A method, device and equipment for regulating ecological functions of sand prevention and control projects in sandy land

Abstract

The present application discloses an ecological function control method, device and equipment for a sandy land sand prevention and control project, which relates to the field of ecological restoration. The method includes: obtaining yellow sand information, vegetation coverage, soil information, meteorological information and water resource information of a target sandy area; determining the control space type of the target sandy area according to the yellow sand information, vegetation coverage, soil information and meteorological information; calculating the amount of soil wind erosion in the target sandy area according to the vegetation coverage, soil information and meteorological information; determining the water resource carrying capacity of the target sandy area according to the water resource information; determining sand prevention and control measures according to the control space type and soil wind erosion in the target sandy area; determining the bandwidth of sand prevention and control measures according to the water resource carrying capacity of the target sandy area; deploying sand prevention and control measures in the target sandy area according to the sand prevention and control measures and the bandwidth to control the ecological function of the target sandy area. The present application improves the effectiveness of sand prevention and control in the target sandy area, thereby improving the ecological function of the target sandy area.

Description

Technical Field

[0001] The present application relates to the field of ecological restoration, and in particular to a method, device and equipment for regulating ecological functions of sand prevention and control projects in sandy land. Background Art

[0002] In recent years, a series of major ecological projects such as sand prevention and control have been implemented in the sandy areas adjacent to the river banks, and the overall ecological environment has been alleviated. However, there are problems such as lack of experience in the design and arrangement of sand prevention and control measures, and unscientific and inaccurate consideration of water resources carrying capacity. Summary of the invention

[0003] The purpose of this application is to provide a method, device and equipment for regulating the ecological functions of sand prevention and control projects in sandy areas, which can improve the effectiveness of sand prevention and control in target sandy areas, and thus improve the ecological functions of target sandy areas.

[0004] To achieve the above objectives, this application provides the following solutions:

[0005] In the first aspect, the present application provides a method for regulating the ecological function of a sandy land sand prevention and control project, comprising:

[0006] Obtain yellow sand information, vegetation coverage, soil information, meteorological information and water resource information in the target sand area;

[0007] Determine the control space type of the target sand area according to the yellow sand information, the vegetation coverage, the soil information and the meteorological information; the control space type includes the sand blocking front area, the sand fixation engineering area, the sand fixation vegetation area, the sand industry area and the sand entry into the river area;

[0008] Calculating the amount of soil wind erosion in the target sandy area according to the vegetation coverage, the soil information and the meteorological information;

[0009] Determining the water resource carrying capacity of the target sand area based on the water resource information;

[0010] Determine measures for preventing and controlling sand according to the type of control space and the amount of wind erosion of soil in the target sandy area;

[0011] Determine the bandwidth of sand prevention and control measures based on the water resource carrying capacity of the target sandy area;

[0012] According to the sand prevention and control measures and the bandwidth of the sand prevention and control measures, sand prevention and control measures are deployed in the target sand area to regulate the ecological function of the target sand area.

[0013] In the second aspect, the present application provides an ecological function control device for a sandy land sand prevention and control project, comprising:

[0014] Data acquisition module, used to obtain yellow sand information, vegetation coverage, soil information, meteorological information and water resource information of the target sand area;

[0015] A control space classification module is connected to the data acquisition module and is used to determine the control space type of the target sand area according to the yellow sand information, the vegetation coverage, the soil information and the meteorological information; the control space type includes the sand blocking front area, the sand fixing engineering area, the sand fixing vegetation area, the sand industry area and the sand entering the river area;

[0016] A wind erosion amount calculation module, connected to the data acquisition module, for calculating the soil wind erosion amount in the target sand area according to the vegetation coverage, the soil information and the meteorological information;

[0017] A water resource analysis module, connected to the data acquisition module, for determining the water resource carrying capacity of the target sand area according to the water resource information;

[0018] A measure screening module, connected to the control space classification module and the wind erosion amount calculation module respectively, for determining sand prevention and control measures according to the control space type and soil wind erosion amount of the target sand area;

[0019] A bandwidth adjustment module, connected to the water resource analysis module, for determining the bandwidth of sand prevention and control measures according to the water resource carrying capacity of the target sand area;

[0020] The ecological control module is connected to the measure screening module and the bandwidth adjustment module respectively, and is used to deploy sand control measures in the target sand area according to the sand control measures and the bandwidth of the sand control measures to regulate the ecological function of the target sand area.

[0021] In a third aspect, the present application provides 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 above-mentioned method for regulating the ecological functions of sand prevention and control projects in sandy land.

[0022] According to the specific embodiments provided by the present application, the present application discloses the following technical effects: the present application provides a method, device and equipment for regulating the ecological functions of sand prevention and control projects in sandy land. In the process of determining sand prevention and control measures, it covers three levels: the type of prevention and control space in the target sand area, the amount of soil wind erosion and the carrying capacity of water resources. It is more suitable for the multi-objective needs of the current sand prevention and control projects, introduces water resource carrying capacity into the key link of the configuration of sand prevention and control measures, determines the bandwidth of sand prevention and control measures, improves the governance effect of the target sand area, and thereby improves the ecological function of the target sand area. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] 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.

[0024] Figure 1 This is an application environment diagram of an ecological function regulation method for a sand prevention and control project in sandy land in one embodiment of the present application.

[0025] Figure 2 A schematic flow chart of a method for regulating ecological functions of a sand prevention and control project in sandy land provided in one embodiment of the present application.

[0026] Figure 3 A block diagram of a method for regulating ecological functions of a sand prevention and control project in sandy land provided in one embodiment of the present application.

