组件式GIS技术构建的多尺度土壤侵蚀评价模块  

Multiscale Soil Loss Evaluation Model Based on Component Object Model GIS Technology

作　　者：徐海燕[1] 赵文武[1] 解纯营[1] 靳婷[1] 

机构地区：[1]北京师范大学资源学院,地表过程与资源生态国家重点实验室,北京100875

出　　处：《水土保持研究》2010年第1期117-121,共5页Research of Soil and Water Conservation

基　　金：国家自然科学基金项目“基于土壤流失过程的多尺度土地利用格局指数研究”(40501002);国家重点基础研究发展计划973计划“北方草地与农牧交错带生态系统维持与适应性管理的科学基础”(2007CB106806)

摘　　要：土壤侵蚀评价模型与GIS的集成一直是目前研究的热点问题。研究基于ArcGISEngine开发包和组件技术,在VisualBasic中调用ArcObjects组件,通过创建ActiveDLL工程,构建了基于RUSLE和土壤侵蚀评价指数模型的GIS内嵌模块。该模块包括:土壤侵蚀量计算、流域尺度土壤侵蚀评价、小流域尺度土壤侵蚀评价和坡面尺度土壤侵蚀评价四个子模块。研究表明基于ArcGISEngine,以二进制的动态链接库(DLL)表现,开发土壤侵蚀评价模块,能够简化土壤侵蚀评价的计算逻辑,提高工作效率,具有良好的扩充性、灵活性和可操作性,模块化的土壤侵蚀评价指数能更好地应用于土地利用与土壤侵蚀评价相关研究。Soil loss evaluation model and GIS integration is the most focusing problem in current research and application of GIS.In this study,based on the component object model technology and ArcGIS Engine,an extended GIS model was developed based on the conceptual models of RUSLE and Soil Loss Index model.Binary dynamic link library（DLL）was built to implement special functions with the language of Visual Basic.This module mainly including soil erosion calculation sub-component,soil loss evaluation of watershed scale sub-component,soil loss evaluation of small watershed scale sub-component,and soil loss evaluation of slope scale sub-component.It is capable of simplifying computational logic of the soil loss evaluation,improving the work efficiency.And it is a model which has good extendibility,flexibility,and maneuverability.The results showed that it is a practical and effective method that to explore an extended module based on ArcGIS Engine,represent by the manifestation of binary dynamic link library.Soil Loss Index would be used widely in the correlation research of landuse and soil loss evaluation.

关 键 词：组件式技术 ArcGISEngine 土壤侵蚀评价指数 尺度 

分 类 号：S157[农业科学—土壤学] TP79[农业科学—农业基础科学]