基于GIS的土壤风蚀模型软件构建

针对当前土壤风蚀监测的实际需求,提出基于GIS技术构建土壤风蚀模型软件的思路和方法。该软件基于DTGIS核心服务平台,以C#为主开发语言,Silverlight为界面开发工具,采用轻型数据库SQLite进行数据存储;该软件可为用户提供GIS查询功能、站点数据管理、风力因子计算、土壤侵蚀模数计算、土壤侵蚀强度分级、时间分析、空间分析等功能服务,支持远程客户端连接和多点同时上传数据;同时,该软件将风蚀模型与GIS系统有机地集成到一起,不仅支持风蚀运算过程的交互,而且可以直接将模型运行结果显示在软件中;软件亦可以制作土壤侵蚀模数专题图、土壤侵蚀强度分级专题图、时空分析图,实现土壤风蚀数据系统化管理和数据可视化管理,为评价土壤风蚀的危害提供科学依据。

Architecture design of soil wind erosion model software based on GIS

Aiming at the current demand for soil wind erosion monitoring, a modeling software on wind erosion was present based on the GIS. Supporting by DTGIS core service platform, the new software was developed with C^# language, in addition to Silverlight as the interface designing tool and light database SQLite for data storage. This system provides customers with a number of new functionalities, including GIS inquiry service, site data management, wind factor calculation, soil erosion modulus calculation, soil erosion intensity classification, temporal analysis, spatial analysis, availability of remote clients connection and simultaneous multi-spot data uploading, and so on. Furthermore, the software was successfully integrated with GIS in the new development, which supported not only the interaction during soil erosion calculating procedures, but also the display of model process results. Finally, the software can be used to make thematic maps of soil erosion modulus, classification of soil erosion intensity, conduct spatial-temporal analysis, and achieve systematization as well as visualization of soil erosion statistics management. The various characteristics will help researchers collect, analyze, and evaluate data on soil erosion, which will make the new package become a useful supplement to inventory of research tools.