

[0010] The current health status score is determined based on the scores of each current health status evaluation indicator and the corresponding weights of the current health status evaluation indicators.

[0011] The health status driver score is determined based on the score of each health status driver evaluation indicator and the corresponding health status driver evaluation indicator weight.

[0012] Determine the health status trend score based on the current health status score, health status driver scores and their respective weights.

[0013] Optionally, the current health status evaluation indicators include: several protection system integrity evaluation indicators, several closed-off area natural vegetation evaluation indicators, several artificial forest evaluation indicators and several mechanical sand barrier evaluation indicators; the health status driving factor evaluation indicators include: several climate factor evaluation indicators, several terrain factor evaluation indicators, several hydrological factor evaluation indicators, several soil factor evaluation indicators, several natural disaster factor evaluation indicators and several management factor evaluation indicators.

[0014] Optionally, determining the current health status score according to the scores of each current health status evaluation indicator and the corresponding weights of the current health status evaluation indicators specifically includes the following steps:

[0015] The protection system integrity score is determined based on the scores of each protection system integrity evaluation indicator and the corresponding weight of the protection system integrity evaluation indicator.

[0016] The natural vegetation score of the closed-off area is determined based on the scores of the natural vegetation evaluation indicators of each closed-off area and the corresponding weights of the natural vegetation evaluation indicators of the closed-off area.

[0017] The plantation forest score is determined based on the scores of each plantation forest evaluation indicator and the corresponding weight of the plantation forest evaluation indicator.

[0018] The mechanical sand barrier score is determined based on the scores of each mechanical sand barrier evaluation indicator and the corresponding weight of the mechanical sand barrier evaluation indicator.

[0019] The current health status score is determined based on the protection system integrity score, the closed-off area natural vegetation score, the artificial forest score, the mechanical sand barrier score and their respective weights.

[0020] Optionally, determining the health status driver score according to the score of each health status driver evaluation indicator and the weight of the corresponding health status driver evaluation indicator includes the following steps:

[0021] The climate factor score is determined based on the score of each climate factor evaluation indicator and the corresponding climate factor evaluation indicator weight.

[0022] The terrain factor score is determined based on the score of each terrain factor evaluation index and the corresponding terrain factor evaluation index weight.

[0023] The hydrological factor score is determined based on the score of each hydrological factor evaluation indicator and the corresponding weight of the hydrological factor evaluation indicator.

[0024] The soil factor score is determined based on the score of each soil factor evaluation index and the corresponding weight of the soil factor evaluation index.

[0025] The natural disaster factor score is determined based on the score of each natural disaster factor evaluation indicator and the corresponding weight of the natural disaster factor evaluation indicator.

[0026] The management factor score is determined based on the score of each management factor evaluation indicator and the weight of the corresponding management factor evaluation indicator.

[0027] The health status driver score is determined based on the climate factor score, terrain factor score, hydrological factor score, soil factor score, natural disaster factor score, management factor score and their respective weights.

[0028] Optionally, the evaluation indicators for the integrity of the protection system include: the width and lateral continuity of the sand-fixing belt; the evaluation indicators for natural vegetation in the closed-off area include: enclosure measures, coverage, species richness, Simpson evenness index and number of layers; the evaluation indicators for artificial forests include: the presence or absence of artificial forests, tree species selection, tree species composition, stand density, development stage, degree of deadtops, degree of root exposure and natural regeneration ability of plants; the evaluation indicators for mechanical sand barriers include: the presence or absence of sand barriers, sand barrier action mode and barrier integrity rate; the evaluation indicators for climatic factors include: average annual precipitation, annual dryness and annual sandstorm speed; the evaluation indicators for terrain factors include: whether a narrow channel effect occurs; the evaluation indicators for hydrological factors include: groundwater level and whether there is side seepage water recharge from farmland; the evaluation indicators for soil factors include: average moisture content of shallow soil and surface fluidity; the evaluation indicators for natural disaster factors include: rodent damage, pests and diseases and climatic disasters; the evaluation indicators for management factors include: cultivation and protection of unforested areas, whether the forest chief system is implemented and the publicity of ecological construction policies.

[0029] Optionally, the method for evaluating the development trend of the health status of the sand-fixing belt protection system further includes the following steps:

[0030] Based on the health status development trend score and the development trend score threshold, the health status development trend of the sand-fixing belt protection system is determined, and the scores of each current health status evaluation indicator and each health status driving factor evaluation indicator are displayed in a visual way.

[0031] In the second aspect, the present application provides a system for evaluating the development trend of the health status of a sand-blocking and sand-fixing belt protection system, which is used to implement the above-mentioned method for evaluating the development trend of the health status of a sand-blocking and sand-fixing belt protection system. The system includes the following modules:

[0032] The evaluation index screening and determination module is used to determine several current health status evaluation indicators and several health status driving factor evaluation indicators based on the field investigation of the sand-fixing belt protection system and the evaluation of research data.

[0033] The evaluation index weight determination module is used to determine the weight of each current health status evaluation index and the weight of each health status driving factor evaluation index by using the hierarchical analysis method.

