Soil type map updating method, system, storage medium and device

Abstract

The present invention provides a soil type map updating method, system, storage medium, and device. The method includes: obtaining and analyzing geological data, topographic data, and remote sensing image data to obtain a preliminary soil type map; obtaining a second soil survey result map, analyzing the second soil survey result and the preliminary soil type result using a preset model to match them, thereby determining soil type spatial attributes; and obtaining an adjusted soil type map based on the soil type spatial attributes; obtaining a current land use attribute map and matching it with the adjusted soil type map to form a soil survey base map; arranging sampling points and profile points based on the soil survey base map, surveying regular survey areas and key survey areas based on the sampling points and profile points, and updating the soil survey base map based on the surveyed regular survey areas and the surveyed key survey areas to obtain a third soil type map. This application improves soil survey efficiency and saves survey costs.

Description

Technical Field

[0001] The present invention relates to the technical field of soil survey, and in particular to a soil type map updating method, system, storage medium and device. Background Art

[0002] my country has completed two soil surveys to date. The first, from 1958 to 1960, was guided by the principle of identifying cultivated land soil resources and summarizing farmers' experience in identifying, utilizing, and improving soil. The first national soil survey focused on three types of soil: paddy fields, drylands, and vegetable gardens. The survey covered soil types and their agricultural properties. The technical model for determining soil types was based on pedogenetic classification. Expert teams conducted field surveys, collected soil, and excavated profiles. Combined with farmers' customary nomenclature, these surveys were systematically standardized and organized into a soil classification system. This work initially clarified the details of cultivated land soils and resulted in the agricultural soil classification system, agricultural zoning, cultivated land resource distribution, soil fertility, and soil improvement maps. However, due to the limitations of the technology at the time, the survey was conducted without a corresponding base map, and no systematic and accurate spatial results were produced. Instead, the regional distribution of each soil type was described in text.

[0003] In the 20 years after the first national soil census, land use intensity and production levels continued to increase, accompanied by soil utilization problems. The survey results of the first national soil census could no longer guide agricultural production, so a second national soil census was carried out between 1979 and 1984. During this period, in addition to the original cultivated land, the census also expanded to include soils in forests, pastoral areas, and undeveloped areas. The survey content included the type, distribution, area, physical and chemical properties, production performance, and soil fertility of soil resources. The technical model for determining soil types was based on soil occurrence classification, introducing the ideas of diagnostic layers and diagnostic characteristics, and gradually aligning with the world's advanced soil classification systems. Through this work, a large amount of soil science data was obtained, and a "five-level" soil classification system was established. The quantity, distribution, fertility, physical and chemical properties, production performance, and major soil obstacles affecting agricultural production of soil resources across the country were identified, and a national 1:50,000 scale soil map was formed.

[0004] Nearly 40 years have passed since the Second National Soil Survey. Current agricultural production methods emphasize ensuring food security and developing green, ecological agriculture. Over the past 40 years, rapid social development and technological advancements have resulted in diverse spatiotemporal data across various industries. Given this, the Second National Soil Survey's results, due to limitations such as age, insufficient basic data, mapping methods and accuracy, and insufficient survey coverage, cannot meet current agricultural production requirements. The Third National Soil Survey is imperative and a crucial survey of national conditions and strength. It is crucial for comprehensively and accurately obtaining basic data on soil quality, properties, and utilization, improving soil resource protection and utilization, implementing the strictest arable land protection and land conservation systems, ensuring national food security, advancing ecological progress, scientifically planning, rationally utilizing, and effectively protecting arable land, and promoting the comprehensive, coordinated, and sustainable development of the economy and society. According to the requirements of the "Notice on Carrying out the Third National Soil Census" issued by my country on February 16, 2022, the soil census work must be completed in full from 2022 to 2025 and the census results must be formed. If the third national soil census is carried out in accordance with the traditional census method, it will inevitably affect the efficiency of the census and make it impossible to complete the census work according to the notification nodes and with guaranteed quality and quantity. Summary of the Invention

[0005] Based on this, the purpose of the present invention is to provide a soil type map updating method, system, storage medium and device to solve the technical problem of low efficiency of soil survey methods in the prior art.

[0006] One aspect of the present invention provides a soil type map updating method, comprising:

[0007] Obtain geological data, topographic data, and remote sensing image data and perform data analysis, and spatially combine the analyzed data to obtain a preliminary soil type map;

[0008] Obtaining a second soil survey result map, and obtaining a second soil survey result based on the second soil survey result map, obtaining a preliminary soil type result based on the preliminary soil type map, analyzing the second soil survey result and the preliminary soil type result using a preset model to match the soil type of the preliminary soil type map with the second soil survey type, thereby determining the soil type spatial attributes of the preliminary soil type map based on the matching result, and obtaining an adjusted soil type map based on the soil type spatial attributes;

[0009] Obtaining a current land use attribute map and matching it with the adjusted soil type map to form a soil survey base map, wherein the soil survey base map includes regular survey areas and key survey areas;

[0010] Sampling points and profile points are arranged according to the soil survey base map, the regular survey area and the key survey area are surveyed according to the sampling points and the profile points respectively, and the soil survey base map is updated according to the regular survey area and the key survey area after the survey to obtain a third soil type map.

