CN114638512A - Method and system for permanent basic farmland planning - Google Patents

Abstract

The invention relates to the technical field of permanent basic farmland planning, in particular to a method and a system for permanent basic farmland planning, which comprise the following steps: determining a working base map according to the current permanent basic farmland pattern spots and the three-tone pattern spots; obtaining a potential farmland according to the working base map and the special land use data; and (4) replanting the basic farmland according to the potential farmland and the construction occupation to obtain the final permanent basic farmland result. The final permanent basic farmland result is obtained by combining the potential farmland and complementing the permanent basic farmland, the automatic planning of the permanent basic farmland is realized, compared with each link for manually planning the permanent basic farmland in the prior art, the potential farmland is obtained by using the data through the work base map and the land specialization, and then the permanent basic farmland is planned according to the verified basic farmland, so that the work efficiency is greatly improved, the work cost is reduced, and the error rate is reduced.

Description

Method and system for permanent basic farmland planning

Technical Field

The invention relates to the technical field of permanent basic farmland planning, in particular to a method and a system for permanent basic farmland planning.

Background

At present, each link of permanent basic farmland planning needs manual treatment, and the permanent basic farmland planning cannot be automatically carried out, so that the working efficiency is low.

Disclosure of Invention

In view of the defects in the prior art, the invention provides a method for permanently marking a basic farmland, so as to improve the working efficiency.

In a first aspect, the present invention provides a method for permanent basic field delineation.

In a first enablement, a method for permanent basic field delineation comprises: determining a working base map according to the current permanent basic farmland pattern spots and the three-tone pattern spots; obtaining a potential farmland according to the working base map and the special land use data; and (4) replanting the basic farmland according to the potential farmland and the construction occupation to obtain the final permanent basic farmland result.

In combination with the first implementable manner, in a second implementable manner, determining a work base map from the current permanent basic farmland map spot and the triple-adjusted map spot comprises: superposing the existing permanent basic farmland pattern spots and the three-tone pattern spots to obtain an overlapping area; under the condition that the overlapping area is greater than or equal to the first threshold value, the corresponding first pattern spot of the current permanent basic farmland pattern spot on the three-tone pattern spot is true; determining the first pattern spot as a pattern spot in a permanent basic farmland; determining other pattern spots except the first pattern spot on the three-tone pattern spot as pattern spots except for the permanent basic farmland; and determining the pattern spots in the permanent basic farmland and the pattern spots outside the permanent basic farmland as the working base map.

In combination with the first implementable manner, in a third implementable manner, the land specific use data includes ecological protection red line specific use data, approved construction land specific use data, return to forest specific use data, and soil pollution farmland specific use data.

With reference to the first implementation manner, in a fourth implementation manner, before obtaining the potential farmland according to the work base map and the land-specific use data, the method further includes: acquiring original data of a plurality of land specials; and carrying out batch conversion of data formats on the original data of the land special item to obtain the use data of the land special item.

In combination with the first implementable manner, in a fifth implementable manner, obtaining a potential farmland from the work base map and the land specific use data comprises: determining whether the special use data of each land can be called out; performing intersection operation on the working base map according to the adjustable land special use data to obtain each intersection map layer; erasing the working base map according to the adjustable land special use data to obtain a residual map layer after the erasing operation; and determining a potential farmland according to each crossed layer and the rest layers after the erasing operation.

In combination with the first implementable manner, in a sixth implementable manner, a final permanent basic farmland result is obtained by replanting a basic farmland according to a potential farmland and a construction occupation, including: combining the pattern spots of the potential farmland with the pattern spots of the constructed and occupied replanting basic farmland to obtain combined pattern spots; and determining the land corresponding to the combined pattern spots as the final permanent basic farmland result.

With reference to the sixth implementable manner, in a seventh implementable manner, the method further includes: calculating an ellipsoid area according to the combined pattern spots; acquiring the area of a field ridge according to the ellipsoidal area; obtaining the area of a permanent basic farmland pattern spot according to the ellipsoid area and the area of the farmland ridge; determining the area of the drawn permanent basic farmland according to the area of the drawn permanent basic farmland patches; obtaining a permanent basic farmland database according to the permanent basic farmland area, the field ridge area, the permanent basic farmland patch area and the final permanent basic farmland result; and generating a permanent basic farmland planning related report according to the planning permanent basic farmland database.