[0027] Figure 4 A schematic diagram of the functional modules of an ecological function control device for a sand prevention and control project in sandy land provided in another embodiment of the present application.

[0028] Figure 5 A schematic diagram of the structure of a computer device provided in one embodiment of the present application. DETAILED DESCRIPTION

[0029] 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.

[0030] 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.

[0031] The ecological function control method of the sandy land sand prevention and control project provided in the embodiment of the present application can be applied to Figure 1In the application environment shown. Among them, the terminal 102 communicates with the server 104 through the network. The data storage system can store the data that the server 104 needs to process. The data storage system can be set up separately, integrated on the server 104, or placed on the cloud or other servers. The terminal 102 can send the yellow sand information, vegetation coverage, soil information, meteorological information and water resource information of the target sand area to the server 104. After receiving the yellow sand information, vegetation coverage, soil information, meteorological information and water resource information of the target sand area, the server 104 determines the sand prevention and control measures and their bandwidth. The server 104 can feedback the obtained sand prevention and control measures and their bandwidth to the terminal 102. In addition, in some embodiments, the ecological function regulation method of the sand prevention and control project can also be implemented by the server 104 or the terminal 102 alone.

[0032] The terminal 102 may be, but is not limited to, various desktop computers, laptop computers, smart phones, tablet computers, IoT devices, and portable wearable devices. The IoT devices may be smart speakers, smart TVs, smart air conditioners, smart vehicle-mounted devices, etc. The portable wearable devices may be smart watches, smart bracelets, head-mounted devices, etc. The server 104 may be implemented as an independent server or a server cluster consisting of multiple servers, or may be a cloud server.

[0033] In an exemplary embodiment, Figure 2 As shown, a method for regulating the ecological function of a sandy land sand prevention and control project is provided. 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 can be executed by a terminal and a server together. In the embodiment of the present application, the method is applied to Figure 1 The server 104 in the example is used for explanation, and the steps include the following steps 201 to 207.

[0034] Step 201, obtaining yellow sand information, vegetation coverage, soil information, meteorological information and water resource information of the target sand area.

[0035] In a specific example, the target sand area is a riverside sand area. An unmanned aerial vehicle is used to conduct an aerial survey of the target sand area, obtain an aerial survey image, and generate a digital elevation model of the target sand area.

[0036] Analyze the digital elevation model to obtain yellow sand information. Figure 3 As shown, the yellow sand information includes dune elevation, dune area, dune movement direction and annual dune displacement. Among them, the dune elevation is the height of the dune. By comparing the digital elevation models of different historical periods, the dune movement direction and annual dune displacement are obtained.

[0037] Analyze the land use type and vegetation coverage of the target sand area based on aerial survey images. Among them, land use types include sandy land, forest land, construction land, rivers and lakes, etc., which are used to determine the location of the target sand area. It can be obtained based on satellite remote sensing images through unsupervised classification and visual interpretation methods, specifically by using different colors to divide different areas of satellite remote sensing images.

[0038] Vegetation coverage is obtained based on the preset normalized vegetation index formula: VFC =( NDVI - NDVI min ) / ( NDVI max - NDVI min );in, VFC is the vegetation coverage, NDVI is the normalized difference vegetation index, NDVI min is the minimum normalized difference vegetation index value, NDVI max is the maximum normalized difference vegetation index value. NDVI , NDVI min , NDVI max All of them are obtained through known information or field investigation in the target sand area.

[0039] Soil information includes: soil fertility, thickness of wet sand layer, soil moisture content, soil bulk density, soil mechanical composition, particle size classification, soil physical properties, organic carbon, total nitrogen, available phosphorus, available potassium, pH value, etc.

[0040] The process of obtaining soil information includes: excavating soil profiles in the sample plots in the study area, taking soil in layers according to 0cm~20cm, 20cm~40cm, and 40cm~60cm, and bringing them back to the room for air drying. The drying method is used to determine the soil moisture content; the ring knife method is used to determine the soil bulk density; the specific gravity meter rapid measurement method is used to determine the soil mechanical composition; the Karl Fischer system is used to determine the particle size classification; the ring knife method is used to determine the soil bulk density and other soil physical properties; the potassium dichromate-concentrated sulfuric acid external heating method is used to determine organic carbon; the semi-micro Kelvin distillation method is used to determine total nitrogen; the sodium bicarbonate extraction molybdenum antimony colorimetric method is used to determine the available phosphorus; the acetic acid ammonium extraction flame photometry method is used to determine the available potassium; the pH value is determined by the pH acidity meter potentiometric method.

[0041] Meteorological information includes local air temperature, air humidity, wind speed and direction, wind speed for raising sand, potential evaporation, etc. It can be obtained from meteorological stations in nearby areas or by setting up fixed or portable meteorological monitoring equipment.

[0042] Compared with the traditional spatial configuration method of sand prevention and control measures that relies on experience or a large amount of ground surveys, this application adopts a method that combines UAV remote sensing aerial surveys and a small amount of ground surveys to obtain relevant information of the target sand area, which can effectively supplement the errors caused by the lack of experience and theory of designers, and use standardized modeling and investigation methods to enable planning and design personnel to quickly determine the layout of new sand control projects.

[0043] Step 202, determining the control space type of the target sand area based on the yellow sand information, the vegetation coverage, the soil information and the meteorological information.

[0044] The types of prevention and control spaces include sand-blocking front areas, sand-fixing engineering areas, sand-fixing vegetation areas, sand industry areas and sand-entry-into-river areas.

[0045] In a specific example, step 202 includes the following steps (21) to (23).

