Land degradation management system and method based on ecological agriculture

Abstract

The invention discloses a land degradation management system and method based on ecological agriculture, relates to the technical field of land management, lays a foundation for subsequent realization of ecological restoration by performing regional division on a target drainage basin, analyzes to obtain degradation types of each region of the target drainage basin, and obtains restoration combinations of each crop at the same time. Then the degradation type of each region of the target drainage basin is matched with each crop restoration combination, so that the crop restoration combination of each region of the target drainage basin is obtained to solve the problem of land degradation in a targeted manner, the restoration efficiency and restoration effect of each region of the target drainage basin are improved, agricultural development of each region of the target drainage basin is ensured, and the economic benefit is increased. And finally, in the remediation process, monitoring each region of the target drainage basin, and then adjusting the crop remediation combination of each region of the target drainage basin, so that the remediation work adapts to the environmental change, and the completeness and rationality of the land degradation management system are ensured.

Description

Technical Field

[0001] The present application relates to the field of land management technology, and in particular to a land degradation management system and method based on ecological agriculture. Background Art

[0002] Due to the large differences in terrain in various parts of the basin, under the influence of different slopes and slope directions, the surface temperature, photosynthetically active radiation absorption coefficient and vegetation coverage rate of terrains with different slopes and slope directions all show large differences. As a result, the land degradation types and terrains in the Qinghai Lake Basin show certain regular characteristics. Traditional chemical or physical restoration methods have high restoration costs and are prone to secondary pollution. They also lack dynamic monitoring and adaptive adjustment mechanisms. Therefore, this application proposes a land degradation management system and method based on ecological agriculture.

[0003] Prior art, such as the invention patent with announcement number: CN118297365B, discloses a smart agricultural management system and method based on ecological agriculture. It includes obtaining historical data of the land to be managed; collecting and analyzing images and soil components of the land to be managed to determine the degree of soil erosion; calculating and analyzing the land degradation degrees in different regions based on the crop yields, soil component density data of previous years, and real-time soil component density data. The present invention analyzes the soil component density data, real-time land area data, and real-time vegetation coverage of the land to be managed through a data analysis module to determine the degree of soil erosion and the degree of land degradation in different regions, divides the land to be managed into grids, and gives different scores according to the degree of soil erosion and the degree of land degradation in different regions. According to the scoring results, suitable plant varieties are selected to realize the intelligent management of agricultural land, and a suitable restoration plan is selected to increase the cultivation life of agricultural land.

[0004] There are the following technical problems with the above scheme: 1. The current technology mainly obtains historical data of the land to be managed, and then determines the degree of soil erosion, and then analyzes and obtains the degree of land degradation in different regions. Finally, different scores are made according to the degree of soil erosion and the degree of land degradation in different regions, and suitable planting varieties are selected according to the scoring results. The current technology does not take into account the analysis of land degradation other than soil erosion. When the cause of land degradation is not soil erosion, but heavy metal pollution or land salinization, the current technology cannot analyze and obtain suitable planting plants to repair the degraded land. This level of neglect leads to the lack of accuracy and rationality of the current technology in practical applications.

[0005] 2. The current technology does not take into account the regional division problem when the agricultural land area is large. Reasonable regional division is conducive to the analysis of land degradation types and subsequent restoration management. Ignoring this aspect will lead to the limitations of the current technology. At the same time, the current technology does not take into account the subsequent continuous monitoring and adaptive adjustment of the land management process, which leads to the lack of perfection of the current technology. Summary of the invention

[0006] The purpose of this application is to provide a land degradation management system and method based on ecological agriculture, which solves the problems existing in the background technology.

[0007] To solve the above technical problems, the present application adopts the following technical solutions: In the first aspect, the present application provides a land degradation management system based on ecological agriculture, including: an information analysis module: used to analyze the land degradation types in various areas of the target watershed and to analyze various crop restoration combinations.

[0008] Matching module: used to match the degradation types of each area in the target watershed with each crop restoration combination, and then obtain the crop restoration combination of each area in the target watershed.

[0009] Restoration adjustment module: It is used to monitor various areas of the target basin during the restoration process, and then adjust the crop restoration combination in each area of ​​the target basin.

[0010] Preferably, the target watershed analysis unit is used to obtain basic characteristics of the target watershed, divide the target watershed into regions, and then obtain the regions of the target watershed, and then obtain the land degradation type of each region of the target watershed according to the land characteristic value analysis of each region of the target watershed.

[0011] Crop combination analysis unit: used to obtain various types of restoration plants corresponding to various historical land degradation types, and analyze various crop restoration combinations.

[0012] Preferably, the basic characteristics of the target watershed are obtained, and the target watershed is divided into regions to obtain the regions of the target watershed. The specific process is as follows: based on the basic characteristics of the target watershed, the slope direction of the terrain at each location in the target watershed is obtained, and the terrain with an azimuth of 337° to 360° and 0° to 22° is recorded as the north slope area, the terrain with an azimuth of 22° to 67° is recorded as the northeast slope area, the terrain with an azimuth of 67° to 112° is recorded as the east slope area, and the terrain with an azimuth of 112° to 157° is recorded as the south slope area. The terrain is recorded as the southeast slope area, the terrain with an azimuth of 157° to 202° is recorded as the south slope area, the terrain with an azimuth of 202° to 247° is recorded as the southwest slope area, the terrain with an azimuth of 247° to 292° is recorded as the west slope area, and the terrain with an azimuth of 292° to 337° is recorded as the northwest slope area. Based on this, the north slope areas, northeast slope areas, east slope areas, southeast slope areas, south slope areas, southwest slope areas, west slope areas and northwest slope areas of the target watershed are obtained.