[0011] The above-mentioned soil type map updating method obtains a preliminary soil type map by performing data analysis on geological data, topographic data and remote sensing image data, conducts basic surveys and forms results based on the existing data, makes full use of the existing data, saves survey costs and improves the accuracy of survey results; determines the soil type spatial attributes of the preliminary soil type map based on the matching results of the soil types in the preliminary soil type map with the types of the second soil survey, thereby obtaining an adjusted soil type map based on the soil type spatial attributes, and then matches it with the current land use attribute map to form a soil survey base map, the soil survey base map includes regular survey areas and key survey areas, and surveys are conducted on the regular survey areas and key survey areas in the soil survey base map respectively, with a clear and definite work focus; finally, the soil survey base map is updated based on the survey results to obtain a third soil type map, thereby improving soil survey efficiency and saving survey costs.

[0012] In addition, the soil type map updating method according to the present invention may also have the following additional technical features:

[0013] Furthermore, the step of determining the soil type spatial attributes of the preliminary soil type map according to the matching results includes:

[0014] When the preliminary soil type can be completely matched with the second soil survey type, the soil type is determined based on the matching result;

[0015] When the preliminary soil type cannot be completely matched with the second soil survey type, the second soil survey result map is coordinated with the preliminary soil type map, and the soil type is determined according to the coordination result;

[0016] When the preliminary soil type cannot be matched with the second soil survey type at all, a pending area is delineated and the pending area serves as the key survey area in the actual survey work.

[0017] Furthermore, the steps of obtaining geological data, topographic data, and remote sensing image data, performing data analysis, and spatially combining the analyzed data to obtain a preliminary soil type map include:

[0018] Acquiring geological data, extracting stratum attributes and lithology based on the geological data, and generating a stratum-to-soil parent material conversion table and a stratum-to-lithology conversion table based on the attributes and lithology, respectively; and converting the geological map into a parent material distribution map and a lithology distribution map based on the stratum-to-soil parent material conversion table and the stratum-to-lithology conversion table;

[0019] Acquiring terrain data, the terrain data including a plurality of terrain factors, the terrain factors including elevation, slope, and aspect, and analyzing the terrain factors using a preset model to obtain an elevation distribution map, a slope distribution map, and a slope aspect distribution map;

[0020] Acquire remote sensing image data and analyze vegetation coverage, vegetation type, and land use type to obtain vegetation coverage distribution maps, vegetation type distribution maps, and land use distribution maps;

[0021] The parent material distribution map, elevation distribution map, slope distribution map, aspect distribution map, vegetation cover distribution map, vegetation type distribution map and land use distribution map are analyzed and superimposed in combination with the preset model, and the analysis and superposition results are spatially combined to obtain a preliminary soil type map.

[0022] Furthermore, the steps of spatially combining the analyzed data to obtain a preliminary soil type map include:

[0023] Based on the principles of soil genetics, the analyzed data were spatially combined with variable factors to obtain a preliminary soil type map. The variable factors included parent material, topography, organisms, climate, and time.

[0024] Furthermore, the steps of obtaining preliminary soil type results based on the preliminary soil type map, analyzing the second soil survey results and the preliminary soil type results using a preset model to match the soil types of the preliminary soil type map with the second soil survey types, and then determining the soil type spatial attributes of the preliminary soil type map based on the matching results include:

[0025] Obtain the place names in the second soil survey result map according to the second soil survey result map;

[0026] The local nomenclature is converted into a national standard nomenclature to obtain a national standard nomenclature soil map;

[0027] Combined with the national standard soil naming map, the preliminary soil type map is analyzed by a preset model to determine spatial attributes.

[0028] Furthermore, in the step of obtaining the current land use attribute map:

[0029] Paddy fields, agricultural, forestry and pasture lands, and unused lands are planned as census areas;

[0030] The built-up land and some water areas are planned as non-census areas, which are areas whose types cannot be surveyed.

[0031] Furthermore, the steps of respectively surveying the conventional survey area and the key survey area according to the sampling points and the profile points include:

[0032] The number of sampling points in key census areas is greater than that in regular census areas.