According to the technical solution of the seventh implementation manner, the beneficial technical effects of the present invention are as follows: determining a working base map according to the current permanent basic farmland pattern spots and the three-tone pattern spots; then obtaining a potential farmland according to the working base map and the land specific use data; obtaining the area of a permanently-drawn basic farmland according to the potential farmland and the construction occupation of the additionally-drawn basic farmland; further obtaining a database for defining a permanent basic farmland; compared with the prior art that each link of the permanent basic farmland is drawn by manual processing and the work report is drawn, the permanent basic farmland area is drawn according to the potential farmland and the occupied and drawn back basic farmland by construction, the permanent basic farmland database is obtained, the permanent basic farmland drawing related report is automatically generated according to the permanent basic farmland drawing database, and the work efficiency is improved.

With reference to the seventh implementation manner, in an eighth implementation manner, the obtaining a permanently planned basic farmland database according to the permanently planned basic farmland area includes: and storing the final permanent basic farmland result, the planned permanent basic farmland area, the planned permanent basic farmland patch area and the farmland bank area in a database, wherein the database is the database for the planned permanent basic farmland.

With reference to the seventh implementation manner, in a ninth implementation manner, the generating a permanent basic farmland planning related report according to the planning permanent basic farmland database includes: according to the preset working report template, making statistical analysis on the permanent basic farmland database to generate permanent basic farmland planning related report

In a second aspect, the present invention provides a system for permanent basic field delineation, comprising: a base map determination module configured to determine a work base map based on the current permanent base field pattern patch and the trimmings pattern patch; the potential farmland acquisition module is configured to acquire a potential farmland according to the working base map and the land specific use data; and the permanent basic farmland obtaining module is configured to patch the basic farmland according to the potential farmland and the construction occupation to obtain the final permanent basic farmland result.

According to the technical scheme, the method and the system for basic farmland planning have the following beneficial technical effects: the final permanent basic farmland result is obtained by combining the potential farmland and complementing the permanent basic farmland, the automatic planning of the permanent basic farmland is realized, compared with each link for manually planning the permanent basic farmland in the prior art, the potential farmland is obtained by using the data through the work base map and the land specialization, and then the permanent basic farmland is planned according to the verified basic farmland, so that the work efficiency is greatly improved, the work cost is reduced, and the error rate is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention, reference will now be made briefly to the embodiments or to the accompanying drawings that are needed in the description of the prior art. In all the drawings, the elements or parts are not necessarily drawn to actual scale.

FIG. 1 is a schematic illustration of a method for permanent basic field delineation according to an embodiment of the present invention;

fig. 2 is a schematic diagram of a system for permanent basic field delineation according to an embodiment of the present invention.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the present invention belongs.

Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

Referring to fig. 1, the present embodiment provides a method for permanent basic farmland planning, which includes:

step S01, determining a working base map according to the current permanent basic farmland map patches and the triple-tone map patches;

step S02, obtaining a potential farmland according to the working base map and the land specific use data;

and step S03, replanting the basic farmland according to the potential farmland and the construction occupation to obtain the final permanent basic farmland result.

Optionally, the current permanent base field pattern spot is a pattern spot of a permanent base field currently practiced. The third-time map spot is a land type map spot of the third national homeland survey.

Optionally, determining a work base map according to the current permanent basic farmland map spot and the trimmable map spot, comprising: superposing the existing permanent basic farmland pattern spots and the three-tone pattern spots to obtain an overlapping area; under the condition that the overlapping area is greater than or equal to the first threshold value, the corresponding first pattern spot of the current permanent basic farmland pattern spot on the three-tone pattern spot is true; determining the first pattern spot as a pattern spot in a permanent basic farmland; determining other pattern spots except the first pattern spot on the three-tone pattern spot as pattern spots except for the permanent basic farmland; and determining the pattern spots in the permanent basic farmland and the pattern spots outside the permanent basic farmland as the working base map.

Optionally, the first threshold is 400 square meters, or the first threshold is 70% of the current permanent basic field pattern patch, or the first threshold is 70% of the triple tone pattern patch. In some embodiments, because the accuracy of the pattern spots of the current permanent basic farmland and the pattern spots of the third national soil survey is different, the overlapping area is obtained after the pattern spots of the current permanent basic farmland and the pattern spots of the third national soil survey are overlapped, and then a more accurate working base map can be obtained according to the overlapping area. Under the condition that the overlapping area is larger than or equal to 400 square meters, searching first pattern spots corresponding to all the current permanent basic farmlands in the three-tone pattern spots, and determining the first pattern spots as pattern spots in the permanent basic farmlands; determining other pattern spots except the first pattern spot on the three-tone pattern spot as pattern spots except for the permanent basic farmland; and determining the pattern spots in the permanent basic farmland and the pattern spots outside the permanent basic farmland as the working base map.