[0046] (21) Determine the landform type of the target sand area based on the yellow sand information and the meteorological information.

[0047] In the present application, the landform types include sand ripples, sand dunes, dune chains and sand plains.

[0048] ①If and and , then the landform type of the target sand area is sand ripples. This logic means that the direction of the sand ripples is consistent with the dominant wind direction.

[0049] in, h is the dune elevation of the target sand area, A is the dune area of ​​the target sand area, D is the movement direction of sand dunes in the target sand area, is the maximum height threshold of sand ripples, is the maximum area threshold of sand ripples, is the dominant wind direction determined based on meteorological information. is the first allowable angle deviation, Indicates taking the absolute value.

[0050] ②If and and and , then the landform type of the target sand area is sand dune. This logic means that the direction of the sand dune is consistent with the dominant wind direction.

[0051] in, is the maximum height threshold of the dune, is the maximum area threshold of the sand dune, is the second allowable angle deviation, ,M is the annual displacement of the dune, is the dune displacement threshold.

[0052] ③If and and and , then the landform type of the target sand area is a dune chain. This logic means that a dune chain is composed of a series of dunes that show continuity on the map and have similar movement directions.

[0053] in, is the maximum height threshold of the dune chain, , is the minimum area threshold of the dune chain, For the Dune Chain i The direction of movement of the sand dunes, For the Dune Chain j The movement direction of the dunes, i The dunes and j The dunes are adjacent to each other. is the third allowable angle deviation, is the average displacement of the dune chain.

[0054] ④If and , then the landform type of the target sand area is sand plain. This logic means that the sand on the sand plain moves with the wind, but there will be no obvious dune structure, and there is no need to specify the moving direction.

[0055] in, is the maximum height threshold of the sand plain, is the minimum area threshold of sand plain.

[0056] (22) Determine the degree of fixation of the target sand area based on the landform type and the vegetation coverage.

[0057] In the present application, the degree of fixation includes mobile sand, semi-fixed sand and fixed sand.

[0058] ① If the landform type is sand ripples and VFC ∈ VFC 1, the fixity of the target sand area is mobile sand.

[0059] If the landform type is sand dunes and VFC ∈ VFC 1 and M > M thre , then the fixed degree of the target sand area is mobile sand.

[0060] If the landform type is a dune chain andVFC ∈ VFC 1 and M avg > M thre , then the fixed degree of the target sand area is mobile sand.

[0061] ② If the landform type is sand ripples and VFC ∈ VFC 2, the fixity of the target sand area is semi-fixed sand.

[0062] If the landform type is sand dunes and VFC ∈ VFC 2 and M > M thre , then the fixity of the target sand area is semi-fixed sand.

[0063] If the landform type is a dune chain and VFC ∈ VFC 2 and M avg > M thre , then the fixity of the target sand area is semi-fixed sand.

[0064] ③ If the landform type is sand ripples and VFC ∈ VFC 3, then the fixation degree of the target sand area is fixed sand.

[0065] If the landform type is sand dunes and VFC ∈ VFC 3 and M < M thre , then the fixation degree of the target sand area is fixed sand.

[0066] If the landform type is a dune chain and VFC ∈ VFC 3 and M avg < M thre , then the fixation degree of the target sand area is fixed sand.

[0067] If the landform type is sand plain and VFC ∈ VFC 3, then the fixation degree of the target sand area is fixed sand.

[0068] in, VFC is the vegetation coverage, VFC 1 is the preset first coverage threshold range (0%-10%), VFC2 is the preset second coverage threshold range (10%~29%), VFC 3 is the pre-set third coverage threshold range (30%~100%).

[0069] (23) Determine the type of control space in the target sand area based on the fixation degree, the soil information, and the meteorological information.

[0070] First, the soil nutrient level is determined according to the soil information, and the moisture condition is determined according to the meteorological information. The soil nutrient level includes low, medium and high, and the moisture condition includes arid, semi-arid and moist. Among them, the soil nutrients are determined according to the soil information, and the soil nutrients are divided into three levels: low, medium and high according to the content and proportional relationship of organic matter, total nitrogen, hydrolyzed nitrogen, available phosphorus and available potassium in the soil.

[0071] ① If the degree of fixation is mobile sand, the soil nutrient level is low, and the moisture condition is drought, then the prevention and control space type of the target sand area is the sand blocking front area.

[0072] ② If the degree of fixation is semi-fixed sand, the soil nutrient level is medium, and the moisture conditions are semi-arid, then the prevention and control space type of the target sand area is a sand fixation engineering area.

[0073] ③ If the fixation degree is fixed sand, the soil nutrient level is high, and the moisture condition is moist, then the prevention and control space type of the target sand area is sand-fixing vegetation area.

[0074] ④ If the degree of fixation is semi-fixed sand, the soil nutrient level is medium, and the moisture condition is moist, then the prevention and control space type of the target sand area is a sand industry area.

[0075] ⑤ If the degree of fixation is semi-fixed sand, and the soil nutrient level is medium, and the moisture condition is moist, and the distance between the target sand area and rivers and lakes is less than the set distance value (that is, the target sand area is close to rivers and lakes), then the prevention and control space type of the target sand area is the sand-entry-blocking area.

[0076] Step 203, calculating the amount of soil wind erosion in the target sand area according to the vegetation coverage, the soil information and the meteorological information.

[0077] In a specific example, a soil wind erosion model is pre-set, and the amount of soil wind erosion in the target sandy area is determined by the soil wind erosion model. The soil wind erosion model uses the Revised Wind Erosion Equation (RWEQ) model, and fully considers multiple factors such as meteorology, soil erodibility, soil crust, surface vegetation cover and surface roughness. It has the advantages of comprehensive factor consideration and easy data acquisition.