[0013] Based on the basic characteristics of the target watershed, the slope of the terrain in each part of the target watershed is obtained, and the terrain with a slope of 0° to 5° is recorded as a flat slope area, the terrain with a slope of 5° to 15° is recorded as a gentle slope area, the terrain with a slope of 15° to 25° is recorded as a slope area, the terrain with a slope of 25° to 35° is recorded as a steep slope area, the terrain with a slope of 35° to 45° is recorded as a steep slope area, and the terrain with a slope greater than 45° is recorded as a dangerous slope area. Based on this, the flat slope areas, gentle slope areas, slope areas, steep slope areas, steep slope areas and dangerous slope areas of the target watershed are obtained.

[0014] The various slope shape areas and the various slope gradient areas of the target watershed are integrated to obtain the various slope shape and gradient areas of the target watershed, and the various slope shape and gradient areas of the target watershed are recorded as various target watershed areas.

[0015] Preferably, the land degradation type of each area of ​​the target watershed is obtained by analyzing the land characteristic values ​​of each area of ​​the target watershed. The specific process is as follows: the conductivity of each area of ​​the target watershed is obtained based on the land characteristic values ​​of the target watershed, and the area with conductivity greater than 5ds / m is recorded as a salinization area, thereby obtaining each salinization area of ​​the target watershed.

[0016] Based on the land characteristic values ​​of the target watershed, the contents of various heavy metals in various areas of the target watershed are obtained, and the contents of various heavy metals in a certain area of ​​the target watershed are compared with the set threshold values ​​of the contents of various heavy metals in the soil. If the content of a certain heavy metal in this area of ​​the target watershed is greater than the set threshold value of the content of such heavy metals in the soil, then the area of ​​the target watershed is recorded as a soil contaminated area. If the contents of various heavy metals in this area of ​​the target watershed are less than or equal to the set contents of various heavy metals in the soil, then the area of ​​the target watershed is recorded as a non-soil contaminated area, thereby obtaining various soil contaminated areas and non-soil contaminated areas of the target watershed.

[0017] Based on the land characteristics of the target watershed, the vegetation coverage rate of each area in the target watershed is obtained, and the vegetation coverage rate of each area is compared with the set vegetation coverage rate threshold. When the vegetation coverage rate of an area in the target watershed is less than the set vegetation coverage rate threshold, the area in the target watershed is recorded as a desertified area, otherwise, the area in the target watershed is recorded as a non-desertified area. Based on this, the desertified areas and non-desertified areas of the target watershed are obtained.

[0018] Preferably, the various types of restoration plants corresponding to various historical land degradation types are obtained, and various crop restoration combinations are obtained by analysis. The specific analysis process is as follows: the salt tolerance thresholds and restoration cycles of various salt-tolerant plants corresponding to various historical salinized lands are obtained from the data center, and then the priority selection evaluation coefficients of various salt-tolerant plants are obtained by analysis, and the salt-tolerant plants with the largest priority selection evaluation coefficients are obtained and used as the salinization area restoration plants. After the restoration cycle, the economic crop sea rice is introduced, and the salinization area restoration plants and sea rice are comprehensively recorded as the salinization area crop restoration combination.

[0019] The enrichment coefficients and restoration cycles of various heavy metals corresponding to various hyperaccumulators corresponding to various soil-contaminated lands in history were obtained from the data center, and then the priority evaluation coefficients of various heavy metal pollution corresponding to various hyperaccumulators were obtained by analysis. The hyperaccumulators with the largest priority evaluation coefficients of various heavy metal pollution corresponding to various hyperaccumulators were obtained and recorded as soil contaminated area restoration plants. After the restoration cycle, the economic crop energy sorghum was introduced, and the soil contaminated area restoration plants and energy sorghum were recorded as a heavy metal pollution area crop restoration combination.

[0020] The root depths and restoration periods of various deep-rooted soil-fixing plants corresponding to various historical desertified lands were obtained from the data center, and then the priority selection evaluation coefficients of various deep-rooted plants were analyzed. The deep-rooted soil-fixing plants with the largest priority selection coefficients were obtained and recorded as desertification area restoration plants. After the restoration period, the economic crop wolfberry was introduced, and the desertification area restoration plants and the economic crop wolfberry were combined and recorded as the desertification area crop restoration combination.

[0021] Preferably, the degradation type of each area in the target watershed is matched with each crop restoration combination to obtain the crop restoration combination for each area in the target watershed. The specific process is as follows: when an area in the target watershed is a salinized area, the slope and slope direction of the area in the target watershed are obtained, and for returning farmland to forest in steep slopes, sharp slopes and dangerous slopes, only the restoration plants in the salinization crop restoration combination are used to restore them, and crops are no longer planted; for flat slopes, gentle slopes and sloping areas, the salinization crop restoration combination is used to restore the land in the area of ​​the target watershed.

[0022] When an area in the target watershed is polluted by a certain type of heavy metal, the slope and slope direction of the area in the target watershed are obtained. For the conversion of steep slopes, abrupt slopes and dangerous slopes to forests, only the restoration plants in the heavy metal pollution restoration crop combination corresponding to this type of heavy metals are used to restore them, and no crops are planted. For flat slopes, gentle slopes and sloping areas, the heavy metal pollution restoration crop combination corresponding to this type of heavy metals is used to restore the area in the target watershed.

