WebGIS-based Suitability Evaluation System For Main Citrus Planting Areas

Due to the difficulty of digitizing citrus planting information and the lack of in-depth analysis of planting information,it is hard to make breakthroughs in the macro-control effects of the citrus industry.Agricultural informatization can provide scientific and effective technology for the digitization and in-depth analysis of citrus planting information.Among many agricultural informatization methods,the evaluation of planting suitability supported by WebGIS is particularly important.With the rapid development of WebGIS technology and suitability evaluation methods,it is possible to implement crop-based suitability evaluation methods on WebGIS.This paper implements a WebGIS-based citrus planting suitability evaluation system,which lays a technical foundation for the informatization of citrus sampling point data,the suitability evaluation process of citrus planting areas,and the rational layout of citrus planting areas.This paper uses WebGIS to implement common technical means,and completes a planting suitability evaluation system in main citrus producing areas including user management,data management,data display,level analysis,and suitability evaluation.The system uses suitability evaluation methods to combine the geospatial data visualization method classifies the suitability levels of the main citrus-producing areas to construct areas suitable for citrus planting,and provides a certain degree of reference for citrus growers and citrus industry regulators.(1)This paper considers four aspects of climate factors,soil factors,location factors and social factors,and selects 12 influencing factors as evaluation factors for suitability evaluation.The membership function and interval classification method are used to unify the dimensions of each factor,and the analytic hierarchy process is used.The method calculates the weight level of each evaluation factor,and calculates the suitability of each sampling point and evaluation unit by means of weighted summation.In this way,the theoretical basis for the evaluation model of citrus planting suitability is established.(2)According to the logical association between the database tables of the system,user data and evaluation model data are stored in Postgre SQL,and the storage evaluation unit and sampling point data are stored in Postgre SQL with the help of the middleware Post GIS.Use Geo Server’s WFS service to publish these geospatial data,and Spring Boot,Mybatis,Spring MVC help implement RESTful API interfaces to prepare for the front-end to call the data in the database.(3)User management and data management are the basic functions of the system,and are the key modules that influence the digitization of citrus suitability evaluation.Shiro and JWT are used to complete the user management module including user identity authentication,authorization and other functions;the data management module uses RESTful API-based asynchronous network requests to call database data encapsulated as JSON data,and realizes the sampling point for users to evaluate the suitability of citrus cultivation,User data,model data view,add,delete,edit,modify and other functions.(4)Data display,level analysis,and suitability evaluation are the key modules for suitability evaluation of informatized citrus sampling point.The data display module can display system data more comprehensively by using many geospatial data informatization methods provided by Open Layers and am Charts.The AHP module uses common user interaction methods and background matrix operations to achieve its basic functions.Combining the results of the hierarchical analysis module and the parameters set by the user,the suitability degree is calculated through the suitability grade division function,and the size of the sampling point icon,the color of the evaluation unit,the influence range of the heat map and other methods are used to display the result of the suitability.Based on the most advanced WebGIS development technology,this paper divides the citrus suitability evaluation system into five modules: user management,data management,data display,hierarchical analysis and suitability evaluation.These five modules are progressive and interrelated to form a fully functional citrus planting suitability evaluation system.This system organically combines the storage,editing,display,and analysis functions of geospatial data.It makes it possible to quickly and effectively evaluate the suitability of citrus planting on the WebGIS platform,provide guidance for the macrocontrol of the citrus industry,and provide an effective reference for other research institutions to develop a WebGIS planting suitability evaluation system.