Optionally, the land specific use data includes ecological protection red line specific use data, approved construction land specific use data, return to forest specific use data, soil-polluted farmland specific use data, and the like.

Optionally, before obtaining the potential farmland according to the work base map and the land specific use data, the method further comprises the following steps: acquiring original data of a plurality of land specials; and carrying out batch conversion of data formats on the original data of the land special item to obtain the use data of the land special item. Through the batch conversion of the original data of the land special item, the speed of obtaining the use data of the land special item is improved, and further the speed of permanently marking the basic farmland is improved.

In some embodiments, the data collected from different counties may be in different formats, and thus, the raw data for each land project may be in several formats, such as raw data in the form of standard coordinate strings in the TXT (Text file) format, line data in the CAD (computer aided design) format, and face data.

Optionally, the performing batch conversion of data format on the raw data of the land specific item to obtain the usage data of the land specific item includes: converting the original data of the land special items in various formats into planar data in a shape File (an ESRIShapefile, a space data open format) format in batches; the Geographic Information System (GIS) projection function is adopted to project the planar data in the shape file format in batch into data of a Chinese geocentric coordinate system2000 (CGCS 2000), namely land specific use data.

In some embodiments, the format of the land specific raw data is a standard coordinate string in TXT format. Traversing a TXT format standard coordinate string file in a preset folder, extracting coordinate values according to the patch plot, realizing batch format conversion by adopting functions of generating points and generating faces, obtaining planar data in a shape file format, and taking the name of the TXT format standard coordinate string file as the name of the planar data in the shape file format. Traversing the planar data in the shape file format, and projecting the planar data in the shape file format into data of a Chinese geocentric coordinate system2000 in batches by adopting a GIS projection function.

In some embodiments, the format of the original data of the land-specific is line data and surface data in a CAD format, the line data and the surface data in the CAD format in the preset folder are traversed, batch format conversion is realized by adopting a CAD-to-shape File format and a line-to-surface function of a GIS to obtain planar data in the shape File format, and the CAD File name is also used as the name of the planar data in the shape File format. Traversing the planar data in the shape file format, and projecting the planar data in the shape file format into data of a Chinese geocentric coordinate system2000 in batches by adopting a GIS projection function.

Optionally, obtaining a potential farmland from the work base map and the land specific use data comprises: determining whether the special use data of each land can be called out; performing intersection operation on the working base map according to the adjustable land special use data to obtain each intersection map layer; erasing the working base map according to the adjustable land special use data to obtain a residual map layer after the erasing operation; and determining a potential farmland according to each crossed layer and the rest layers after the erasing operation.

Compared with the prior art in which each link of the permanent basic farmland is planned through manual operation, the potential farmland is obtained through intersecting and erasing the working base map and the land special use data, and the permanent basic farmland is planned according to the verified basic farmland, so that the working efficiency is greatly improved, the working cost is reduced, and the error rate is reduced.

Optionally, before determining whether each land specific use data is callable, the method further comprises: and determining the arrangement sequence of the special land use data.

Optionally, performing intersection operation on the working base map according to each adjustable land specific use data to obtain each intersection map layer, including: and determining whether the use data of each land special item can be called out according to a preset rule, and sequentially performing intersection operation on the called out use data of the land special item and the working base map according to the arrangement sequence to obtain each intersection map layer.

Optionally, determining whether each land specific use data is callable according to a preset rule includes: and determining whether the land specific use data can be called out in the permanent basic farmland or not and whether the land specific use data can be called out outside the permanent basic farmland or not according to a preset rule.

In some embodiments, the standard of the pattern spot control in the permanent basic farmland is different from that of the pattern spot control outside the permanent basic farmland, and the pattern spot control in the permanent basic farmland is more strict. And taking a call-out standard issued by the country as a preset rule, and respectively determining whether the special use data of each land can be called out in the permanent basic farmland or not and whether the special use data of each land can be called out outside the permanent basic farmland or not according to the preset rule.