[0034] The evaluation index score determination module is used to determine the scores of various current health status evaluation indicators and the scores of various health status driving factor evaluation indicators based on the field investigation of the sand blocking and fixing belt protection system.

[0035] The current health status score determination module is used to determine the current health status score according to the scores of each current health status evaluation indicator and the corresponding weights of the current health status evaluation indicators.

[0036] The health status driver score determination module is used to determine the health status driver score according to the score of each health status driver evaluation indicator and the weight of the corresponding health status driver evaluation indicator.

[0037] The health status development trend score determination module is used to determine the health status development trend score based on the current health status score, the health status driving factor score and their respective weights.

[0038] In the third aspect, the present application provides a computer device, including: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the steps of the method for evaluating the development trend of the health status of a sand-fixing belt protection system as described above.

[0039] In a fourth aspect, the present application provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the method for evaluating the development trend of the health status of a sand-fixing belt protection system as described above.

[0040] In a fifth aspect, the present application provides a computer program product, including a computer program, which, when executed by a processor, implements the steps of the method for evaluating the development trend of the health status of the sand-fixing belt protection system as described above.

[0041] According to the specific embodiments provided in this application, this application discloses the following technical effects:

[0042] The present application provides a method for evaluating the development trend of the health status of a sand-blocking and sand-fixing belt protection system and a related device. In the method, for the determined current health status evaluation indicators and health status driving factor evaluation indicators, a hierarchical analysis method is used to determine the weight of each evaluation indicator, aiming to comprehensively and accurately reflect the health status of the sand-blocking and sand-fixing belt protection system; then, based on field investigations, the scores of each evaluation indicator are determined, and the current health status score is determined based on the scores and weights of each current health status evaluation indicator, and the health status driving factor score is determined based on the scores and weights of each health status driving factor evaluation indicator; finally, based on the current health status score, the health status driving factor score and their respective weights, a health status development trend score is determined, which can accurately reveal the health status development trend of the sand-blocking and sand-fixing belt protection system and the main problems and risks faced in its development, and can provide researchers with targeted optimization strategies based on the development trend scores, and provide a scientific basis for relevant management departments in sand prevention and control, resource allocation and policy adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0044] Figure 1 A flow chart of a method for evaluating the health status development trend of a sand-fixing belt protection system provided in one embodiment of the present application.

[0045] Figure 2 A schematic diagram of a system for evaluating the health status development trend of a sand-blocking and sand-fixing belt in a method for evaluating the health status development trend of a sand-blocking and sand-fixing belt protection system provided in one embodiment of the present application.

[0046] Figure 3 A detailed flow chart of step S4 in a method for evaluating the health status development trend of a sand-fixing belt protection system provided in one embodiment of the present application.

[0047] Figure 4 A detailed flow chart of step S5 in a method for evaluating the health status development trend of a sand-fixing belt protection system provided in one embodiment of the present application.

[0048] Figure 5 A schematic diagram of the functional modules of a system for evaluating the health status development trend of a sand-fixing belt protection system provided in one embodiment of the present application.

[0049] Figure 6A schematic diagram of the structure of a computer device provided in one embodiment of the present application. DETAILED DESCRIPTION

[0050] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0051] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the present application is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0052] In an exemplary embodiment, the present application provides a method for evaluating the development trend of the health status of a sand-fixing belt protection system. The method is executed by a computer device, and can be executed by a computer device such as a terminal or a server alone, or by a terminal and a server together. Figure 1 As shown, the method comprises the following steps:

[0053] S1. According to the field investigation of the sand-blocking and sand-fixing belt protection system and the evaluation of research data, several current health status evaluation indicators and several health status driving factor evaluation indicators are determined. Specifically in this embodiment, the various indicators that affect the development trend of the health status of the sand-blocking and sand-fixing belt are preliminarily determined through field investigation in the early stage. In order to ensure the scientificity, objectivity and professionalism of the evaluation indicators, relevant experts in the industry can be invited to review and evaluate the selected evaluation indicators to obtain the final evaluation system for the development trend of the health status of the sand-blocking and sand-fixing belt, such as Figure 2 As shown in the figure, the development trend A of the health status of the sand-fixing belt protection system depends on two aspects: the current health status scoring index B1 and the health status driving factor scoring index B2. These two first-level indicators each include several second-level indicators C1~C10, and each second-level indicator can be further divided into several third-level indicators D1~D32.

[0054] In this embodiment, the current health status evaluation index B1 includes: several protection system integrity evaluation indicators, several closed-off area natural vegetation evaluation indicators, several artificial forest evaluation indicators and several mechanical sand barrier evaluation indicators; each protection system integrity evaluation indicator is used to determine the protection system integrity score C1, each closed-off area natural vegetation evaluation indicator is used to determine the closed-off area natural vegetation score C2, each artificial forest evaluation indicator is used to determine the artificial forest score C3, and each mechanical sand barrier evaluation indicator is used to determine the mechanical sand barrier score C4.