[0023] When the area in the target watershed is a desertified area, the slope and slope direction of the area in the target watershed are obtained. For steep slopes, sharp slopes and dangerous slopes, only the restoration plants in the desertification crop restoration combination are used for restoration, and no crops are planted. For flat slopes, gentle slopes and sloping areas, the desertification area restoration crop combination is used to restore the area in the target watershed. Based on this, the crop restoration combination for each area in the target watershed is obtained.

[0024] Preferably, the crop restoration combination of each area of ​​the target watershed is adjusted, and the specific process is as follows: compare the land characteristic values ​​of each area of ​​the target watershed in each preset period with the land characteristic values ​​of each area of ​​the target watershed corresponding to the area before restoration. If the land characteristic value of a certain area of ​​the target watershed in a preset period is greater than the land characteristic value of the area of ​​the target watershed before restoration, then the area of ​​the target watershed is recorded as an area to be adjusted, otherwise the area of ​​the target watershed is recorded as a non-area to be adjusted, and the various areas to be adjusted in the target watershed are obtained accordingly. When a certain area to be adjusted in the target watershed is a salinized area, various types of salt-tolerant plants corresponding to various historical salinized lands are obtained from the data center, and the salt-tolerant plants with the largest salt tolerance threshold among the various types of salt-tolerant plants are recorded as the restoration plants of the area to be adjusted, and the restoration plants are used to repair and adjust the area to be adjusted. Similarly, when a certain area to be adjusted in the target watershed is a heavy metal pollution area or a desertification area, it is repaired and adjusted according to this method.

[0025] In a second aspect, the present application provides a land degradation management method based on ecological agriculture, including: Step 1, information analysis: used to analyze the land degradation types in various areas of the target watershed and analyze various crop restoration combinations.

[0026] Step 2: Matching: It is used to match the degradation types of each area in the target watershed with each crop restoration combination, and then obtain the crop restoration combination of each area in the target watershed.

[0027] Step 3: Restoration Adjustment: This is used to monitor each area of ​​the target watershed during the restoration process, and then adjust the crop restoration combination in each area of ​​the target watershed.

[0028] The beneficial effects of the present application are as follows: 1. The present application provides a land degradation management system and method based on ecological agriculture, which lays a foundation for the subsequent ecological restoration by dividing the target watershed into regions, and analyzes the degradation type of each region in the target watershed, and obtains each crop restoration combination at the same time, and then matches the degradation type of each region in the target watershed with each crop restoration combination, and then obtains the crop restoration combination of each region in the target watershed to solve the land degradation problem in a targeted manner, which is beneficial to improving the restoration efficiency and restoration effect of each region in the target watershed, and ensures the agricultural development of each region in the target watershed. Finally, during the restoration process, each region in the target watershed is monitored, and then the crop restoration combination of each region in the target watershed is adjusted to achieve the adaptation of the restoration work to environmental changes, thereby ensuring the perfection and rationality of the land degradation management system.

[0029] 2. This application conducts a comprehensive analysis of the slope and aspect of the target watershed to obtain each area of ​​the target watershed. The slope and aspect have a great influence on the surface temperature, photosynthetically active radiation absorption coefficient and vegetation coverage. The regional division based on slope and aspect can significantly improve the scientificity, economy and sustainability of land degradation management, laying the foundation for the subsequent realization of precise ecological restoration. Then, the various types of restoration plants corresponding to the historical land degradation types are analyzed to obtain various crop restoration combinations. By comprehensively analyzing the restoration thresholds and restoration cycles of various plants to accurately match the land degradation types, the restoration efficiency can be effectively improved. At the same time, the crop restoration combination can be reasonably selected according to the restoration budget of the relevant work departments. Restoration plants with high thresholds and reasonable restoration cycles are conducive to reducing soil treatment costs and long-term soil maintenance costs. Finally, after the restoration is completed, the corresponding crops are planted according to the land degradation type, which is beneficial to the land utilization rate of each area of ​​the target watershed, and is also beneficial to the agricultural economic development of each area of ​​the target watershed.

[0030] 3. This application obtains the crop restoration combinations in each area of ​​the target basin by matching the degradation types of each area in the target basin with each crop restoration combination. The crop restoration combinations are accurately matched according to the land degradation types. Targeted solutions to soil problems are beneficial to the restoration efficiency and effect of each area in the target basin, while ensuring the agricultural development of each area in the target basin. While repairing the land, it also drives the development of the local agricultural economy, ensuring the accuracy and completeness of the restoration system.

[0031] 4. This application monitors each area of ​​the target watershed during the restoration process, and then adjusts the crop restoration combination in each area of ​​the target watershed, so as to adapt the restoration work to environmental changes and improve the restoration efficiency, while also ensuring the completeness and rationality of the land degradation management system. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] 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 or the description of the prior art 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.

[0033] Figure 1 This is a schematic diagram of the system structure connection for this application.

[0034] Figure 2 The figure is a flowchart of the implementation steps of the present application method. DETAILED DESCRIPTION

[0035] 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.

[0036] Reference Figure 1 As shown, the present application provides a land degradation management system based on ecological agriculture in the first aspect, comprising the following modules: an information analysis module: used to analyze the land degradation types in various areas of the target watershed and to analyze various crop restoration combinations.