[0033] Another aspect of the present invention provides a soil type map updating system, comprising:

[0034] The acquisition module is used to acquire geological data, topographic data and remote sensing image data and perform data analysis, and spatially combine the analyzed data to obtain a preliminary soil type map;

[0035] an analysis module, configured to obtain a second soil survey result map, obtain a second soil survey result based on the second soil survey result map, obtain a preliminary soil type result based on the preliminary soil type map, analyze the second soil survey result and the preliminary soil type result using a preset model to match the soil type of the preliminary soil type map with the soil type of the second soil survey, thereby determining a soil type spatial attribute of the preliminary soil type map based on the matching result, and obtain an adjusted soil type map based on the soil type spatial attribute;

[0036] A matching module is used to obtain a current land use attribute map and match it with the adjusted soil type map to form a soil survey base map, wherein the soil survey base map includes regular survey areas and key survey areas;

[0037] An updating module is used to arrange sampling points and profile points according to the soil survey base map, survey the regular survey areas and the key survey areas according to the sampling points and the profile points, and update the soil survey base map according to the regular survey areas and the key survey areas after the survey to obtain a third soil type map.

[0038] Another aspect of the present invention provides a computer-readable storage medium having a computer program stored thereon, which implements the soil type map updating method as described above when the program is executed by a processor.

[0039] On the other hand, the present invention also provides a data processing device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the soil type map updating method as described above when executing the program. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 This is a flow chart of the soil type map updating method according to the first embodiment of the present invention;

[0041] Figure 2 This is a system block diagram of a soil type map updating system in a second embodiment of the present invention.

[0042] The following specific embodiments will further illustrate the present invention in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0043] To facilitate understanding of the present invention, the present invention will be described more fully below with reference to the accompanying drawings. The drawings illustrate several embodiments of the present invention. However, the present invention may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the present invention.

[0044] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one skilled in the art to which this invention pertains. The terms used in this specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0045] The current work is still to complete the update through the survey method of using points to represent the whole. The existing census method is to rely on the results of the second census as the survey base map for the update survey (the second census: the second soil census), but the results of the second census are limited by the technical conditions at the time and the completeness and accuracy of the basic data. Its results are also not accurate, and the boundaries of its soil types are arbitrary. If the update is completed on this basis, the results are still not accurate; therefore, the results of the second census cannot be used as the only base map, but can only be used as an important reference for making the base map.

[0046] The solution of the present invention attempts to establish a multi-source data update model of "geology + topography + imagery + third soil survey + second soil census" based on the current existing spatial data results and the principle of soil occurrence classification, theoretically updating the soil type results of the second soil census to form a survey base map, and then combining the field census to adjust the base map to form the final third soil census results.

[0047] The five major factors in soil formation are parent material, topography, organisms, climate, and time. Strata rocks soften and loosen due to crustal movement, gravity, glaciers, rain, and wind, and are deposited in situ or migrated by external forces to form parent material. Through the long-term life and growth of plants and animals, parent material forms a relatively stable soil structure. Therefore, geological distribution, topographic distribution, vegetation distribution, and human use are all fundamental data for producing base maps for soil surveys. my country currently has high-precision geological maps, current land use maps, topographic maps, and imagery data. In today's era of rapid information technology development, leveraging existing data for surveys is an inevitable choice for advancing work in a scientific, accurate, and efficient manner, and an effective way to accomplish as much work as possible within limited costs.

[0048] Because the soil formation process is an extremely long process, and the solution of the present invention is aimed at updating the results of county-level soil surveys, at the county scale, climatic conditions do not vary much. Therefore, time and climate factors are not taken into consideration. Based on the three soil formation factors of parent material, topography, and organisms, combined with the existing second census results and land use data, five major data sources are used to build a model and produce a soil survey base map. Ultimately, in actual work, the final survey results are formed through field investigations, sampling, excavation of profiles, and other work.

[0049] Example 1

[0050] See also Figure 1 , which shows a soil type map updating method in a first embodiment of the present invention, the method includes steps S101 to S104:

[0051] S101, obtaining geological data, topographic data, and remote sensing image data and performing data analysis, and spatially combining the analyzed data to obtain a preliminary soil type map.

[0052] In this example, based on the principles of soil genetics, and taking into account factors such as parent material, topography, biology, climate, and time, the Python GIS spatial analysis module arcpy was used to spatially match and analyze parent material distribution maps, elevation distribution maps, slope and aspect distribution maps, vegetation cover distribution maps, vegetation type distribution maps, and land use distribution maps. The simulation analysis approach is: soil parent material under different land use patterns, at different altitudes, through long-term specific climate influences, and under the accumulation of certain surface plants over the years, may form a certain type of soil. Taking the Late Triassic Fucheng Sequence as an example, the detailed steps are as follows:

[0053] Step 1: Check geological information: Based on geological information, determine the soil parent material, parent material age, and parent material lithology. The rock of the Fucheng sequence stratum in the late Triassic is fine-grained biotite-bearing granite, which is about 200 million years old. After long-term weathering, it can form weathered products with granite as the main parent material. Due to the gneissic lithology of granite, the weathered soil is sandy.