[0055] The specific evaluation indicators of the protection system's integrity include: the width of the sand-fixing belt D1 and the lateral continuity D2; the specific evaluation indicators of natural vegetation in the closed-off area include: enclosure measures D3, coverage D4, species richness D5, Simpson evenness index D6 and number of layers D7; the specific evaluation indicators of artificial forests include: the presence or absence of artificial forests D8, tree species selection D9, tree species composition D10, stand density D11, development stage D12, degree of dead branches D13, degree of root exposure D14 and natural regeneration ability of plants D15; the specific evaluation indicators of mechanical sand barriers include: the presence or absence of sand barriers D16, sand barrier action mode D17 and barrier integrity rate D18.

[0056] The health status driving factor evaluation index B2 includes: several climate factor evaluation indexes, several terrain factor evaluation indexes, several hydrological factor evaluation indexes, several soil factor evaluation indexes, several natural disaster factor evaluation indexes and several management factor evaluation indexes. Each climate factor evaluation index is used to determine the climate factor score C5, each terrain factor evaluation index is used to determine the terrain factor score C6, each hydrological factor evaluation index is used to determine the hydrological factor score C7, each soil factor evaluation index is used to determine the soil factor score C8, each natural disaster factor evaluation index is used to determine the natural disaster factor score C9, and each management factor evaluation index is used to determine the management factor score C10.

[0057] The specific evaluation indicators of climate factors include: average annual precipitation D19, annual dryness D20 and annual sandstorm speed D21; the specific evaluation indicators of terrain factors include: whether the narrow channel effect occurs D22; the specific evaluation indicators of hydrological factors include: groundwater level D23 and whether there is lateral seepage water supply from farmland D24; the specific evaluation indicators of soil factors include: average moisture content of shallow soil D25 and surface fluidity D26; the specific evaluation indicators of natural disaster factors include: rodent damage D27, pests and diseases D28 and climate disasters D29; the specific evaluation indicators of management factors include: cultivation and protection of unforested areas D30, whether the forest chief system is implemented D31 and publicity of ecological construction policies D32.

[0058] S2. Use the analytic hierarchy process to determine the weights of each current health status evaluation index and the weights of each health status driving factor evaluation index. The analytic hierarchy process is a mathematical tool that combines qualitative and quantitative analysis based on expert experience. It can decompose complex decision-making problems into multiple levels as a system, such as Figure 2The indicators at all levels shown in the table are divided into the first level, the current health status scoring indicator B1 and the health status driving factor scoring indicator B2, the second level evaluation indicators C1~C10 are the second level, and the third level evaluation indicators D1~D32 are the more detailed third level. Through expert scoring, the matrix judgment and consistency test of each level are carried out, and the weight of each level to the overall goal is calculated by mathematical methods. According to the evaluation indicator system of the health status development trend of the sand blocking and sand fixing belt, a scoring matrix is ​​constructed. 20 relevant experts are invited to compare the importance of each level indicator relative to the upper level indicator according to their experience, and then score according to the importance level and scoring criteria shown in Table 1.

[0059] Table 1 Importance level and scoring criteria

[0060] Scale meaning 1 Indicates that two elements have the same importance. 3 Indicates that compared with two elements, the former is slightly more important than the latter 5 Indicates that compared with two elements, the former is obviously more important than the latter 7 Indicates that compared with two elements, the former is extremely important than the latter 9 Indicates that compared with two elements, the former is more important than the latter 2,4,6,8 Indicates the middle value of the above adjacent judgments Count down from 1 to 9 Indicates the importance of comparing the corresponding two factors in the order of swapping

[0061] The scores were processed, and the judgment matrix was subjected to a hierarchical single-rank consistency test and a hierarchical total-rank consistency test to determine whether the interrelationships between the indicators could be quantitatively transferred. The total ranking calculation results of the evaluation indicators at each level in the evaluation system for the development trend of the health status of the sand-fixing belt are shown in Tables 2, 3, and 4. Table 2 shows the weights of each secondary indicator and each tertiary indicator under the current health status scoring indicator B1, Table 3 shows the weights of each secondary indicator and each tertiary indicator under the health status driving factor scoring indicator B2, and Table 4 shows the weights of the current health status scoring indicator B1 and the health status driving factor scoring indicator B2 in the health status development trend score.

[0062] Table 2 Weights of various indicators under the current health status score indicator B1

[0063]

[0064]

[0065] Table 3 Weights of indicators at all levels under health status driver scoring indicator B2

[0066]

[0067]

[0068] Table 4 Weights of the two primary indicators under the health status development trend score A

[0069]

[0070] S3. Based on the field investigation of the sand-fixing belt protection system, determine the scores of each current health status evaluation indicator and the scores of each health status driving factor evaluation indicator.

[0071] Determine the score of the width D1 of the sand - blocking and sand - fixing belt: The sand - blocking and sand - fixing measures include three types: constructing artificial forests, laying mechanical sand barriers, and enclosure protection. Since there is no clear upper boundary for the enclosure protection belt, the width of the sand - blocking and sand - fixing belt only counts the span of "artificial forest + mechanical sand barrier" in the protection direction, denoted as W. When it is determined through investigation that W > 1000m, the score is 1; when 1000 ≥ W > 500m, the score is 0.8; when 500 ≥ W > 300m, the score is 0.6; when W ≤ 300m, the score is 0.4.