[0037] In a specific example, the information analysis module includes: a target watershed analysis unit: used to obtain the basic characteristics of the target watershed, divide the target watershed into regions, and then obtain the regions of the target watershed, and then obtain the land degradation type of each region of the target watershed based on the land characteristic value analysis of each region of the target watershed.

[0038] It should be noted that the basic characteristics of the target watershed are obtained based on the topographic map.

[0039] It should be noted that the basic features include slope and slope direction.

[0040] It should be noted that land characteristic values ​​include electrical conductivity, heavy metal content and vegetation coverage.

[0041] It should be noted that the heavy metals include cadmium, mercury, arsenic, lead and chromium.

[0042] It should be noted that a conductivity meter is used to measure the conductivity of the soil leachate at each sampling point in a certain area of ​​the target watershed, and the average value of the measured conductivity is recorded as the conductivity of the area in the target watershed. The conductivity of each area in the target watershed is obtained based on this. Similarly, the spectral analysis method is used to obtain the heavy metal content in each area of ​​the target watershed.

[0043] It should be noted that the specific sampling location and sampling quantity of each sampling point are determined by the relevant staff and are not specifically restricted here.

[0044] It should be noted that the vegetation coverage of each area in the target watershed was obtained from the Global Change Science Research Data Publishing System.

[0045] Crop combination analysis unit: used to obtain various types of restoration plants corresponding to various historical land degradation types, and analyze various crop restoration combinations.

[0046] It should be noted that types of land degradation include land salinization, heavy metal pollution and land desertification.

[0047] In a specific example, the basic characteristics of the target watershed are obtained, the target watershed is divided into regions, and then the regions of the target watershed are obtained. The specific process is as follows: based on the basic characteristics of the target watershed, the terrain slopes of various locations in the target watershed are obtained, and the terrain with azimuths of 337° to 360° and 0° to 22° is recorded as the north slope area, the terrain with azimuths of 22° to 67° is recorded as the northeast slope area, the terrain with azimuths of 67° to 112° is recorded as the east slope area, and the terrain with azimuths of 112° to 157° is recorded as the east slope area. The terrain with an azimuth of 157° to 202° was recorded as the southeast slope area, the terrain with an azimuth of 202° to 247° was recorded as the southwest slope area, the terrain with an azimuth of 247° to 292° was recorded as the west slope area, and the terrain with an azimuth of 292° to 337° was recorded as the northwest slope area. Based on this, the north slope areas, northeast slope areas, east slope areas, southeast slope areas, south slope areas, southwest slope areas, west slope areas and northwest slope areas of the target watershed were obtained.

[0048] Based on the basic characteristics of the target watershed, the slope of the terrain in each part of the target watershed is obtained, and the terrain with a slope of 0° to 5° is recorded as a flat slope area, the terrain with a slope of 5° to 15° is recorded as a gentle slope area, the terrain with a slope of 15° to 25° is recorded as a slope area, the terrain with a slope of 25° to 35° is recorded as a steep slope area, the terrain with a slope of 35° to 45° is recorded as a steep slope area, and the terrain with a slope greater than 45° is recorded as a dangerous slope area. Based on this, the flat slope areas, gentle slope areas, slope areas, steep slope areas, steep slope areas and dangerous slope areas of the target watershed are obtained.

[0049] The various slope shape areas and the various slope gradient areas of the target watershed are integrated to obtain the various slope shape and gradient areas of the target watershed, and the various slope shape and gradient areas of the target watershed are recorded as various target watershed areas.

[0050] In a specific example, the land degradation type of each area of ​​the target watershed is obtained according to the land characteristic value analysis of each area of ​​the target watershed. The specific process is as follows: the conductivity of each area of ​​the target watershed is obtained based on the land characteristic value of the target watershed, and the area with conductivity greater than 5ds / m is recorded as a salinization area, and the salinization areas of the target watershed are obtained accordingly.

[0051] Based on the land characteristic values ​​of the target watershed, the contents of various heavy metals in various areas of the target watershed are obtained, and the contents of various heavy metals in a certain area of ​​the target watershed are compared with the set threshold values ​​of the contents of various heavy metals in the soil. If the content of a certain heavy metal in this area of ​​the target watershed is greater than the set threshold value of the content of such heavy metals in the soil, then the area of ​​the target watershed is recorded as a soil contaminated area. If the contents of various heavy metals in this area of ​​the target watershed are less than or equal to the set contents of various heavy metals in the soil, then the area of ​​the target watershed is recorded as a non-soil contaminated area, thereby obtaining various soil contaminated areas and non-soil contaminated areas of the target watershed.

[0052] It should be noted that the threshold values ​​for various heavy metal contents in the soil are set by the relevant departments themselves. For example, the threshold value for chromium content set in the "Soil Environmental Quality - Agricultural Land Soil Pollution Risk Control Standards (Trial)" is 850 mg / kg, and the threshold value for mercury content is 2.5 mg / kg.

[0053] Based on the land characteristics of the target watershed, the vegetation coverage rate of each area in the target watershed is obtained, and the vegetation coverage rate of each area is compared with the set vegetation coverage rate threshold. When the vegetation coverage rate of an area in the target watershed is less than the set vegetation coverage rate threshold, the area in the target watershed is recorded as a desertified area, otherwise, the area in the target watershed is recorded as a non-desertified area. Based on this, the desertified areas and non-desertified areas of the target watershed are obtained.