Optionally, when the land specific use data are all data in the permanent basic farmland, determining whether each land specific use data can be called out in the permanent basic farmland according to a preset rule, and performing intersection operation on the called out land specific use data and the working base map in sequence according to the arrangement sequence to obtain each intersection map layer.

Optionally, when the land specific use data are all data outside the permanent basic farmland, determining whether each land specific use data can be called out outside the permanent basic farmland according to a preset rule, and performing intersection operation on the called out land specific use data and the working base map in sequence according to the arrangement sequence to obtain each intersection map layer.

Optionally, when part of the land specific use data is data in a permanent basic farmland and part of the land specific use data is data outside the permanent basic farmland, intersecting the land specific use data which can be adjusted in the permanent basic farmland with the pattern spots in the permanent basic farmland in the work base map according to the sequence of arrangement, intersecting the land specific use data which can be adjusted outside the permanent basic farmland with the pattern spots outside the permanent basic farmland in the work base map, and determining the pattern layer where each pattern spot is obtained after two times of intersecting operation as each intersecting pattern layer.

Optionally, the erasing operation is performed on the work base map according to the arrangement sequence and the specific use data of each land respectively, and the remaining map layers after the erasing operation are obtained, including: and determining whether the land special use data can be called out according to a preset rule, and sequentially carrying out erasing operation on the called out land special use data and the working base map according to the arrangement sequence to obtain the residual map layer after the erasing operation.

Optionally, when the land-specific use data are all data in the permanent basic farmland, determining whether each land-specific use data can be called out in the permanent basic farmland according to a preset rule, and sequentially carrying out erasing operation on the called out land-specific use data and the working base map according to the arrangement sequence to obtain a residual map layer after the erasing operation.

Optionally, when the land-specific use data are all data outside the permanent basic farmland, determining whether each land-specific use data can be called out outside the permanent basic farmland according to a preset rule, and sequentially erasing the called out land-specific use data with the working base map according to the arrangement sequence to obtain the remaining map layer after the erasing operation.

Optionally, when the part of the land specific use data is data in a permanent basic farmland, and the part of the land specific use data is data outside the permanent basic farmland, according to the sequence of the arrangement, the land specific use data which can be adjusted in the permanent basic farmland and the pattern spots in the permanent basic farmland in the work base map are subjected to an erasing operation, the land specific use data which can be adjusted outside the permanent basic farmland and the pattern spots outside the permanent basic farmland in the work base map are subjected to an erasing operation, and the image layer where the pattern spots obtained after the two erasing operations are located is determined as the remaining image layer after the erasing operation.

Optionally, obtaining a potential farmland according to the work base map and the land specific use data, further comprising: determining the arrangement sequence of the special use data of each land; performing intersection operation on the working base map according to the arrangement sequence and the special use data of each land respectively to obtain each intersection map layer; erasing the working base map according to the arrangement sequence and the special use data of each land respectively to obtain the residual map layer after the erasing operation; and determining a potential farmland according to each crossed layer and the rest layers after the erasing operation.

Optionally, the reason of the intersection operation is filled in each intersection layer, and the reason of the erasing operation is filled in the remaining layers after the erasing operation. So as to be convenient for knowing the change situation of the permanent basic farmland at any time and being convenient for repeated inspection.

Optionally, the final permanent basic farmland result is obtained by replanting the basic farmland according to the potential farmland and the construction occupation, and comprises the following steps: combining the pattern spots of the potential farmland with the pattern spots occupying the repair and division of the basic farmland to obtain combined pattern spots; and determining the land corresponding to the combined pattern spots as the final permanent basic farmland result.

Optionally, determining the land corresponding to the combined pattern spot in the actual homeland as the final permanent basic farmland result.

The final permanent basic farmland result is obtained by combining the pattern spots of the potential farmland and complementing the pattern spots of the permanent basic farmland, so that the permanent basic farmland is drawn, compared with the prior art in which each link of the permanent basic farmland is drawn through manual operation, the potential farmland is obtained by intersecting and erasing the working base map and the land special use data, and the permanent basic farmland is drawn according to the verified basic farmland, so that the working efficiency is greatly improved, the working cost is reduced, and the error rate is reduced.