[0054] Step 2: Look at the climate: Because its main component is silica-based rock, under long-term subtropical hot and humid climate conditions, after continuous leaching by rainwater, the soil undergoes a process of desiliconization and iron-aluminum enrichment, forming ferroaluminous soil;

[0055] Step 3: Look at the terrain altitude: The thermal conditions at high altitudes are poorer than those at low altitudes, so the climate at the top of the mountain can form humid and warm ferroalloy soils, while the climate at the bottom of the mountain can form humid and hot ferroalloy soils;

[0056] Step 4: Observe the organisms: Based on the image identification, the vegetation coverage and lushness of this area are at a high level, proving that the area has been growing lush plants stably for a long time. During the long-term stable plant growth process, the soil develops healthily and can form typical red soil. The corresponding high-altitude area forms typical yellow soil, and in the transition zone between red soil and yellow soil, yellow-red soil is formed.

[0057] Specifically, geological data is acquired, and stratigraphic attributes and lithologies are extracted from the data. A stratigraphic-to-pedogenic parent material conversion table and a stratigraphic-to-lithology conversion table are generated based on the attributes and lithologies, respectively. Based on these tables, the geological map is converted into a parent material distribution map and a lithology distribution map. Taking a 1:50,000 geological map as an example, stratigraphic attributes and lithologies are extracted to generate a stratigraphic-to-pedogenic parent material conversion table and a stratigraphic-to-lithology conversion table. Based on these tables, the geological map is converted into a parent material distribution map and a lithology distribution map.

[0058] Obtain terrain data, which includes multiple terrain factors, including elevation, slope, and aspect. Analyze terrain factors using a preset model to obtain elevation distribution maps, slope distribution maps, and aspect distribution maps. Based on a 30m*30m terrain map, analyze terrain factors such as elevation, slope, and aspect using ArcGIS to generate elevation distribution maps, slope distribution maps, and aspect distribution maps.

[0059] Acquire remote sensing image data and analyze vegetation coverage, vegetation type, and land use type to obtain vegetation coverage distribution map, vegetation type distribution map, and land use distribution map; based on remote sensing images, analyze vegetation type, vegetation coverage, and land use type through ENVI.

[0060] Combined with the preset model analysis, the parent material distribution map, elevation distribution map, slope distribution map, aspect distribution map, vegetation cover distribution map, vegetation type distribution map and land use distribution map are superimposed, and the analysis and superposition results are spatially combined to obtain a preliminary soil type map.

[0061] S102. Obtain a second soil survey result map, and obtain the second soil survey results based on the second soil survey result map, obtain preliminary soil type results based on the preliminary soil type map, analyze the second soil survey results and the preliminary soil type results using a preset model to match the soil types of the preliminary soil type map with the second soil survey types, thereby determining the soil type spatial attributes of the preliminary soil type map based on the matching results, and obtaining an adjusted soil type map based on the soil type spatial attributes.

[0062] In this embodiment, the local names in the second soil survey result map are obtained based on the second soil survey result map; the local names are converted to national standard names to obtain a national standard named soil map; and in combination with the national standard named soil map, the preliminary soil type map is analyzed using a preset model to determine spatial attributes.

[0063] In the matching results, when the preliminary soil type can completely match the second soil survey type, the soil type is determined based on the matching results; when the preliminary soil type cannot completely match the second soil survey type, the second soil survey result map and the preliminary soil type map are coordinated, and the soil type is determined based on the coordination results; when the preliminary soil type cannot completely match the second soil survey type, a pending area is delineated, and the pending area is used as the key survey area in the actual survey work.

[0064] Specifically, if the soil type cannot be fully matched to the second soil survey type, the attributes of the two maps will be comprehensively considered and the soil type will be determined complementary to each other. The specific situations are as follows: (1) The soil type matches but the subtype does not match. Because the second soil survey did a lot of cross-section work, the subtype diagnostic characteristics are relatively clear, and the subtype type of the second soil survey is more reliable, so in this case, the subtype of the second soil survey shall prevail; (2) The soil type and subtype match but the soil genus does not match. Because the technical conditions during the second soil survey were limited and the parent material distribution map was very rough, the soil genus level shall be based on the derivation result. If the soil type cannot be fully matched to the second soil survey type, if the derivation result is paddy soil, then the paddy soil shall prevail. If it is natural soil, it shall be regarded as a pending area and a key survey area in the actual survey work.

[0065] S103. Obtain a current land use attribute map and match it with the adjusted soil type map to form a soil survey base map. The soil survey base map includes regular survey areas and key survey areas.