[0072] Determine the score of the lateral continuity D2: The lateral direction refers to the direction consistent with the edge of the oasis. It is difficult to form a group effect at both ends of the protection system, with poor stability, weak resistance, and being vulnerable to external interference. The continuity can be indirectly reflected by the lateral continuous length, denoted by the symbol L. When L > 600m, the score is 1; when 600 ≥ L > 300m, the score is 0.5; when L ≤ 300m, the score is 0.2.

[0073] Determine the score of the enclosure measure D3: If there is no enclosure measure, the score is 0; if there is only enclosure, the score is 0.6; if there is enclosure and video monitoring is installed, the score is 1.

[0074] Determine the score of the coverage D4: Select a 20m * 20m quadrat. When the vegetation coverage C > 10%, the score is 1; when 10% ≥ C > 5%, the score is 0.6; when C ≤ 5%, the score is 0.3.

[0075] Determine the score of the species richness D5: Select a 20m * 20m quadrat. When the species richness S ≥ 10, the score is 1; when 10 > S ≥ 5, the score is 0.5; when S < 5, the score is 0.2.

[0076] Determine the score of the Simpson evenness index D6: Calculate the Simpson evenness index D according to the following formula, which is used to measure the closeness of different species in terms of quantity. When 0 < D ≤ 0.25, the score is 1; when 0.25 < D ≤ 0.5, the score is 0.75; when 0.5 < D ≤ 0.75, the score is 0.5; when 0.75 < D ≤ 1, the score is 0.25.

[0077] D = 1 - Σ(pi^2).

[0078] Where pi represents the individual proportion of the i - th species in the community, and Σ represents the summation over all species in the community.

[0079] Determine the score of the layer number D7: The more the number of layers, the higher the species diversity and the more stable the structure of the community. When there are three or more layers (grass, small shrubs, large shrubs, trees), the score is 1; when there are two layers (grass, small shrubs), the score is 0.5; when there is one layer (herbaceous layer), the score is 0.1.

[0080] Determine the score of D8 for the presence or absence of artificial forests: when there are artificial forests planted in the sand-fixing belt, the score is 1; when there are no artificial forests, the score is 0; when the score is 0, the scores of D9 to D15 are all 0.

[0081] Determine the score of tree species selection D9: In the special site conditions and windy sand environment of the sand-fixing belt, native tree species may not be suitable for sand-fixing. Only successful afforestation tree species proven in practice meet the principle of suitable trees for suitable places. The score of successful afforestation tree species proven in practice is 1; the score of native tree species (risky) is 0.5; the score of introduced species (high risk) is 0.

[0082] Determine the score of tree species composition D10: when the tree species composition in the sand-fixing belt is a mixed forest, the score is 1; when it is a pure forest, the score is 0.6.

[0083] Determine the score of stand density D11: the stand density is calculated based on the total number of trees in the forest sample plot / sample area. If it meets the relevant standards of afforestation technical regulations, the score is 1; if it does not meet the relevant standards of afforestation technical regulations, the score is 0.

[0084] Determine the score of the development stage D12: judge the tree development stage, sapling stage (sapling stage is 1-3 years after the seedlings are planted and afforested); sapling stage-middle-aged forest stage-mature forest stage; overmature forest stage (overmature forest stage is characterized by slow growth of trees and reduced health). The scores of the three stages are 0.6, 1 and 0.3 respectively.

[0085] Determine the score of the degree of dieback D13: Judge the degree of tree dieback, no dieback is scored as 1; dieback length <20cm is scored as 0.7; dieback length <40cm and the dieback rate >50% is scored as 0.5; dieback length >40cm and the dieback rate >50% is scored as 0.3; the score of branch base survival is 0.

[0086] The score for determining the root exposure degree D14 is: when the roots are not exposed, the score is 1; when the roots are exposed < 20 cm, the score is 0.7; when the roots are exposed 20 cm < 40 cm, the score is 0.5; when the roots are exposed 40 cm < 60 cm, the score is 0.3; when the roots are exposed > 60 cm, the score is 0.

[0087] The score for determining the natural regeneration capacity of plants D15 is 1 when there are regeneration seedlings in the forest and 0 when there are no regeneration seedlings.

[0088] Determine the score of D16 for the presence or absence of sand barriers: the score is 1 when there are sand barriers in the sand-fixing belt, and the score is 0 when there are no sand barriers. When the score is 0, the scores of D17~D18 are all 0.

[0089] Determine the score of sand barrier action mode D17: To judge the sand barrier action mode, the score of afforestation within the sand barrier is 1, and the score of no afforestation within the sand barrier is 0.5.

[0090] Determine the score of the intact rate D18 of the sand barriers: When the intact rate of the sand barriers within the sand fixation and sand prevention belt is ≥ 90%, the score is 1; when 90% > the intact rate of the sand barriers ≥ 70%, the score is 0.75; when 70% > the intact rate of the sand barriers ≥ 50%, the score is 0.5; when the intact rate of the sand barriers < 50%, the score is 0.25.