[0078] Specifically, the following formula is used to calculate the amount of soil wind erosion in the target sandy area.

[0079] .

[0080] in, is the amount of soil wind erosion, in t / km -2 a, that is, the amount of soil erosion per square kilometer in a unit period of time (tons), is the key plot length in meters, , is the maximum transport capacity of wind-blown sand, in kg / m3. , is the downwind distance in meters, is the meteorological factor determined based on meteorological information, in kg / m. is the soil erodibility factor determined based on soil information, is the soil crust factor determined based on soil information, is the surface roughness factor determined based on soil information, It is a vegetation factor determined based on vegetation coverage, and each factor has no dimension.

[0081] ① Meteorological factors That is, the effects of various meteorological factors such as precipitation, wind speed, temperature, snow depth, etc. on soil wind erosion are summarized as follows.

[0082] .

[0083] .

[0084] SD =1- P ( H snow >25.4mm).

[0085] in, WS is the wind speed factor, in m / s 3 , N is the wind speed, N d is the number of days of the test, ρ is the air density, in kg / m 3 , g is the acceleration due to gravity, in m / s 2 , SW is the soil moisture factor, SD is the snow cover factor, both are dimensionless. is the potential relative evaporation, in mm, Ris the rainfall in mm, I is the irrigation volume, in mm, R d is the rainfall or irrigation days, N b For monthly wind speed greater than 5m / s, H snow is the snow depth in mm, P ( H snow >25.4mm) is the ratio of the number of days with snow depth greater than 25.4mm to the total number of days in a year.

[0086] ②Soil erodibility factor and soil crust factor They are all related to the physical and chemical properties of the soil, and are the amount of soil wind erosion caused by factors such as the physical, chemical and mechanical composition of the soil. The formula is as follows.

[0087] .

[0088] .

[0089] in, is the coarse sand content of soil (%), is the soil silt content (%), is the clay content of soil (%), OM is the soil organic matter content (%), CaCO 3 is the soil calcium carbonate content (%).

[0090] ③Surface roughness factor The calculation formula is: ;in, α is the terrain slope, which was extracted using the digital elevation model in ArcGIS.

[0091] ④ The coverage of vegetation has an important impact on soil wind erosion and plays a certain role in hindering the movement of wind-blown sand and soil particles. The vegetation coverage factor The calculation formula is: ;in, c is the vegetation coverage (%).

[0092] Furthermore, the minimum threshold of soil wind erosion is predefined and the maximum threshold of soil wind erosion . The amount of soil erosion and and Compare and determine the wind erosion level of the target sand area: The target sand area is slightly eroded by wind. The target sand area is moderately eroded. The target sand area was severely wind eroded.

[0093] Furthermore, in step 203, the demand for sand control and sand fixation can be comprehensively considered, and the demand for sand control and sand fixation can be determined from the two aspects of wind erosion intensity and socio-economic factors. Wind erosion intensity includes the speed of sand dune movement, soil wind erosion amount, main harmful wind direction and human activities. Socio-economic factors include policy factors, development plans and life and production needs. According to wind erosion intensity and socio-economic factors, the control needs are determined, including: wind control and sand fixation, increasing income, beautifying the environment, supporting dual carbon goals and developing sand industry.

[0094] Step 204: Determine the water resource carrying capacity of the target sand area based on the water resource information.

[0095] In this application, the water resource information includes multiple evaluation indicators. Specifically, the climate, hydrology, statistical yearbooks, water resource bulletins, and water resource demonstration materials of the target sandy area are collected. The water resource availability, ecological water consumption, and life and production water consumption are analyzed to determine 9 evaluation indicators: rainfall, available surface water, available groundwater, evapotranspiration, vegetation ecological water demand, sand industry water demand, agricultural water demand, life water demand, and industrial water demand.

[0096] According to the different characteristics of each evaluation index, it is divided into two different attributes: positive and negative.

[0097] For positive indicators: the larger the indicator value, the better, such as rainfall, available surface water, etc.

[0098] For negative indicators: the smaller the indicator value, the better, such as evapotranspiration, vegetation ecological water demand, etc.

[0099] The weighted sum of multiple evaluation indicators is performed to obtain the demand score. Specifically, a demand calculation model is pre-set, and the demand calculation model includes weight coefficients corresponding to each evaluation indicator. The demand score is obtained by adding them together. The calculation formula is: ;in, Score the need, For the The weight coefficient of the evaluation index is For the The standardized value of an evaluation index (positive values ​​are taken for positive indicators and negative values ​​are taken for negative indicators).

[0100] The water resource carrying capacity includes fully satisfied, relatively satisfied, satisfied, lacking and completely unsatisfied.

[0101] If the demand score is greater than the first demand threshold, the water resource carrying capacity is fully met.

[0102] If the demand score is less than or equal to the first demand threshold and greater than the second demand threshold, the water resource carrying capacity is relatively satisfied.

[0103] If the demand score is less than or equal to the second demand threshold and greater than the third demand threshold, the water resource carrying capacity is met.

[0104] If the demand score is less than or equal to the third demand threshold and greater than the fourth demand threshold, the water resource carrying capacity is insufficient.

[0105] If the demand score is less than or equal to the fourth demand threshold, the water resource carrying capacity is completely unsatisfied.

[0106] The first demand threshold, the second demand threshold, the third demand threshold and the fourth demand threshold are all pre-set values, and the first demand threshold>the second demand threshold>the third demand threshold>the fourth demand threshold.