Optionally, the method for demarcating a basic farmland further comprises: calculating an ellipsoid area according to the combined pattern spots; acquiring the area of a field ridge according to the ellipsoidal area; obtaining and defining the area of a permanent basic farmland pattern spot according to the ellipsoid area and the area of a farmland ridge; determining the area of the drawn permanent basic farmland according to the area of the drawn permanent basic farmland patches; obtaining a permanent basic farmland database according to the permanent basic farmland area, the field ridge area, the permanent basic farmland pattern area and the final permanent basic farmland result; and generating a permanent basic farmland planning related report according to the planning permanent basic farmland database.

Optionally, calculating an ellipsoid area from the merged patches comprises: and calculating the combined image spots by using an ellipsoid area calculation formula to obtain the ellipsoid areas of the combined image spots.

Optionally, obtaining the field area according to the ellipsoidal area includes: the ellipsoidal area is multiplied by the subtraction coefficient of the field ridge to obtain the field ridge area, i.e. the subtraction area.

Optionally, obtaining the area of the permanently defined basic farmland pattern spot according to the ellipsoid area and the field ridge area comprises: and subtracting the area of the farmland ridge from the area of the ellipsoid to obtain the area of the permanently-defined basic farmland pattern spot.

Optionally, determining the area of the permanently marked basic farmland according to the area of the permanently marked basic farmland pattern spot comprises: and determining the farmland area corresponding to the demarcated permanent basic farmland spot area as the demarcated permanent basic farmland area.

Optionally, dividing the square of the map drawing scale of the three-tone patch into permanent basic farmland patch areas to obtain the farmland areas.

Optionally, obtaining a database of the planned permanent basic farmland based on the area of the planned permanent basic farmland comprises: and storing the final permanent basic farmland result, the planned permanent basic farmland area, the planned permanent basic farmland patch area and the farmland bank area in a database, wherein the database is the database for the planned permanent basic farmland.

In some embodiments, the demarcating a permanent base field database includes demarcating a permanent base field spot attribute structure description table. The description table for defining the permanent basic farmland spot attribute structure comprises a BSM (identification code), a ZLDPMC (sitting unit name), a QSDWMC (right belonging unit name), a DLMC (land type name), a YJBNTMJ (permanent basic farmland area), a YJBNTTBMJ (permanent basic farmland spot area), a KCXS (deduction coefficient), a KCMJ (deduction area) and the like.

Optionally, the step of defining a permanent basic farmland database further comprises: call in data, call out data, and scratch in data.

Alternatively, the permanent basic field to be verified and the final permanent basic field result are compared, and a portion of the permanent basic field to be verified which is more than the final permanent basic field result is determined as the brought-up data. And determining the part of the permanent basic farmland to be verified, which is deficient in the final permanent basic farmland result, as the callout data. And determining the construction occupation to patch the basic farmland as the input data.

Optionally, the demarcated permanent basic farmland database further comprises administrative districts.

Optionally, generating a permanent basic farmland planning related report according to the planning permanent basic farmland database comprises: and according to a preset work report template, carrying out statistical analysis on the database of the permanently-defined basic farmland to generate a permanent basic farmland-defining related report.

As shown in connection with fig. 2, the present embodiment provides a system for permanent basic field delineation, comprising: a base map determination module 101, a potential farmland acquisition module 102 and a permanent basic farmland acquisition module 103. The base map determination module 101 is configured to determine a work base map based on the current permanent base field patch and the trimmings patch; the potential farmland acquisition module 102 is configured to acquire potential farmlands according to the work base map and the land specific use data; the permanent basic farmland acquisition module 103 is configured to patch the basic farmland to obtain the final permanent basic farmland result according to the potential farmland and the construction occupation.

Optionally, the system for permanent basic field delineation further comprises: and a work report generation module. The work report generation module is configured to calculate an ellipsoid area according to the combined image spots; acquiring the area of a field ridge according to the ellipsoidal area; obtaining the area of a permanent basic farmland pattern spot according to the ellipsoid area and the area of the farmland ridge; determining the area of the drawn permanent basic farmland according to the area of the drawn permanent basic farmland patches; obtaining a permanent basic farmland database according to the permanent basic farmland area; and generating a permanent basic farmland planning related report according to the planning permanent basic farmland database.

Optionally, the system for permanent basic field delineation further comprises: and the result compiling module is configured to generate a result catalog for defining the permanent basic farmland database according to a preset result catalog template, and store the data in the permanent basic farmland database in a classified manner according to the result catalog.