[0091] Determine the score of the average annual precipitation D19: Query the local average annual precipitation through the meteorological department. When P ≥ 400mm, the score is 1; when 300mm ≤ P < 400mm, the score is 0.8; when 200mm ≤ P < 300mm, the score is 0.6; when 100mm ≤ P < 200mm, the score is 0.4; when P < 100mm, the score is 0.2.

[0092] Determine the score of the annual aridity D20: According to relevant standards, calculate the aridity based on the maximum possible evaporation / precipitation. When the annual aridity K < 1 (humid); 1.0 ≤ K < 1.6 (sub - humid); 1.6 ≤ K < 3.5 (sub - arid); 3.5 ≤ K < 16.0 (arid); K ≥ 16.0 (extremely arid), the scores are 1, 0.8, 0.6, 0.4, and 0.2 respectively.

[0093] Determine the score of the annual sand - starting wind speed D21: When the annual sand - starting wind speed U within the sand fixation and sand prevention belt is ≥ 10m / s, the score is 0; when 9m / s ≤ U < 10m / s, the score is 0.2; when 8m / s ≤ U < 9m / s, the score is 0.5; when 7m / s ≤ U < 8m / s, the score is 0.7; when 6m / s ≤ U < 7m / s, the score is 0.85; when 5m / s < U < 6m / s, the score is 1.

[0094] Determine the score of whether the bottleneck effect occurs D22: Judge whether the bottleneck effect occurs within the sand fixation and sand prevention belt. If the bottleneck effect occurs, the location and terrain of the protection system will form a wind speed bottleneck effect, which will increase the surface wind erosion, damage the sand barriers, expose the plant roots, break the fine roots, and weaken the anchoring force. The phenomenon of whole - plant death of Haloxylon ammodendron caused by the bottleneck effect in the groove area is very common, and the score is 0; when there is no bottleneck effect, the score is 1.

[0095] Determine the score of the groundwater level D23: When the groundwater level WT within the sand fixation and sand prevention belt is < the biological root length of the afforestation tree species, the score is 1; when WT > the biological root length of the afforestation tree species, it cannot supply or only produces a small amount of capillary rising water for root utilization, and the score is 0.

[0096] Determine the score of whether there is lateral seepage water supply from farmland D24: Judge whether there is lateral seepage water supply from farmland within the sand fixation and sand prevention belt. When the forest belt is next to the farmland, during the farmland irrigation process, the lateral seepage water can be utilized by poplar, Elaeagnus angustifolia, and Tamarix ramosissima on the edge of the oasis, ensuring their good growth and development, but it is not helpful for the growth of plants far from the farmland, and the score is 1; when there is no lateral seepage water supply from farmland, the score is 0.

[0097] Determine the score of the average shallow soil moisture content D25: Calculate the average soil moisture content SWC of 0-100 cm according to the following formula, SWC < 2% score is 0.3; 2% ≤ SWC < 4% score is 0.6; SWC ≥ 4% score is 1.

[0098] Soil moisture content = (soil moisture weight / soil dry weight) × 100%.

[0099] Determine the score of surface fluidity D26: To judge the surface fluidity, when the surface is in a flowing state, no crust is formed, and the score is 0; when the surface is in a semi-fixed state, a crust is partially formed, and the score is 0.25; when the surface is in a weakly fixed state, a physical crust is formed, and the score is 0.5; when the surface is in a strongly fixed state, a biological crust is formed, and the score is 1.

[0100] Determine the score of rodent damage D27: when rodent damage occurs in the sand-fixing belt, the score is 0; when there is no rodent damage, the score is 1.

[0101] Determine the score of pests and diseases D28: the score is 0 when pests and diseases occur; the score is 1 when there is no pests and diseases.

[0102] Determine the score of climate disaster D29: if a climate disaster occurs (spring drought or short-term continuous high temperature), the score is 0; if there is no climate disaster, the score is 1.

[0103] Determine the score of D30 for tending and management of unforested forests: when there are tending measures (irrigation, pruning, pest and disease control, etc.) in the sand-fixing belt forest, the score is 1; when there are no tending measures, the score is 0.

[0104] Determine whether the forest chief system D31 is implemented: Investigate whether the forest chief system is implemented in the sand-fixing belt. If the forest chief system is implemented, it is assumed that when unfavorable factors such as grazing, excessive mining, land reclamation and expansion, and groundwater extraction occur, the forest chief can arrive on site in time to deal with them, and the score is 1; if the forest chief system is not implemented, the score is 0.

[0105] Determine the score of ecological construction policy publicity D32: Propaganda of ecological construction policy to villagers can improve ecological awareness and forest protection awareness, reduce interference and damage to the protection system, and divide it into three situations: regular ecological construction policy publicity, occasional, and no publicity, with scores of 1, 0.5, and 0 respectively.

[0106] S4. Determine the current health status score according to the scores of each current health status evaluation indicator and the corresponding weight of the current health status evaluation indicator. Figure 3 In the flowchart shown, step S4 specifically includes the following steps:

[0107] S41. Determine the protection system integrity score based on the scores of each protection system integrity evaluation indicator and the corresponding weight of the protection system integrity evaluation indicator.

[0108] S42. Determine the score of the natural vegetation in the closed-off area according to the score of the natural vegetation evaluation index of each closed-off area and the corresponding weight of the natural vegetation evaluation index of the closed-off area.