[0054] It should be noted that the vegetation coverage rate threshold is set by relevant staff. The higher the vegetation coverage rate threshold, the higher the vegetation coverage rate requirement for each area of ​​the target basin. For example, in order to increase the vegetation coverage rate in each area of ​​the target basin, the vegetation coverage rate can be set to 50%. No specific restrictions are made here.

[0055] In a specific example, the various types of restoration plants corresponding to various historical land degradation types are obtained, and various crop restoration combinations are obtained by analysis. The specific analysis process is as follows: the salt tolerance thresholds and restoration cycles of various salt-tolerant plants corresponding to various historical salinized lands are obtained from the data center, and then the priority selection evaluation coefficients of various salt-tolerant plants are obtained by analysis, and the salt-tolerant plants with the largest priority selection evaluation coefficients are obtained and used as the salinization area restoration plants. After the restoration cycle, the economic crop sea rice is introduced, and the salinization area restoration plants and sea rice are combined to be recorded as the salinization area crop restoration combination.

[0056] The enrichment coefficients and restoration cycles of various heavy metals corresponding to various hyperaccumulators corresponding to various soil-contaminated lands in history were obtained from the data center, and then the priority evaluation coefficients of various heavy metal pollution corresponding to various hyperaccumulators were obtained by analysis. The hyperaccumulators with the largest priority evaluation coefficients of various heavy metal pollution corresponding to various hyperaccumulators were obtained and recorded as soil contaminated area restoration plants. After the restoration cycle, the economic crop energy sorghum was introduced, and the soil contaminated area restoration plants and energy sorghum were recorded as a heavy metal pollution area crop restoration combination.

[0057] It should be noted that the enrichment coefficient is positively correlated with the ability of hyperaccumulator plants to repair heavy metal contaminated land.

[0058] The root depths and restoration periods of various deep-rooted soil-fixing plants corresponding to various historical desertified lands were obtained from the data center, and then the priority selection evaluation coefficients of various deep-rooted plants were analyzed. The deep-rooted soil-fixing plants with the largest priority selection coefficients were obtained and recorded as desertification area restoration plants. After the restoration period, the economic crop wolfberry was introduced, and the desertification area restoration plants and the economic crop wolfberry were combined and recorded as the desertification area crop restoration combination.

[0059] In a specific example, the preferred selection evaluation coefficients of various salt-tolerant plants, various hyperaccumulators, and various deep-rooted soil-fixing plants are obtained by analysis. The specific analysis process is as follows: the salt tolerance threshold and repair period of various salt-tolerant plants are respectively denoted as S i and Z i , where i represents the number of each type of salt-tolerant plant, i=1,2......I, I is any integer greater than 2, according to the calculation formula: The analysis results show that the preferential selection evaluation coefficient α of the i-th type of salt-tolerant plants i , where S′ and Z′ represent the salt tolerance standard value and the restoration cycle standard value of the salt-tolerant plants, respectively. 1 and a 2 They are respectively expressed as the weight factor corresponding to the salt tolerance threshold of the set salt-tolerant plants and the weight factor corresponding to the restoration period. Similarly, the priority selection coefficients of various hyperaccumulators and the priority selection coefficients of various deep-rooted native plants are obtained.

[0060] It should be noted that the salt tolerance thresholds of various salt-tolerant plants are normally distributed, and the middle value after the normal distribution is set as the salt tolerance standard value of the salt-tolerant plants. The standard value of the repair period is set in the same way as the salt tolerance threshold, so it will not be repeated here.

[0061] It should be noted that a 1 and a 2 are both greater than 0 and less than 1, a 1and a 2 The specific values ​​of are set by the relevant staff. For example, when the repair effect is more emphasized during the repair process, a 1 for a 2 for When more attention is paid to the repair efficiency during the repair process, a 2 for a 1 for No specific limitation is imposed here.

[0062] The enrichment coefficient and remediation period of each type of hyperaccumulator are recorded as and Wherein j represents the serial number of each type of hyperaccumulator, j=1,2...J, J is any integer greater than 2, k represents the serial number of each type of heavy metals enriched by the hyperaccumulator, k=1,2...K, K is any integer greater than 2, according to the calculation formula: The analysis obtained the priority evaluation coefficient of the kth type of heavy metal pollution corresponding to the jth type of hyperaccumulator, where G′ k and X′ k They are respectively represented by the set standard value of the enrichment factor and the standard value of the remediation period of the kth heavy metal, b 1 and b 2 They are respectively expressed as the weight factor corresponding to the set enrichment coefficient and the weight factor corresponding to the repair period.

[0063] It should be noted that the setting method of the standard value of the enrichment coefficient and the standard value of the restoration period of the kth category heavy metal is the same as the setting method of the standard value of the salt tolerance and the standard value of the restoration period of the salt-tolerant plants, so it will not be repeated here.

[0064] It should be noted that b 1 and b 2 Both greater than 0 and less than 1, b 1 and b 2 The setting method is the same as a 1 and a 2 The same, so no further description.

[0065] Matching module: used to match the degradation types of each area in the target watershed with each crop restoration combination, and then obtain the crop restoration combination of each area in the target watershed.