[0107] Step 205, determining sand prevention and control measures according to the type of prevention and control space and the amount of soil wind erosion in the target sand area.

[0108] In a specific example, the sand prevention and control measures include: a front-line sand-blocking belt of the Goulich sand barrier, a low-standing sand barrier of Salix psammophila or wheat straw, a native vegetation sand-fixing protection belt, a sand industry development belt, and a belt combining plant engineering measures to prevent sand from entering the river.

[0109] ① If the target sand area is a sand blocking frontier area, and , the front sand barrier of the Gollis sand barrier is used to reduce the flying of sand and dust.

[0110] If the target sand area is a sand blocking frontier area, and , the front sand-blocking belt of the high-alpine sand barrier and the low-standing sand barrier of tamarisk or wheat straw are used to strengthen the fixing effect.

[0111] If the target sand area is a sand blocking frontier area, and , then increase the density of the sand-blocking belt and the number of sand barriers, and use mechanical protection measures when necessary.

[0112] ② If the target sand area is a sand fixation project area, and , the low vertical sand barrier and sand fixing belt made of salix psammophila or wheat straw is used to strengthen the fixing effect.

[0113] If the target sand area is a sand fixation project area, and , then increase the density of the low vertical sand barrier sand fixing belt of Salix psammophila or wheat straw.

[0114] If the target sand area is a sand fixation project area, and , the low vertical sand barrier of Salix psammophila or wheat straw and chemical measures are used. Specifically, chemical measures such as sand fixation agents can be further used.

[0115] ③ If the target sand area is a sand-fixing vegetation area, and , then the native vegetation sand fixation protection belt is adopted, that is, native vegetation is planted to form a sand fixation protection belt.

[0116] If the target sand area is a sand-fixing vegetation area, and , then increase the density of the native vegetation sand fixation protection belt.

[0117] If the target sand area is a sand-fixing vegetation area, and , then the native vegetation sand fixation protection belt and chemical measures are adopted. Specifically, chemical measures such as sand fixation agents can be further used.

[0118] ④ If the target sand area is a sand industry area, and , then the sand industry development belt will be adopted.

[0119] If the target sand area is a sand industry area, and , then the density of the sand industry development zone will be increased.

[0120] If the target sand area is a sand industry area, and , the intensity of sand industry development will be reduced. At the same time, the focus will be on vegetation restoration and soil improvement.

[0121] ⑤ If the target sand area is a sand-blocking area, and , then the above-mentioned plant engineering measures are combined with the sand-blocking belt.

[0122] If the target sand area is a sand-blocking river area, and , then increase the density of the plant engineering measures combined with the sand-blocking belt to reduce the amount of sand and dust entering the river.

[0123] If the target sand area is a sand-blocking river area, and , then increase the density of plant engineering measures. At the same time, strengthen sand barrier construction and vegetation restoration.

[0124] Step 206, determining the bandwidth of sand prevention and control measures according to the water resource carrying capacity of the target sandy area.

[0125] Specifically, based on the water resource carrying capacity of the target sandy area, the bandwidth of the plant sand control belt and the bandwidth of the developable sand industry will be determined, and the bandwidth of the overall sand prevention and control measures will be adjusted and optimized.

[0126] The width P0 of the basic plant sand control belt and the sand industry belt is set in advance; the overall sand prevention and control measures will consume water resources, and the water resource carrying capacity is taken as the total amount to establish the relationship between the water resource carrying capacity level and the bandwidth.

[0127] For areas where water resource carrying capacity is fully met: if water resources are sufficient, the width of the plant sand control belt and the width of the sand industry belt will be increased by △P1.

[0128] For areas with relatively sufficient water resource carrying capacity: water resources are relatively sufficient, and the width of the plant sand control belt and the sand industry belt is moderately increased, with the increase being △P2, and △P2<△P1.

[0129] For areas where water resources carrying capacity is met: water resources can basically meet demand, maintain a reasonable width of the plant sand control belt and sand industry belt, and maintain the original bandwidth value of P0.

[0130] For areas with insufficient water resource carrying capacity: water resources are limited, and it is necessary to reduce the width of the plant sand control belt, give priority to the development of the sand industry, and the increase is -△P3.

[0131] For areas where water resource carrying capacity is completely unsatisfied: water resources are seriously insufficient, the width of the plant sand control belt should be reduced as much as possible, and the focus should be on developing water-saving sand industry. The increase should be -△P4, and -△P4<-△P3.

[0132] Determine the bandwidth P of sand prevention and control measures according to the water resources carrying capacity: P = P0 + (±△P n ), (n=1~4).

[0133] Step 207: deploying sand prevention and control measures in the target sand area according to the sand prevention and control measures and the bandwidth of the sand prevention and control measures to regulate the ecological function of the target sand area.

[0134] Specifically, the sand prevention and control measures obtained in step 205 are combined with the bandwidth obtained in step 206 and configured perpendicular to the river channel. From far to near, the front sand-blocking belt of the Goulich sand barrier, the low-standing sand barrier of tamarisk or wheat straw, the native vegetation sand-fixing protection belt, the sand industry development belt, and the plant engineering measures combined with the sand-entry-into-the-river belt are arranged in sequence to form a multi-in-one spatial configuration pattern of sand prevention and control measures.