[0109] S43. Determine the plantation forest score according to the scores of the plantation forest evaluation indicators and the corresponding weights of the plantation forest evaluation indicators.

[0110] S44. Determine the mechanical sand barrier score according to the score of each mechanical sand barrier evaluation indicator and the corresponding weight of the mechanical sand barrier evaluation indicator.

[0111] S45. Determine the current health status score based on the protection system integrity score, the natural vegetation score in the closed-off area, the artificial forest score, the mechanical sand barrier score and their respective weights.

[0112] In this embodiment, the current health status score is determined according to the following formula:

[0113]

[0114] Among them, H B1 is the current health status score, that is, the value of the current health status score indicator B1, k i is the weight of the i-th evaluation index, x i is the value of the i-th evaluation index. B1 ≥0.8, the sand-blocking and sand-fixing belt is in a healthy state; when 0.8>H B1 When H ≥0.5, the sand-fixing belt is in a sub-healthy state; B1 When the value is <0.5, the current status of the sand-fixing belt is unhealthy.

[0115] S5. Determine the health status driver score according to the scores of each health status driver evaluation indicator and the weights of the corresponding health status driver evaluation indicators. Figure 4 In the flowchart shown, step S5 specifically includes the following steps:

[0116] S51. Determine the climate factor score according to the score of each climate factor evaluation index and the corresponding climate factor evaluation index weight.

[0117] S52: Determine a terrain factor score according to the score of each terrain factor evaluation index and the weight of the corresponding terrain factor evaluation index.

[0118] S53. Determine the hydrological factor score according to the score of each hydrological factor evaluation indicator and the corresponding weight of the hydrological factor evaluation indicator.

[0119] S54. Determine the soil factor score according to the score of each soil factor evaluation index and the corresponding weight of the soil factor evaluation index.

[0120] S55. Determine the natural disaster factor score according to the score of each natural disaster factor evaluation indicator and the corresponding weight of the natural disaster factor evaluation indicator.

[0121] S56. Determine the management factor score according to the score of each management factor evaluation indicator and the weight of the corresponding management factor evaluation indicator.

[0122] S57, determining the health status driving factor score according to the climate factor score, terrain factor score, hydrological factor score, soil factor score, natural disaster factor score, management factor score and their respective weights. In this embodiment, the health status driving factor score is determined according to the following formula:

[0123]

[0124] Among them, H B2 is the health status driver score, that is, the value of the health status driver score indicator B2, k i is the weight of the i-th evaluation index, x i is the value of the i-th evaluation index. B2 ≥0.8, the sand-fixing belt is predicted to develop towards a healthy state; when 0.8>H B2 When H ≥0.5, it is predicted that the sand blocking and fixation will develop into a sub-healthy state; B2 When the pressure is <0.5, the sand-fixing belt will develop towards an unhealthy state.

[0125] S6. Determine the health status development trend score based on the current health status score, health status driving factor score and their respective weights. Determine the health status development trend score based on the following formula:

[0126] H A =0.7*H B1 +0.3*H B2 .

[0127] Among them, H A Score the trend of health status. A ≥0.8, the sand-blocking and sand-fixing belt is in a healthy development state; when 0.8>H A ≥0.5, it is in a sub-healthy state; when H A When <0.5, it is in an unhealthy development state.

[0128] In an exemplary embodiment of the present application, after determining the health status development trend score, in order to facilitate intuitive display of the scores of each evaluation index item, the method further includes the following steps:

[0129] S7. Determine the health status development trend of the sand-fixing belt protection system based on the health status development trend score and the development trend score threshold, and display the scores of each current health status evaluation indicator and each health status driving factor evaluation indicator in a visual way.

[0130] Based on the same inventive concept, the embodiment of the present application also provides a system for implementing the above-mentioned method for evaluating the health status development trend of a sand-blocking and sand-fixing belt protection system. The implementation scheme for solving the problem provided by the system is similar to the implementation scheme recorded in the above-mentioned method, so the specific limitations in one or more system embodiments provided below can refer to the limitations of the method for evaluating the health status development trend of a sand-blocking and sand-fixing belt protection system above, and will not be repeated here.

[0131] In an exemplary embodiment, Figure 5 As shown, a system for evaluating the health status development trend of the sand-fixing belt protection system is provided, including the following modules:

[0132] The evaluation index screening and determination module M1 is used to determine a number of current health status evaluation indicators and a number of health status driving factor evaluation indicators based on the field investigation of the sand blocking and fixing belt protection system and the evaluation of research data.

[0133] The evaluation index weight determination module M2 is used to determine the weight of each current health status evaluation index and the weight of each health status driving factor evaluation index by using the hierarchical analysis method.

[0134] The evaluation index score determination module M3 is used to determine the scores of various current health status evaluation indicators and the scores of various health status driving factor evaluation indicators based on the field investigation of the sand blocking and fixing belt protection system.

[0135] The current health status score determination module M4 is used to determine the current health status score according to the scores of each current health status evaluation indicator and the corresponding weights of the current health status evaluation indicators.