[0066] In a specific example, the degradation type of each area in the target watershed is matched with each crop restoration combination to obtain the crop restoration combination of each area in the target watershed. The specific process is as follows: when an area in the target watershed is a salinized area, the slope and slope direction of the area in the target watershed are obtained. For steep slopes, sharp slopes and dangerous slopes, only the restoration plants in the salinization crop restoration combination are used to restore them, and crops are no longer planted. For flat slopes, gentle slopes and sloping areas, the salinization crop restoration combination is used to restore the land in the area of ​​the target watershed.

[0067] When an area in the target watershed is polluted by a certain type of heavy metal, the slope and slope direction of the area in the target watershed are obtained. For the conversion of steep slopes, abrupt slopes and dangerous slopes to forests, only the restoration plants in the heavy metal pollution restoration crop combination corresponding to this type of heavy metals are used to restore them, and no crops are planted. For flat slopes, gentle slopes and sloping areas, the heavy metal pollution restoration crop combination corresponding to this type of heavy metals is used to restore the area in the target watershed.

[0068] When the area in the target watershed is a desertified area, the slope and slope direction of the area in the target watershed are obtained. For steep slopes, sharp slopes and dangerous slopes, only the restoration plants in the desertification crop restoration combination are used for restoration, and no crops are planted. For flat slopes, gentle slopes and sloping areas, the desertification area restoration crop combination is used to restore the area in the target watershed. Based on this, the crop restoration combination for each area in the target watershed is obtained.

[0069] Restoration adjustment module: It is used to monitor various areas of the target basin during the restoration process, and then adjust the crop restoration combination in each area of ​​the target basin.

[0070] In a specific example, the monitoring of each area of ​​the target watershed is represented by obtaining land characteristic values ​​of each area of ​​the target watershed being restored according to a preset period.

[0071] It should be noted that the preset period is shorter than the corresponding repair period, and the specific length and number of the preset periods are set by relevant staff members and are not specifically restricted here.

[0072] It should be noted that the method for obtaining the land characteristic values ​​is the same as the method for obtaining the land characteristic values ​​of each area in the target watershed before restoration, so it will not be repeated here.

[0073] In a specific example, the crop restoration combination in each area of ​​the target watershed is adjusted, and the specific process is as follows: the land characteristic values ​​of each area of ​​the target watershed in each preset period are compared with the land characteristic values ​​of each area of ​​the target watershed corresponding to the land characteristic values ​​before restoration. If the land characteristic value of a certain area of ​​the target watershed in a preset period is greater than the land characteristic value of the area of ​​the target watershed before restoration, then the area of ​​the target watershed is recorded as an area to be adjusted, otherwise, the area of ​​the target watershed is recorded as an area not to be adjusted, thereby obtaining the various areas to be adjusted in the target watershed.

[0074] When an area to be adjusted in the target watershed is a salinized area, various types of salt-tolerant plants corresponding to various historical salinized lands are obtained from the data center, and the salt-tolerant plants with the largest salt tolerance threshold among various types of salt-tolerant plants are recorded as the restoration plants of the area to be adjusted. The restoration plants are used to repair and adjust the area to be adjusted. Similarly, when an area to be adjusted in the target watershed is a heavy metal polluted area or a desertified area, it is repaired and adjusted according to this method.

[0075] Reference Figure 2 As shown, the present application provides a land degradation management procedure based on ecological agriculture in the second aspect, comprising the following steps: Step 1, information analysis: Information analysis module: used to analyze the land degradation types in various areas of the target watershed and analyze various crop restoration combinations.

[0076] Step 2: Matching: It is used to match the degradation types of each area in the target watershed with each crop restoration combination, and then obtain the crop restoration combination of each area in the target watershed.

[0077] Step 3: Restoration Adjustment: This is used to monitor each area of ​​the target watershed during the restoration process, and then adjust the crop restoration combination in each area of ​​the target watershed.

[0078] The present application provides a land degradation management system and method based on ecological agriculture, which lays a foundation for the subsequent ecological restoration by dividing the target watershed into regions, and analyzes the degradation type of each region in the target watershed, and obtains each crop restoration combination at the same time, and then matches the degradation type of each region in the target watershed with each crop restoration combination, and then obtains the crop restoration combination of each region in the target watershed to solve the land degradation problem in a targeted manner, which is beneficial to improving the restoration efficiency and restoration effect of each region in the target watershed, and ensures the agricultural development of each region in the target watershed. Finally, during the restoration process, each region in the target watershed is monitored, and then the crop restoration combination of each region in the target watershed is adjusted to achieve the adaptation of the restoration work to environmental changes, thereby ensuring the perfection and rationality of the land degradation management system.

[0079] The above contents are merely examples and explanations of the concept of the present application. The technicians in this technical field may make various modifications or additions to the described specific embodiments or replace them in a similar manner. As long as they do not deviate from the concept of the invention or exceed the scope defined in the present application, they should all fall within the protection scope of the present application.

Claims

1. A land degradation management system based on ecological agriculture, characterized in that: include: Information analysis module: used to analyze the land degradation types in each area of ​​the target watershed and analyze each crop restoration combination; Matching module: used to match the degradation types of each area in the target watershed with each crop restoration combination, and then obtain the crop restoration combination of each area in the target watershed; Restoration adjustment module: It is used to monitor various areas of the target basin during the restoration process, and then adjust the crop restoration combination in each area of ​​the target basin.