In some embodiments, statistical analysis is performed on the demarcated permanent basic farmland database, a template of a working report of the permanent basic farmland verification rectification and complementation scheme and the permanent basic farmland verification rectification and complementation is combined, compilation of a related report of the permanent basic farmland demarcation is automatically generated, a result catalogue of the demarcated permanent basic farmland database is generated according to a preset result catalogue template, and data in the demarcated permanent basic farmland database is classified and stored according to the corresponding relation between a unique code in the demarcated permanent basic farmland database and a data name in the demarcated permanent basic farmland database and the sequence in the result catalogue.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

The above examples are only intended to illustrate the technical solution of the present invention, and not to limit it; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.

Claims (10)

1. A method for permanent basic field delineation, comprising:

determining a working base map according to the current permanent basic farmland pattern spots and the three-tone pattern spots;

obtaining a potential farmland according to the working base map and the land special use data;

and (4) replanting and dividing basic farmlands according to the potential farmlands and the construction occupation to obtain final permanent basic farmlands.

2. The method of claim 1, wherein determining the base map from the current permanent basic field map patch and the trimmable map patch comprises:

superposing the current permanent basic farmland pattern spots and the three-tone pattern spots to obtain an overlapped area;

(ii) in the event that the overlap area is greater than or equal to a first threshold, determining a corresponding first patch of the current permanent base field patch on the three-tone patch; determining the first pattern spot as a pattern spot in a permanent basic farmland; determining other pattern spots on the three-tone pattern spot except the first pattern spot as pattern spots outside the permanent basic farmland; and determining the pattern spots in the permanent basic farmland and the pattern spots outside the permanent basic farmland as a working base map.

3. The method according to claim 1, wherein the land specific use data comprises ecological conservation red line specific use data, approved construction land specific use data, return to agricultural land specific use data, and soil contaminated farmland specific use data.

4. The method of claim 1, further comprising, prior to obtaining a potential field from the workbook and the land specific use data:

acquiring original data of a plurality of land specials;

and carrying out batch conversion of data formats on the original data of the land special item to obtain the use data of the land special item.

5. The method of claim 1, wherein obtaining potential farmlands from the workbook and land specific usage data comprises:

determining whether each of the land specific use data is callable;

performing intersection operation on the working base map according to the adjustable land special use data to obtain each intersection map layer;

erasing the working base map according to the adjustable land special use data to obtain a residual map layer after the erasing operation;

and determining a potential farmland according to each intersecting layer and the rest layers after the erasing operation.

6. The method of claim 1, wherein the step of creating a final permanent basic field result based on the potential field and the construction occupancy to patch the basic field comprises:

combining the pattern spots of the potential farmland and the pattern spots of the construction occupied and planned supplementary basic farmland to obtain combined pattern spots;

and determining the land corresponding to the combined pattern spots as the final permanent basic farmland result.

7. The method of claim 6, further comprising:

calculating an ellipsoid area according to the combined pattern spots;

acquiring the area of a field ridge according to the ellipsoidal area;

obtaining the area of a permanent basic farmland pattern spot according to the ellipsoid area and the field ridge area;

determining the area of the drawn permanent basic farmland according to the area of the drawn permanent basic farmland pattern;

obtaining a permanent basic farmland database according to the permanent basic farmland area, the field ridge area, the permanent basic farmland spot area and the final permanent basic farmland result;

and generating a permanent basic farmland planning related report according to the planning permanent basic farmland database.

8. The method of claim 7, wherein obtaining a demarcated permanent base field database from the demarcated permanent base field area comprises:

and storing the final permanent basic farmland result, the planned permanent basic farmland area, the planned permanent basic farmland patch area and the farmland bank area in a database, wherein the database is a planned permanent basic farmland database.

9. The method of claim 7, wherein generating a permanent basic farmland planning related report from the planning permanent basic farmland database comprises:

and according to a preset work report template, performing statistical analysis on the database of the planned permanent basic farmland to generate a permanent basic farmland planning related report.

10. A system for permanent basic field delineation, comprising:

a base map determination module configured to determine a work base map based on the current permanent base farmland patch and the trimap patch;

a potential farmland acquisition module configured to acquire potential farmlands according to the work base map and the land specific use data;

and the permanent basic farmland obtaining module is configured to patch the basic farmland according to the potential farmland and the construction occupation to obtain the final permanent basic farmland result.

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