[0136] The health status driver score determination module M5 is used to determine the health status driver score according to the score of each health status driver evaluation indicator and the weight of the corresponding health status driver evaluation indicator.

[0137] The health status development trend score determination module M6 is used to determine the health status development trend score according to the current health status score, the health status driving factor score and their respective weights.

[0138] certainly, Figure 5 The architecture shown is only exemplary and can be omitted according to actual needs when implementing different functions. Figure 5 One or at least two components of the system shown.

[0139] The method and system for evaluating the health status development trend of the sand-blocking and sand-fixing belt protection system provided in the above-mentioned embodiments of the present application adopt a hierarchical analysis method to determine the weight of each evaluation indicator for the determined current health status evaluation indicators and health status driving factor evaluation indicators, so as to comprehensively and accurately reflect the health status of the sand-blocking and sand-fixing belt protection system; then, based on the field investigation, the score of each evaluation indicator is determined, and the current health status score is determined based on the score and weight of each current health status evaluation indicator, and the health status driving factor score is determined based on the score and weight of each health status driving factor evaluation indicator; finally, the health status development trend score is determined based on the current health status score, the health status driving factor score and their respective weights.

[0140] The evaluation index values ​​used in this plan are easy to obtain. Most of the indicators are obtained through field surveys and can be used directly or after simple calculations. The remaining indicators can be obtained through the official website or by retrieving information from industry departments. The evaluation system and hierarchy are clear, and the structure is clear, which can be mastered by technical personnel with professional backgrounds. In addition, it can provide early warning data for the prediction of the health trend of sand-fixing belts, which can accurately reveal the development trend of the health status of the protection system of sand-fixing belts and the main problems and risks faced in development. It can provide researchers with targeted optimization strategies based on the development trend scores, and provide a scientific basis for relevant management departments in sand prevention, resource allocation and policy adjustment.

[0141] In another exemplary embodiment, a computer device is provided. The computer device may be a server or a terminal. The internal structure diagram thereof may be as follows: Figure 6As shown. The computer device includes a processor, a memory, an input / output interface (Input / Output, referred to as I / O) and a communication interface. The processor, the memory and the input / output interface are connected through a system bus, and the communication interface is connected to the system bus through the input / output interface. The processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The input / output interface of the computer device is used to exchange information between the processor and an external device. The communication interface of the computer device is used to communicate with an external terminal through a network connection. When the computer program is executed by the processor, the relevant steps of a method for evaluating the health status development trend of a sand-blocking and sand-fixing belt protection system provided in the previous embodiment can be implemented.

[0142] Those skilled in the art will understand that Figure 6 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0143] In an exemplary embodiment, a computer device is further provided, including a memory and a processor, wherein a computer program is stored in the memory, and the processor implements the steps in the above-mentioned method embodiments when executing the computer program.

[0144] In an exemplary embodiment, a computer-readable storage medium is provided, storing a computer program, and when the computer program is executed by a processor, the steps in the above method embodiments are implemented.

[0145] In an exemplary embodiment, a computer program product is provided, including a computer program, and when the computer program is executed by a processor, the steps in the above method embodiments are implemented.

[0146] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data must comply with relevant regulations.

[0147] Those of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to the memory, database or other medium used in the embodiments provided in the present application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM may be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM).

[0148] The database involved in each embodiment provided in this application may include at least one of a relational database and a non-relational database. The non-relational database may include a distributed database based on blockchain, etc., but is not limited thereto. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, etc., but is not limited thereto.

[0149] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0150] This article uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and core ideas of this application. At the same time, for those skilled in the art, according to the ideas of this application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting this application.

Claims

1. A method for evaluating the development trend of the health status of a sand-fixing belt protection system, characterized in that: include: Based on the field investigation of the sand-fixing belt protection system and the evaluation of research data, several current health status evaluation indicators and several health status driving factor evaluation indicators are determined; The analytic hierarchy process is used to determine the weights of each current health status evaluation index and the weights of each health status driving factor evaluation index; Based on the field investigation of the sand-fixing belt protection system, determine the scores of each current health status evaluation indicator and each health status driving factor evaluation indicator; Determine the current health status score according to the scores of each current health status evaluation indicator and the corresponding weights of the current health status evaluation indicators; Determine the health status driver score based on the score of each health status driver evaluation indicator and the corresponding health status driver evaluation indicator weight; A health status development trend score is determined based on the current health status score, the health status driving factor score and their respective weights.

2. The method for evaluating the health status development trend of the sand-fixing belt protection system according to claim 1 is characterized in that: The current health status evaluation indicators include: several protection system integrity evaluation indicators, several closed-off area natural vegetation evaluation indicators, several artificial forest evaluation indicators and several mechanical sand barrier evaluation indicators; the health status driving factor evaluation indicators include: several climate factor evaluation indicators, several terrain factor evaluation indicators, several hydrological factor evaluation indicators, several soil factor evaluation indicators, several natural disaster factor evaluation indicators and several management factor evaluation indicators.