[0066] On the basis of the adjusted soil type map, survey areas are set up for various matching results: (1) For completely matched soil types, regular survey areas are set up, and field surveys are carried out in accordance with the survey technical specifications; (2) For incompletely matched soil types, sub-class mismatch areas are set up as sub-class review areas, and for soil genus mismatch areas, soil genus review areas are set up. Based on the work requirements of regular survey areas, survey indicators for reviewing sub-classes and soil genus are formulated; (3) For completely mismatched areas, key survey areas are set up. On the basis of regular surveys, profile survey points are set up, profiles are dug, and soil types are clarified.

[0067] S104. Arrange sampling points and profile points according to the soil survey base map, survey the regular survey areas and the key survey areas respectively according to the sampling points and profile points, and update the soil survey base map according to the regular survey areas and the key survey areas after the survey to obtain a third soil type map.

[0068] Assign work tasks, reasonably arrange sampling points and profile points, conduct censuses in routine census areas in accordance with national regulations, add sample points for key census areas, so that the number of sample points in key census areas is greater than the number of sample points in routine census areas, fully verify contradictions and conflicts through full-area census, and finally form an updated third soil type map.

[0069] In order to further understand the present invention, the entire technical process is described in detail from the two aspects of complete matching and complete incompatibility, taking the Late Triassic Fucheng Sequence and the Jurassic Shuibei Formation as examples, as follows:

[0070] (1) The rocks of the Late Triassic Fucheng Sequence are fine-grained biotite-bearing granite. It is located in the highest mountain of Shanggao County, with a maximum altitude of about 1,000 meters. The corresponding technical solutions for this area are:

[0071] Part 1:

[0072] First, in the stratum-to-pedogenic parent material conversion table, the conversion relationship is the Late Triassic Fucheng Sequence to granite-dominated weathered materials, and in the stratum-to-lithology conversion table, the conversion relationship is the Late Triassic Fucheng Sequence to hemp sand;

[0073] Second, the altitude of the area is 100-1000 meters, with a steep slope. The climate is subtropical at the bottom of the mountain between 100-500 meters, subtropical on the mountainside between 500-800 meters, and subtropical on the mountaintop above 800 meters.

[0074] Third, in the remote sensing image, the model judges that the area has lush vegetation, perennial plant growth, and is suitable for good development of the soil surface;

[0075] Fourthly, during the Second National Census, the soil types in this area included acidic crystalline rock red soil, acidic crystalline rock yellow red soil, and acidic crystalline rock yellow soil, which were converted into national standard names of hemp sandy red soil, hemp sandy yellow red soil, and hemp sandy yellow soil.

[0076] Point 5: The current land use situation in this area is mostly tree forest.

[0077] Part II:

[0078] Summarizing the first part, the table is as follows:

[0079]

[0080] The parent materials of red soils primarily include Quaternary red clay and weathered products of Tertiary red sandstone, granite, phyllite, basalt, and limestone. Yellow soils can develop on a variety of parent materials, primarily granite and sandstone shale; in addition, there are also weathered products of Quaternary red clay and limestone.

[0081] As shown in the table above, the late Triassic Fucheng Sequence is composed of fine-grained, biotite-bearing granite. Long-term weathering has resulted in granite-based weathering products. These are primarily sandy, acidic (SiO₂ > 66%), and light flesh-colored. Given the subtropical warm and humid climate, the soils in this area are prone to iron-aluminization, most likely forming red soils. Based on the vertical zoning patterns of soils in the southern subtropics, yellow soils can form at higher altitudes, while yellow-red soils can form in the transition zone between yellow and red soils.

[0082]

[0083] Part III:

[0084] The preliminary results were adjusted and the deduced preliminary results were spatially matched with the second census results. The results showed that the deduced results and the second census results were spatially consistent, meeting the requirement of "one-to-many results can fully match the second census soil type", and the soil type of the area can be determined.

[0085] Part 4:

[0086] The soil types at all levels in this area were successfully matched and it was set as a regular survey area.

[0087] (II) The Jurassic Shuibei Formation rock strata are feldspar quartz coarse sandstone, sandy shale, and carbonaceous shale, distributed in low hills below 150 meters above sea level. The derivation is also carried out according to the following technical process:

[0088] Part 1:

[0089] First, in the stratum-to-pedogenic parent material conversion table, the conversion relationship is Jurassic Shuibei Formation-mainly weathered sandstone and shale, and in the stratum-to-lithology conversion table, the conversion relationship is Jurassic Shuibei Formation-sand and mud.

[0090] Second, the elevation of the area is mostly below 100 meters, with a few between 100-200 meters, with a small slope, and a subtropical climate;

[0091] Third, remote sensing images can be used to identify lush vegetation, perennial crop growth, and good soil surface development.

