Development And Foundation Of The GIS Software For Agriculture Resource In Jiangsu Province

In the course of developing The Agriculture Resource GIS in Jiangsu Province ,the author gathers and reorganizes a great deal of agriculture resources information about the province, which includes: basal geographic elements, land use status soil resource water resource climate resource traffic status rural socioeconomic status, agriculture projects, policies and law about Agriculture resources , agriculture programming information and real-time monitoring information about crop growth trends and yields based remote sensing , and builds agriculture resources database based spatial analysis finally . This database includes four sub-databases: attribute database , vector and grid database documents database and models database. Traditional mixed data model, which manages special data in the form of files and manages attribute data in the form of relation database, is adopted during building special database (attribute database vector and grid database) which is the nucleus of the data bank. Three criterions of database as well as the requests for developing system have been taken into account, the data is standardized in the form and can supply the supports to develop system needs. To improve the openness and maintainability, the data is classified and data dictionary is also composed. Agriculture Resource GIS is developed by three layer system(user -application -data),which will elevate the performance of the system .The user interface is composed of web and Maptitude interface, which is aesthetic and simple to operate, what's more, it is easy to upgrade to Webgis. The up to date versatile webs designing software: asp.net is adopted, in which the contents and the code are separated, so the system is easy to modificate .In the system, the fashions that data is displayed are flexible and various, nine sub-systems are developed according to the different form of data; and the system can query attribute data and special data, make simple special analysis. Wheat and rice location decision module the system explored can map the result, which is about wheat'muscle and rice'ripe restrict, the system is seamless. Moreover, the system is expandable, namely, we can append function module and refresh data. Agriculture Resource GIS will be a strong decision tool for agriculture resource estimation staple crop growth trends and yields analysis crop layout and so on.