3. The method for evaluating the health status development trend of the sand-fixing belt protection system according to claim 2 is characterized in that: The current health status score is determined based on the scores of each current health status evaluation indicator and the corresponding weight of the current health status evaluation indicator, including: Determine the protection system integrity score based on the scores of each protection system integrity evaluation indicator and the corresponding weight of the protection system integrity evaluation indicator; Determine the natural vegetation score of the closed-off area based on the scores of the natural vegetation evaluation indicators of each closed-off area and the corresponding weights of the natural vegetation evaluation indicators of the closed-off area; Determine the plantation forest score based on the scores of each plantation forest evaluation indicator and the corresponding plantation forest evaluation indicator weight; Determine the mechanical sand barrier score according to the scores of each mechanical sand barrier evaluation index and the corresponding weight of the mechanical sand barrier evaluation index; The current health status score is determined based on the protection system integrity score, the natural vegetation score of the closed-off area, the artificial forest score, the mechanical sand barrier score and their respective weights.

4. The method for evaluating the health status development trend of the sand-fixing belt protection system according to claim 2 is characterized in that: The health status driver score is determined based on the scores of each health status driver evaluation indicator and the corresponding health status driver evaluation indicator weight, including: Determine the climate factor score based on the score of each climate factor evaluation indicator and the corresponding climate factor evaluation indicator weight; Determine the terrain factor score according to the score of each terrain factor evaluation index and the weight of the corresponding terrain factor evaluation index; Determine the hydrological factor score based on the score of each hydrological factor evaluation index and the corresponding weight of the hydrological factor evaluation index; Determine the soil factor score according to the score of each soil factor evaluation index and the corresponding weight of the soil factor evaluation index; Determine the natural disaster factor score based on the score of each natural disaster factor evaluation index and the corresponding natural disaster factor evaluation index weight; Determine the management factor score based on the score of each management factor evaluation indicator and the weight of the corresponding management factor evaluation indicator; A health status driver score is determined based on the climate factor score, the terrain factor score, the hydrological factor score, the soil factor score, the natural disaster factor score, the management factor score and their respective weights.

5. The method for evaluating the health status development trend of the sand-fixing belt protection system according to claim 2 is characterized in that: The evaluation indicators of the integrity of the protection system include: the width and lateral continuity of the sand-fixing belt; the evaluation indicators of natural vegetation in the closed-off area include: enclosure measures, coverage, species richness, Simpson evenness index and number of layers; the evaluation indicators of artificial forests include: the presence or absence of artificial forests, tree species selection, tree species composition, forest stand density, development stage, degree of dead branches, degree of root exposure and natural regeneration capacity of plants; the evaluation indicators of mechanical sand barriers include: the presence or absence of sand barriers, sand barrier action mode and barrier integrity rate; the evaluation indicators of climate factors include: average annual precipitation, annual dryness and annual sandstorm speed; the evaluation indicators of terrain factors include: whether the narrow channel effect occurs; the evaluation indicators of hydrological factors include: groundwater level and whether there is side seepage water recharge in farmland; the evaluation indicators of soil factors include: average water content of shallow soil and surface fluidity; the evaluation indicators of natural disaster factors include: rodent damage, pests and diseases and climate disasters; the evaluation indicators of management factors include: cultivation and protection of unforested areas, whether the forest chief system is implemented and the publicity of ecological construction policies.

6. The method for evaluating the health status development trend of the sand-fixing belt protection system according to claim 1 is characterized in that: The method for evaluating the development trend of the health status of the sand-fixing belt protection system also includes: According to the health status development trend score and the development trend score threshold, the health status development trend of the sand-fixing belt protection system is determined, and the scores of each current health status evaluation index and each health status driving factor evaluation index are displayed in a visual way.

7. A system for evaluating the health status development trend of the sand-fixing belt protection system, characterized in that: Used to implement the method for evaluating the development trend of the health status of the sand-blocking and sand-fixing belt protection system as claimed in any one of claims 1 to 6, the health status development trend evaluation system of the sand-blocking and sand-fixing belt protection system comprises: The evaluation index screening and determination module is used to determine several current health status evaluation indicators and several health status driving factor evaluation indicators based on the field investigation of the sand blocking and fixing belt protection system and the evaluation of research data; The evaluation index weight determination module is used to determine the weight of each current health status evaluation index and the weight of each health status driving factor evaluation index by using the hierarchical analysis method; An evaluation index score determination module is used to determine the scores of various current health status evaluation indicators and the scores of various health status driving factor evaluation indicators based on the field investigation of the sand blocking and fixing belt protection system; A current health status score determination module is used to determine the current health status score according to the scores of each current health status evaluation indicator and the corresponding weights of the current health status evaluation indicators; A health status driver score determination module is used to determine the health status driver score according to the score of each health status driver evaluation indicator and the weight of the corresponding health status driver evaluation indicator; The health status development trend score determination module is used to determine the health status development trend score according to the current health status score, the health status driving factor score and their respective weights.

8. A computer device comprising: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the method for evaluating the development trend of the health status of the sand-fixing belt protection system as described in any one of claims 1 to 6.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the method for evaluating the development trend of the health status of the sand-fixing belt protection system described in any one of claims 1 to 6 is implemented.

10. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the method for evaluating the development trend of the health status of the sand-fixing belt protection system described in any one of claims 1 to 6 is implemented.

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