[0092] Point 4: During the Second National Census, the soil type in this area was classified as brown lime soil, and the corresponding national standard nomenclature remained unchanged;

[0093] Point 5: The current land use situation in this area is mostly tree forests, with a few gardens and cultivated land.

[0094] Part II:

[0095] Summarizing the first part, the table is as follows:

[0096]

[0097] The parent materials of red soils primarily include Quaternary red clay and weathered products such as Tertiary red sandstone, granite, phyllite, basalt, and limestone. Limestone refers to soils developed from limestone parent material in the subtropical regions of southern my country. Limestones generally have a heavy, clayy texture and exhibit varying degrees of lime foam on cross-sections. The parent rocks of limestone are primarily limestone composed primarily of calcite and aragonite, followed by dolomite-dominated dolomite and other transitional carbonate rocks.

[0098] As shown in the table above, the Jurassic Shuibei Formation is composed of feldspar-quartz coarse sandstone, sandy shale, and carbonaceous shale. Long-term weathering has resulted in weathered products primarily composed of sandstone and shale. Lithology is primarily sandy and argillaceous, with acidic lithology and a reddish color. Given the subtropical warm and humid climate, the soils in this area are prone to iron-aluminization, most likely forming red soils. The region boasts complete vegetation coverage and well-developed soils. Under natural conditions, this can form a typical red soil subtype with high fertility, with sandy and argillaceous typical red soils belonging to the lithology category. However, after long-term agricultural activity, artificial soil formation can result in paddy soils. Depending on the altitude and slope of the area, this can form a nutrient-rich paddy soil subtype, with nutrient-rich sandy and muddy soils belonging to the lithology category.

[0099]

[0100] Part III:

[0101] The preliminary results were adjusted and the preliminary results were deduced to match the second census results spatially. The results showed two situations: (1) the deduced result "red soil" and the second census result "lime soil" did not match in space, satisfying the "complete mismatch, then it is regarded as a pending area"; (2) the deduced results "paddy soil" and "lime soil" did not match, so the paddy soil was used as the standard.

[0102] Part 4:

[0103] According to the above steps, the regular census area and key census area of the area were formed.

[0104] Combining the above two examples, we can form regular survey areas (soil survey areas formed by the Fucheng sequence in the late Triassic) and key survey areas (soil survey areas formed by the Shuibei Formation in the Jurassic), on which the soil survey base map of the fifth part is formed.

[0105] On the one hand, this application makes full use of the existing achievements of the geological department, the natural resources department, and the surveying and mapping department. The huge amount of manpower, material resources, and financial resources have been spent on basic surveys and the results have been produced. Making full use of these data can save survey costs while improving the accuracy of survey results.

[0106] On the other hand, this application is based on the principles of soil genesis, reconstructing the spatial distribution patterns of soil types from multiple scales including parent material, topography, biology, climate, and time. It fully calibrates the results of the second census and distinguishes the survey objects based on the current land use status, forming regular census areas and key census areas, with a clear and specific focus.

[0107] Furthermore, the technical solution of the present application is highly operable. Specifically, the present invention has successfully produced a census working base map using the data of Shanggao County.

[0108] In summary, the soil type map updating method in the above embodiment of the present invention obtains a preliminary soil type map by performing data analysis on geological data, topographic data, and remote sensing image data, conducts basic surveys based on the existing data, and forms results, thereby fully utilizing the existing data, saving survey costs, and improving the accuracy of survey results. The soil type spatial attributes of the preliminary soil type map are determined based on the matching results of the soil types in the preliminary soil type map with the types of the second soil survey, thereby obtaining an adjusted soil type map based on the soil type spatial attributes, and then matching it with the current land use attribute map to form a soil survey base map. The soil survey base map includes regular survey areas and key survey areas. The regular survey areas and key survey areas in the soil survey base map are surveyed separately, and the work focus is clear and definite. Finally, the soil survey base map is updated according to the survey results to obtain a third soil type map, thereby improving soil survey efficiency and saving survey costs.

[0109] Example 2

[0110] See also Figure 2 , shown is a soil type map updating system in a second embodiment of the present invention, comprising:

[0111] The acquisition module is used to acquire geological data, topographic data and remote sensing image data and perform data analysis, and spatially combine the analyzed data to obtain a preliminary soil type map;

[0112] an analysis module, configured to obtain a second soil survey result map, obtain a second soil survey result based on the second soil survey result map, obtain a preliminary soil type result based on the preliminary soil type map, analyze the second soil survey result and the preliminary soil type result using a preset model to match the soil type of the preliminary soil type map with the soil type of the second soil survey, thereby determining a soil type spatial attribute of the preliminary soil type map based on the matching result, and obtain an adjusted soil type map based on the soil type spatial attribute;

[0113] A matching module is used to obtain a current land use attribute map and match it with the adjusted soil type map to form a soil survey base map, wherein the soil survey base map includes regular survey areas and key survey areas;

[0114] An updating module is used to arrange sampling points and profile points according to the soil survey base map, survey the regular survey areas and the key survey areas according to the sampling points and the profile points, and update the soil survey base map according to the regular survey areas and the key survey areas after the survey to obtain a third soil type map.