2. The land degradation management system based on ecological agriculture according to claim 1, characterized in that: The information analysis module includes: Target watershed analysis unit: used to obtain the basic characteristics of the target watershed, divide the target watershed into regions, and then obtain the regions of the target watershed, and then obtain the land degradation types of each region of the target watershed according to the land characteristic values ​​of each region of the target watershed; Crop combination analysis unit: used to obtain various types of restoration plants corresponding to various historical land degradation types, and analyze various crop restoration combinations.

3. The land degradation management system based on ecological agriculture according to claim 2 is characterized in that: The basic characteristics of the target watershed are obtained, and the target watershed is divided into regions, thereby obtaining each region of the target watershed. The specific process is as follows: Based on the basic characteristics of the target watershed, the terrain slopes of various locations in the target watershed are obtained, and the terrain with azimuths of 337° to 360° and 0° to 22° is recorded as the north slope area, the terrain with azimuths of 22° to 67° is recorded as the northeast slope area, the terrain with azimuths of 67° to 112° is recorded as the east slope area, the terrain with azimuths of 112° to 157° is recorded as the southeast slope area, the terrain with azimuths of 157° to 202° is recorded as the south slope area, the terrain with azimuths of 202° to 247° is recorded as the southwest slope area, the terrain with azimuths of 247° to 292° is recorded as the west slope area, and the terrain with azimuths of 292° to 337° is recorded as the northwest slope area, thereby obtaining the north slope areas, northeast slope areas, east slope areas, southeast slope areas, south slope areas, southwest slope areas, west slope areas, and northwest slope areas of the target watershed; Based on the basic characteristics of the target watershed, the slope of the terrain in each part of the target watershed is obtained, and the terrain with a slope of 0° to 5° is recorded as a flat slope area, the terrain with a slope of 5° to 15° is recorded as a gentle slope area, the terrain with a slope of 15° to 25° is recorded as a slope area, the terrain with a slope of 25° to 35° is recorded as a steep slope area, the terrain with a slope of 35° to 45° is recorded as a steep slope area, and the terrain with a slope greater than 45° is recorded as a dangerous slope area, thereby obtaining various flat slope areas, gentle slope areas, slope areas, steep slope areas, steep slope areas, and dangerous slope areas in the target watershed; The various slope shape areas and the various slope gradient areas of the target watershed are integrated to obtain the various slope shape and gradient areas of the target watershed, and the various slope shape and gradient areas of the target watershed are recorded as various target watershed areas.

4. The land degradation management system based on ecological agriculture according to claim 3 is characterized in that: The land degradation types of each area in the target watershed are obtained by analyzing the land characteristic values ​​of each area in the target watershed. The specific process is as follows: Based on the land characteristic values ​​of the target watershed, the conductivity of each area in the target watershed is obtained, and the area with conductivity greater than 5ds / m is recorded as a salinized area, thereby obtaining each salinized area in the target watershed; Based on the land characteristic values ​​of the target watershed, the contents of various heavy metals in various areas of the target watershed are obtained, and the contents of various heavy metals in a certain area of ​​the target watershed are compared with the set thresholds of the contents of various heavy metals in the soil. If the content of a certain heavy metal in the area of ​​the target watershed is greater than the set threshold of the content of such heavy metals in the soil, the area of ​​the target watershed is recorded as a soil contaminated area. If the contents of various heavy metals in the area of ​​the target watershed are less than or equal to the set contents of various heavy metals in the soil, the area of ​​the target watershed is recorded as a non-soil contaminated area, thereby obtaining various soil contaminated areas and non-soil contaminated areas of the target watershed; Based on the land characteristics of the target watershed, the vegetation coverage rate of each area in the target watershed is obtained, and the vegetation coverage rate of each area is compared with the set vegetation coverage rate threshold. When the vegetation coverage rate of an area in the target watershed is less than the set vegetation coverage rate threshold, the area in the target watershed is recorded as a desertified area, otherwise, the area in the target watershed is recorded as a non-desertified area. Based on this, the desertified areas and non-desertified areas of the target watershed are obtained.

5. The land degradation management system based on ecological agriculture according to claim 4 is characterized in that: The various types of restoration plants corresponding to various historical land degradation types are obtained, and various crop restoration combinations are obtained through analysis. The specific analysis process is as follows: Obtain the salt tolerance thresholds and restoration cycles of various salt-tolerant plants corresponding to various historical salinized lands from the data center, and then analyze and obtain the priority selection evaluation coefficients of various salt-tolerant plants, obtain the salt-tolerant plants with the largest priority selection evaluation coefficients, and use them as salinization area restoration plants. After the restoration cycle is over, introduce the economic crop sea rice, and record the salinization area restoration plants and sea rice as a combination of salinization area crop restoration plants; Obtain the enrichment coefficients and restoration cycles of various heavy metals corresponding to various hyperaccumulators corresponding to various soil-contaminated lands in history from the data center, and then analyze and obtain the priority evaluation coefficients of various heavy metal pollution corresponding to various hyperaccumulators, obtain the various hyperaccumulators with the largest priority evaluation coefficients of various heavy metal pollution corresponding to various hyperaccumulators, record them as soil contaminated area restoration plants, and introduce economic crop energy sorghum after the restoration cycle ends, and record the soil contaminated area restoration plants and energy sorghum as a combination of heavy metal pollution area crop restoration plants; The root depths and restoration periods of various deep-rooted soil-fixing plants corresponding to various historical desertified lands were obtained from the data center, and then the priority selection evaluation coefficients of various deep-rooted plants were analyzed. The deep-rooted soil-fixing plants with the largest priority selection coefficients were obtained and recorded as desertification area restoration plants. After the restoration period, the economic crop wolfberry was introduced, and the desertification area restoration plants and the economic crop wolfberry were combined and recorded as the desertification area crop restoration combination.