[0135] This application investigates the soil water and fertilizer characteristics and wind erosion intensity of the target sandy areas, and divides the prevention and control space of the sandy areas on both sides of the river with the river as the boundary. It can accurately adapt to the characteristics of the underlying surface and wind and sand activities in the sandy areas along the river, and effectively avoid the problem of poor governance results caused by the large-scale implementation of single measures. In the process of determining the sand prevention and control measures, the three levels of sandy area governance space, water resource carrying capacity and governance needs are considered, and it is more suitable for the current multi-objective needs of sand prevention and control projects. Introducing water resource carrying capacity into the key link of the configuration of sand prevention and control measures, the traditional development and protection plan that relies on design experience and departmental decision-making is transformed into a rigid constraint based on water resources, screening sand-fixing plant combinations, and determining whether the sand industry can be developed. While preventing and controlling sand in a scientific and accurate manner, effective resources can be fully utilized to develop the sand industry.

[0136] The present application also provides a specific example, in which the ecological function regulation method of sand control and sand fixation engineering was tested and demonstrated in a sand control and sand fixation engineering in a certain desert area. Examples of the formed sand control belt system include: high vertical nylon net sand barrier (about 1.5 meters in height), low vertical tamarisk square sand barrier (about 25 cm in height), native plant pioneer protection belt (1×1.5 meters for poplar, Caryopteris mongolica, etc., 6 meters in width, 5 belts configured), row-type tree, shrub and grass protection belt (5 rows of sand-fixing shrubs + 5 rows of large-crown sand-fixing shrubs + 4 rows of upright sand-fixing shrubs + 2 rows of tall trees), ecological economic industry development belt with both protection function, and river slope control belt.

[0137] Based on the same inventive concept, the embodiment of the present application also provides an ecological function control device for sandy land sand control engineering for realizing the ecological function control method of the sandy land sand control engineering involved in the above-mentioned sandy land sand control engineering. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme recorded in the above-mentioned method, so the specific limitations in the embodiments of one or more ecological function control devices for sandy land sand control engineering provided below can refer to the limitations of the ecological function control method for sandy land sand control engineering above, and will not be repeated here.

[0138] In an exemplary embodiment, Figure 4 As shown, an ecological function control device for a sandy land sand prevention and control project is provided, including: a data acquisition module 401, a prevention and control space classification module 402, a wind erosion amount calculation module 403, a water resource analysis module 404, a measure screening module 405, a bandwidth adjustment module 406 and an ecological control module 407.

[0139] The data acquisition module 401 is used to obtain yellow sand information, vegetation coverage, soil information, meteorological information and water resource information of the target sand area.

[0140] The control space classification module 402 is connected to the data acquisition module 401, and the control space classification module 402 is used to determine the control space type of the target sand area according to the yellow sand information, the vegetation coverage, the soil information and the meteorological information. The control space types include sand blocking front area, sand fixing engineering area, sand fixing vegetation area, sand industry area and sand blocking area.

[0141] The wind erosion amount calculation module 403 is connected to the data acquisition module 401, and the wind erosion amount calculation module 403 is used to calculate the soil wind erosion amount of the target sand area according to the vegetation coverage, the soil information and the meteorological information.

[0142] The water resource analysis module 404 is connected to the data acquisition module 401, and the water resource analysis module 404 is used to determine the water resource carrying capacity of the target sand area according to the water resource information.

[0143] The measure screening module 405 is connected to the control space classification module 402 and the wind erosion amount calculation module 403 respectively, and the measure screening module 405 is used to determine the sand prevention and control measures according to the control space type and soil wind erosion amount of the target sand area.

[0144] The bandwidth adjustment module 406 is connected to the water resource analysis module 404, and is used to determine the bandwidth of the sand prevention and control measures according to the water resource carrying capacity of the target sand area.

[0145] The ecological regulation module 407 is connected to the measure screening module 405 and the bandwidth adjustment module 406 respectively. The ecological regulation module 407 is used to deploy sand control measures in the target sand area according to the sand control measures and the bandwidth of the sand control measures to regulate the ecological function of the target sand area.

[0146] In an 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 5As shown. The computer device includes a processor, a memory, an input / output interface (Input / Output, I / O) and a communication interface. Among them, 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. Among them, 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 database of the computer device is used to store yellow sand information, vegetation coverage, soil information, meteorological information and water resources information in the target sand area. 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, a method for regulating the ecological function of a sand prevention and control project in sandy land is realized.

[0147] Those skilled in the art will understand that Figure 5 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. In an exemplary embodiment, a computer device is 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.

[0148] 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.

[0149] 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.

[0150] 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.

[0151] Those skilled 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 this 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), magnetoresistive 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).

[0152] 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.

[0153] 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.