[0115] In summary, the soil type map updating system in the above embodiment of the present invention obtains a preliminary soil type map by performing data analysis on geological data, topographic data, and remote sensing image data, conducts basic surveys based on the existing data, and forms results, thereby fully utilizing the existing data, saving survey costs while also improving the accuracy of survey results. The soil type spatial attributes of the preliminary soil type map are determined based on the matching results of the soil types in the preliminary soil type map with the types of the second soil survey, thereby obtaining an adjusted soil type map based on the soil type spatial attributes, and then matching it with the current land use attribute map to form a soil survey base map. The soil survey base map includes regular survey areas and key survey areas. The regular survey areas and key survey areas in the soil survey base map are surveyed separately, and the work focus is clear and definite. Finally, the soil survey base map is updated based on the survey results to obtain a third soil type map, thereby improving soil survey efficiency and saving survey costs.

[0116] In addition, an embodiment of the present invention further provides a computer-readable storage medium having a computer program stored thereon, which implements the steps of the method in the above embodiment when the program is executed by a processor.

[0117] In addition, an embodiment of the present invention further provides a data processing device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the method in the above embodiment when executing the program.

[0118] The logic and / or steps represented in the flowcharts or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing the logical functions, and can be embodied in any computer-readable medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (e.g., a computer-based system, a system including a processor, or other system that can fetch and execute instructions from an instruction execution system, apparatus, or device). For purposes of this specification, a "computer-readable medium" can be any device that can contain, store, communicate, propagate, or transport a program for use by, or in conjunction with, an instruction execution system, apparatus, or device.

[0119] More specific examples (a non-exhaustive list) of computer-readable media include the following: an electrical connection with one or more wires (electronic devices), a portable computer disk cartridge (magnetic devices), random access memory (RAM), read-only memory (ROM), erasable and programmable read-only memory (EPROM or flash memory), fiber optic devices, and portable compact disk read-only memory (CDROM). In addition, the computer-readable medium may even be paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium and then editing, interpreting, or processing it in another suitable manner as necessary, and then storing it in a computer memory.

[0120] It should be understood that various components of the present invention may be implemented using hardware, software, firmware, or a combination thereof. In the above-described embodiments, multiple steps or methods may be implemented using software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented using hardware, as in another embodiment, any one of the following technologies known in the art or a combination thereof may be used: a discrete logic circuit having logic gate circuits for implementing logic functions on data signals, an application-specific integrated circuit having suitable combinational logic gate circuits, a programmable gate array (PGA), a field-programmable gate array (FPGA), etc.

[0121] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0122] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A soil type map updating method, characterized in that: include: Obtain geological data, topographic data, and remote sensing image data and perform data analysis, and spatially combine the analyzed data to obtain a preliminary soil type map; Obtaining a second soil survey result map, and obtaining a second soil survey result based on the second soil survey result map, obtaining a preliminary soil type result based on the preliminary soil type map, analyzing the second soil survey result and the preliminary soil type result using a preset model to match the soil type of the preliminary soil type map with the second soil survey type, thereby determining the soil type spatial attributes of the preliminary soil type map based on the matching result, and obtaining an adjusted soil type map based on the soil type spatial attributes; Obtaining a current land use attribute map and matching it with the adjusted soil type map to form a soil survey base map, wherein the soil survey base map includes regular survey areas and key survey areas; Arranging sampling points and profile points according to the soil survey base map, surveying the regular survey area and the key survey area respectively according to the sampling points and the profile points, and updating the soil survey base map according to the regular survey area and the key survey area after the survey to obtain a third soil type map; The step of determining the soil type spatial attributes of the preliminary soil type map based on the matching results includes: When the preliminary soil type can be completely matched with the second soil survey type, the soil type is determined based on the matching result; When the preliminary soil type cannot be completely matched with the second soil survey type, the second soil survey result map is reconciled with the preliminary soil type map, and the soil type is determined based on the reconciliation result. If the soil class matches but the subclass does not match, the subclass of the second soil survey shall prevail; if the soil class and subclass match but the soil genus does not match, the soil genus level shall be based on the derivation result; When the preliminary soil type cannot be matched with the second soil survey type at all, if the derivation result is paddy soil, the paddy soil shall prevail; if it is natural soil, a pending area shall be delineated and the pending area shall be used as the key survey area in the actual survey work.