6. The land degradation management system based on ecological agriculture according to claim 5, characterized in that: The analysis obtains the priority selection evaluation coefficients of various salt-tolerant plants, the priority selection evaluation coefficients of various hyperaccumulators, and the priority selection evaluation coefficients of various deep-rooted soil-fixing plants. The specific analysis process is as follows: The salt tolerance threshold and repair cycle of each type of salt-tolerant plant are denoted as S i and Z i , where i represents the number of each type of salt-tolerant plant, i = 1, 2...I, I is any integer greater than 2, according to the calculation formula: The analysis results show that the preferential selection evaluation coefficient α of the i-th type of salt-tolerant plants i , where S′ and Z′ represent the salt tolerance standard value and the restoration cycle standard value of the salt-tolerant plants, respectively; a1 and a2 represent the weight factor corresponding to the salt tolerance threshold value and the restoration cycle of the salt-tolerant plants, respectively; similarly, the priority selection coefficients of various hyperaccumulators and the priority selection coefficients of various deep-rooted native plants are obtained; The enrichment coefficient and remediation period of each type of hyperaccumulator are recorded as and Wherein j represents the serial number of each type of hyperaccumulator, j=1,2...J, J is any integer greater than 2, k represents the serial number of each type of heavy metals enriched by the hyperaccumulator, k=1,2...K, K is any integer greater than 2, according to the calculation formula: The analysis obtained the priority evaluation coefficient of the kth type of heavy metal pollution corresponding to the jth type of hyperaccumulator, where G′ k and X′ k They respectively represent the set standard value of the enrichment coefficient and the standard value of the restoration period of the kth category heavy metal, and b1 and b2 respectively represent the weight factor corresponding to the set enrichment coefficient and the weight factor corresponding to the restoration period.

7. The land degradation management system based on ecological agriculture according to claim 6 is characterized in that: The degradation types of each area in the target watershed are matched with each crop restoration combination, and then the crop restoration combination of each area in the target watershed is obtained. The specific process is as follows: When a certain area in the target watershed is a salinized area, the slope and slope direction of the area in the target watershed are obtained. For the steep slope, abrupt slope and dangerous slope areas, only the restoration plants in the salinization crop restoration combination are used to restore them, and no crops are planted. For flat slope, gentle slope and sloping area, the salinization crop restoration combination is used to restore the land in the target watershed area. When a certain area in the target watershed is a certain type of heavy metal pollution area, the slope and slope direction of the area in the target watershed are obtained. For the conversion of steep slopes, abrupt slopes and dangerous slopes, only the restoration plants in the heavy metal pollution restoration crop combination corresponding to this type of heavy metal are used to restore them, and no crops are planted. For flat slopes, gentle slopes and sloping areas, the heavy metal pollution restoration crop combination corresponding to this type of heavy metal is used to restore the area in the target watershed; When the area in the target watershed is a desertified area, the slope and slope direction of the area in the target watershed are obtained. For steep slopes, sharp slopes and dangerous slopes, only the restoration plants in the desertification crop restoration combination are used for restoration, and no crops are planted. For flat slopes, gentle slopes and sloping areas, the desertification area restoration crop combination is used to restore the area in the target watershed. Based on this, the crop restoration combination for each area in the target watershed is obtained.

8. The land degradation management system based on ecological agriculture according to claim 7, characterized in that: The monitoring of each area of ​​the target watershed is represented by obtaining the land characteristic values ​​of each area of ​​the target watershed being restored according to a preset period.

9. The land degradation management system based on ecological agriculture according to claim 8, characterized in that: The crop restoration combination in each area of ​​the target watershed is adjusted, and the specific process is as follows: Compare the land characteristic values ​​of each area of ​​the target watershed in each preset period with the land characteristic values ​​of each area of ​​the corresponding target watershed before restoration. If the land characteristic value of a certain area of ​​the target watershed in a preset period is greater than the land characteristic value of the area of ​​the target watershed before restoration, then the area of ​​the target watershed is recorded as an area to be adjusted, otherwise, the area of ​​the target watershed is recorded as an area not to be adjusted, thereby obtaining each area to be adjusted in the target watershed; When an area to be adjusted in the target watershed is a salinized area, various types of salt-tolerant plants corresponding to various historical salinized lands are obtained from the data center, and the salt-tolerant plants with the largest salt tolerance threshold among various types of salt-tolerant plants are recorded as the restoration plants of the area to be adjusted. The restoration plants are used to repair and adjust the area to be adjusted. Similarly, when an area to be adjusted in the target watershed is a heavy metal polluted area or a desertified area, it is repaired and adjusted according to this method.

10. The method for land degradation management based on ecological agriculture according to claim 1, used to implement the land degradation management system based on ecological agriculture according to any one of claims 1 to 9, characterized in that: include: Step 1: Information analysis: used to analyze the land degradation types in each area of ​​the target watershed and analyze each crop restoration combination; Step 2: Matching: used to match the degradation types of each area in the target watershed with each crop restoration combination, and then obtain the crop restoration combination of each area in the target watershed; Step 3: Restoration Adjustment: This is used to monitor each area of ​​the target watershed during the restoration process, and then adjust the crop restoration combination in each area of ​​the target watershed.

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