[0154] 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 regulating the ecological function of a sandy land sand prevention and control project, characterized in that: The ecological function control method of the sandy land sand prevention and control project includes: Obtaining yellow sand information, vegetation coverage, soil information, meteorological information and water resource information of the target sand area; the yellow sand information includes sand dune elevation, sand dune area, sand dune movement direction and sand dune annual displacement; Determine the control space type of the target sand area according to the yellow sand information, the vegetation coverage, the soil information and the meteorological information; the control space type includes the sand blocking front area, the sand fixation engineering area, the sand fixation vegetation area, the sand industry area and the sand entry into the river area; Determine the control space type of the target sand area according to the yellow sand information, the vegetation coverage, the soil information and the meteorological information, specifically including: Determine the landform type of the target sand area according to the yellow sand information and the meteorological information; the landform type includes sand ripples, sand dunes, sand dune chains and sand plains; like and and , then the landform type of the target sand area is sand ripple; where, h is the dune elevation of the target sand area, A is the dune area of ​​the target sand area, D is the movement direction of sand dunes in the target sand area, is the maximum height threshold of sand ripples, is the maximum area threshold of sand ripples, is the dominant wind direction determined based on meteorological information. is the first allowable angle deviation, Indicates taking the absolute value; like and and and , then the landform type of the target sand area is sand dune; wherein, is the maximum height threshold of the dune, is the maximum area threshold of the sand dune, is the second allowable angle deviation, , M is the annual displacement of the dune, is the dune displacement threshold; like and and and , then the landform type of the target sand area is a dune chain; where, is the maximum height threshold of the dune chain, , is the minimum area threshold of the dune chain, For the Dune Chain i The direction of movement of the sand dunes, For the Dune Chain j The movement direction of the dunes, i The dunes and j The dunes are adjacent to each other. is the third allowable angle deviation, is the average displacement of the dune chain; like and , then the landform type of the target sand area is sand plain; where, is the maximum height threshold of the sand plain, is the minimum area threshold of the sand plain; Determining the fixation degree of the target sand area according to the landform type and the vegetation coverage; the fixation degree includes mobile sand, semi-fixed sand and fixed sand; If the landform type is sand ripples and VFC ∈ VFC 1, or the landform type is sand dune and VFC ∈ VFC 1 and M > M thre , or the landform type is a dune chain and VFC ∈ VFC 1 and M avg > M thre , then the fixed degree of the target sand area is mobile sand; If the landform type is sand ripples and VFC ∈ VFC 2, or the landform type is sand dune and VFC ∈ VFC 2 and M > M thre , or the landform type is a dune chain and VFC ∈ VFC 2 and M avg > M thre , then the fixity of the target sand area is semi-fixed sand; If the landform type is sand ripples and VFC ∈ VFC 3, or the landform type is sand dune and VFC ∈ VFC 3 and M < M thre , or the landform type is a dune chain and VFC ∈ VFC 3 and M avg < M thre , or the landform type is sand plain and VFC ∈ VFC 3, then the fixation degree of the target sand area is fixed sand; in, VFC is the vegetation coverage, VFC 1 is the preset first coverage threshold range, VFC 2 is a preset second coverage threshold range, VFC 3 is a preset third coverage threshold range; Determine the control space type of the target sand area according to the fixation degree, the soil information and the meteorological information, specifically including: Determine the soil nutrient level according to the soil information, and determine the moisture condition according to the meteorological information; the soil nutrient level includes low, medium and high, and the moisture condition includes arid, semi-arid and humid; If the fixed degree is mobile sand, the soil nutrient level is low, and the moisture condition is drought, then the control space type of the target sand area is the sand blocking front area; If the fixation degree is semi-fixed sand, the soil nutrient level is medium, and the moisture condition is semi-arid, then the control space type of the target sand area is a sand fixation engineering area; If the fixation degree is fixed sand, the soil nutrient level is high, and the moisture condition is moist, then the control space type of the target sand area is sand-fixing vegetation area; If the fixation degree is semi-fixed sand, the soil nutrient level is medium, and the moisture condition is moist, then the control space type of the target sand area is a sand industry area; If the fixed degree is semi-fixed sand, the soil nutrient level is medium, the moisture condition is moist, and the distance between the target sand area and rivers and lakes is less than the set distance value, then the prevention and control space type of the target sand area is the sand-blocking river area; Calculating the amount of soil wind erosion in the target sandy area according to the vegetation coverage, the soil information and the meteorological information; Determining the water resource carrying capacity of the target sand area based on the water resource information; Determine measures for preventing and controlling sand according to the type of control space and the amount of wind erosion of soil in the target sandy area; Determine the bandwidth of sand prevention and control measures based on the water resource carrying capacity of the target sandy area; According to the water resource carrying capacity of the target sandy area, determine the bandwidth of the plant sand control belt and the bandwidth of the sand industry that can be developed, and adjust and optimize the bandwidth of the overall sand prevention and control measures; The width P0 of the basic plant sand control belt and the sand industry belt is pre-set; the overall sand control measures will consume water resources, and the water resource carrying capacity is taken as the total amount to establish the relationship between the water resource carrying capacity level and the bandwidth; For areas where water resources carrying capacity is fully met: water resources are sufficient, the width of the plant sand control belt and the width of the sand industry belt are increased by △P1; For areas with relatively satisfied water resource carrying capacity: water resources are sufficient, and the width of plant sand control belt and sand industry belt is moderately increased, the increase is △P2, and △P2<△P1; For areas where water resources carrying capacity is satisfied: water resources can basically meet demand, maintain a reasonable width of plant sand control belt and sand industry belt, and maintain the original bandwidth value of P0; For areas with insufficient water resources carrying capacity: water resources are limited, it is necessary to reduce the width of the plant sand control belt, give priority to the development of the sand industry, and the increase is -△P3; For areas where water resources carrying capacity is completely unsatisfied: water resources are seriously insufficient, the width of the plant sand control belt should be reduced as much as possible, and the focus should be on developing water-saving sand industry, with an increase of -△P4, and -△P4<-△P3; Determine the bandwidth P of sand prevention and control measures according to the water resources carrying capacity: P = P0 + (±△P n ), n=1~4; According to the sand prevention and control measures and the bandwidth of the sand prevention and control measures, sand prevention and control measures are deployed in the target sand area to regulate the ecological function of the target sand area.

2. The ecological function control method of sandy land sand prevention and control project according to claim 1 is characterized in that: The soil wind erosion amount in the target sandy area is calculated using the following formula: ； in, is the amount of soil wind erosion, is the key plot length, , is the maximum transport capacity of wind-blown sand, , is the downwind distance, is the meteorological factor determined based on meteorological information, is the soil erodibility factor determined based on soil information, is the soil crust factor determined based on soil information, is the surface roughness factor determined based on soil information, It is the vegetation factor determined based on vegetation coverage.