2. The soil type map updating method according to claim 1, characterized in that: The steps of acquiring geological data, topographic data, and remote sensing image data, analyzing the data, and spatially combining the analyzed data to obtain a preliminary soil type map include: Acquiring geological data, extracting stratum attributes and lithology based on the geological data, and generating a stratum-to-soil parent material conversion table and a stratum-to-lithology conversion table based on the attributes and lithology, respectively; and converting a geological map into a parent material distribution map and a lithology distribution map based on the stratum-to-soil parent material conversion table and the stratum-to-lithology conversion table; Acquiring terrain data, the terrain data including a plurality of terrain factors, the terrain factors including elevation, slope, and aspect, and analyzing the terrain factors using a preset model to obtain an elevation distribution map, a slope distribution map, and a slope aspect distribution map; Acquire remote sensing image data and analyze vegetation coverage, vegetation type, and land use type to obtain vegetation coverage distribution maps, vegetation type distribution maps, and land use distribution maps; The parent material distribution map, elevation distribution map, slope distribution map, aspect distribution map, vegetation cover distribution map, vegetation type distribution map and land use distribution map are analyzed and superimposed in combination with the preset model, and the analysis and superposition results are spatially combined to obtain a preliminary soil type map.

3. The soil type map updating method according to claim 2, characterized in that: The steps for spatially combining the analyzed data to obtain a preliminary soil type map include: Based on the principles of soil genetics, the analyzed data were spatially combined with variable factors to obtain a preliminary soil type map. The variable factors included parent material, topography, organisms, climate, and time.

4. The soil type map updating method according to claim 1, characterized in that: The steps of obtaining preliminary soil type results according to the preliminary soil type map, analyzing the second soil survey results and the preliminary soil type results using a preset model to match the soil types of the preliminary soil type map with the second soil survey types, and then determining the soil type spatial attributes of the preliminary soil type map according to the matching results include: Obtain the place names in the second soil survey result map according to the second soil survey result map; The local nomenclature is converted into a national standard nomenclature to obtain a national standard nomenclature soil map; Combined with the national standard soil naming map, the preliminary soil type map is analyzed by a preset model to determine spatial attributes.

5. The soil type map updating method according to claim 1, characterized in that: In the step of obtaining the current land use attribute map: Paddy fields, agricultural, forestry and pasture lands, and unused lands are planned as census areas; The built-up land and some water areas are planned as non-census areas, which are areas whose types cannot be surveyed.

6. The soil type map updating method according to claim 1, characterized in that: The steps of respectively surveying the conventional survey area and the key survey area according to the sampling points and the profile points include: The number of sampling points in key census areas is greater than that in regular census areas.

7. A soil type map updating system, characterized in that: include: The acquisition module is used to acquire geological data, topographic data and remote sensing image data and perform data analysis, and spatially combine the analyzed data to obtain a preliminary soil type map; an analysis module, configured to obtain a second soil survey result map, obtain a second soil survey result based on the second soil survey result map, obtain a preliminary soil type result based on the preliminary soil type map, analyze the second soil survey result and the preliminary soil type result using a preset model to match the soil type of the preliminary soil type map with the soil type of the second soil survey, thereby determining a soil type spatial attribute of the preliminary soil type map based on the matching result, and obtain an adjusted soil type map based on the soil type spatial attribute; A matching module is used to obtain a current land use attribute map and match it with the adjusted soil type map to form a soil survey base map, wherein the soil survey base map includes regular survey areas and key survey areas; an updating module, configured to arrange sampling points and profile points according to the soil survey base map, survey the regular survey areas and the key survey areas respectively according to the sampling points and the profile points, and update the soil survey base map according to the surveyed regular survey areas and the surveyed key survey areas to obtain a third soil type map; The step of determining the soil type spatial attributes of the preliminary soil type map based on the matching results includes: When the preliminary soil type can be completely matched with the second soil survey type, the soil type is determined based on the matching result; When the preliminary soil type cannot be completely matched with the second soil survey type, the second soil survey result map is reconciled with the preliminary soil type map, and the soil type is determined based on the reconciliation result. If the soil class matches but the subclass does not match, the subclass of the second soil survey shall prevail; if the soil class and subclass match but the soil genus does not match, the soil genus level shall be based on the derivation result; When the preliminary soil type cannot be matched with the second soil survey type at all, if the derivation result is paddy soil, the paddy soil shall prevail; if it is natural soil, a pending area shall be delineated and the pending area shall be used as the key survey area in the actual survey work.

8. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the soil type map updating method according to any one of claims 1 to 6 is implemented.

9. A data processing device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the program, the soil type map updating method according to any one of claims 1 to 6 is implemented.

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