基于Arc-Engine的地形分析子系统开发

Development subsystem of terrain analysis based on Arc-Engine

基于DEM的地形分析是GIS研究的重要内容,能为土壤侵蚀、流域管理与规划以及水文分析等提供有效技术保障,具有广泛的应用前景。本文以陕西李家寨DEM数据为例,使用C#开发语言和Arc-Engine开发组件,依据系统需求分析,进行系统模块设计,实现了以DEM数据为主的地形分析子系统。系统构成包括基本功能模块、表面分析模块、水文分析模块和扩展模块四部分。开发系统兼容性好并满足了数据格式的交换;分析功能丰富,包括了地表参数的计算、可视域分析、填挖方分析功能、流域水文信息管理及其地形湿度指数计算等。该系统操作简单,用户界面方便,实用性强。我们最终的软件开发结果可完全用于地形相关分析,具有重要的实践意义。

Terrain analysis based on DEM is an important content of GIS research. It can provide the method for soil erosion, watershed management and planning and its application is rather wide. The system of terrain analysis was designed and developed using C# language and Arc-Engine components according to the system requirements. Li jia zhai DEM was as data resource. Many rich system function were developed, which have basic function, surface analysis, hydrography analysis and extension model. Especially view shed analysis, cut-fill analysis, watershed information analysis and topographic wetness index could be applied. This system has good compatibility to support the exchange of different formats. The demand of calculation about terrain parametersis met. The characteristic of system is friendly interface, convenient operation, and powerful function. Our final software development results can be fully used for terrain correlation analysis, and has important practical significance.