3. The ecological function control method of sandy land sand prevention and control project according to claim 1 is characterized in that: The water resource information includes multiple evaluation indicators; the multiple evaluation indicators are: rainfall, available surface water, available groundwater, evapotranspiration, vegetation ecological water demand, sand industry water demand, agricultural water demand, domestic water demand and industrial water demand; the water resource carrying capacity includes fully satisfied, relatively satisfied, satisfied, lacking and completely unsatisfied; According to the water resource information, the water resource carrying capacity of the target sand area is determined, specifically including: Perform weighted summation on multiple evaluation indicators to obtain the demand score; If the demand score is greater than the first demand threshold, the water resource carrying capacity is fully met; If the demand score is less than or equal to the first demand threshold and greater than the second demand threshold, the water resource carrying capacity is relatively satisfied; If the demand score is less than or equal to the second demand threshold and greater than the third demand threshold, the water resource carrying capacity is met; If the demand score is less than or equal to the third demand threshold and greater than the fourth demand threshold, the water resource carrying capacity is insufficient; If the demand score is less than or equal to the fourth demand threshold, the water resource carrying capacity is completely unsatisfied; The first demand threshold, the second demand threshold, the third demand threshold and the fourth demand threshold are all pre-set values, and the first demand threshold>the second demand threshold>the third demand threshold>the fourth demand threshold.

4. The ecological function control method of sandy land sand prevention and control project according to claim 1 is characterized in that: The sand prevention and control measures include: sand-blocking belts at the front of the Gaoli sand barrier, sand-fixing belts with low-standing sand barriers of Salix psammophila or wheat straw, sand-fixing protection belts with native vegetation, sand industry development belts, and belts combining plant engineering measures to prevent sand from entering the river; According to the type of prevention and control space and the amount of soil wind erosion in the target sandy area, the measures for preventing and controlling sandy desertification shall be determined, including: If the target sand area is a sand blocking frontier area, and , then the front sand-blocking belt of the Gaoli Sand Barrier is used; if the control space type of the target sand area is the front sand-blocking area, and , then the high-alpine sand barrier front sand-blocking belt and the Salix psammophila or wheat straw low-standing sand barrier sand-fixing belt are used; if the control space type of the target sand area is the sand-blocking front area, and , the density of the sand-blocking belt and the number of sand barriers will increase; If the target sand area is a sand fixation project area, and , then the low vertical sand barrier of Salix psammophila or wheat straw is used; if the control space type of the target sand area is a sand fixation engineering area, and , then increase the density of the Salix psammophila or wheat straw low vertical sand barrier sand fixation belt; if the control space type of the target sand area is a sand fixation engineering area, and , then adopt the low vertical sand barrier of Salix psammophila or wheat straw and chemical measures; If the target sand area is a sand-fixing vegetation area, and , then the native vegetation sand fixation protection belt is adopted; if the prevention and control space type of the target sand area is a sand fixation vegetation area, and , then increase the density of the native vegetation sand fixation protection belt; if the prevention and control space type of the target sand area is a sand fixation vegetation area, and , then adopt the native vegetation sand fixation protection belt and chemical measures; If the target sand area is a sand industry area, and , then the sand industry development zone is adopted; if the prevention and control space type of the target sand area is a sand industry zone, and , then increase the density of the sand industry development zone; if the prevention and control space type of the target sand area is a sand industry zone, and , then the intensity of sand industry development will be reduced; If the target sand area is a sand-blocking river area, and , then the plant engineering measures are combined with the sand-blocking belt; if the control space type of the target sand area is the sand-blocking belt, and , then increase the density of the plant engineering measures combined with the sand-blocking belt; if the control space type of the target sand area is the sand-blocking area, and , then increase the density of plant engineering measures; in, is the amount of soil wind erosion, is the pre-set minimum threshold of soil wind erosion, It is the preset maximum threshold of soil wind erosion.

5. An ecological function control device for sandy land sand prevention and control engineering, applied to the ecological function control method for sandy land sand prevention and control engineering according to any one of claims 1 to 4, characterized in that: The ecological function control device of the sandy land sand prevention and control project includes: Data acquisition module, used to obtain yellow sand information, vegetation coverage, soil information, meteorological information and water resource information of the target sand area; A control space classification module is connected to the data acquisition module and is used to determine the control space type of the target sand area according to the yellow sand information, the vegetation coverage, the soil information and the meteorological information; the control space type includes the sand blocking front area, the sand fixing engineering area, the sand fixing vegetation area, the sand industry area and the sand entering the river area; A wind erosion amount calculation module, connected to the data acquisition module, for calculating the soil wind erosion amount in the target sand area according to the vegetation coverage, the soil information and the meteorological information; A water resource analysis module, connected to the data acquisition module, for determining the water resource carrying capacity of the target sand area according to the water resource information; A measure screening module, connected to the control space classification module and the wind erosion amount calculation module respectively, for determining sand prevention and control measures according to the control space type and soil wind erosion amount of the target sand area; A bandwidth adjustment module, connected to the water resource analysis module, for determining the bandwidth of sand prevention and control measures according to the water resource carrying capacity of the target sand area; The ecological control module is connected to the measure screening module and the bandwidth adjustment module respectively, and is used to deploy sand control measures in the target sand area according to the sand control measures and the bandwidth of the sand control measures to regulate the ecological function of the target sand area.

6. 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 regulating the ecological function of a sand prevention and control project in sandy land according to any one of claims 1 to 4.

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