黄河多沙粗沙区分布式土壤流失模型支持系统  

Study on the modeling supporting system for distributed soil erosion in the region of abundant sediment and coarse sand of the Yellow River

作　　者：姚文艺[1] 秦奋[2] 王玲玲[1] 陈界仁[3] 

机构地区：[1]黄河水利科学研究院,河南郑州450003 [2]河南大学环境与规划学院,河南开封475001 [3]河海大学水利水电工程学院,江苏南京210098

出　　处：《水利水电科技进展》2009年第4期1-5,共5页Advances in Science and Technology of Water Resources

基　　金：水利部公益性行业科研专项经费项目(200701035);"十一五"国家科技支撑计划(2006BAB06B01)

摘　　要：利用3S技术,以黄河多沙粗沙区小流域分布式土壤流失数学模型为服务对象,建立模型支持系统。所建支持系统具有数据管理灵活高效、系统适用面广、易于扩充,以及可以实现各类数据实时生成的优点;达到了流域地形和水沙演进数据的自动提取;提出了虚拟现实环境参照下分类模板定义的方法,提高了遥感影像的分类精度,有效地解决了辨别"同物异谱、异物同谱"现象的问题;实现了GIS功能与专业模型的紧密耦合,两者之间的信息可以进行双向交换和修改。Using 3S （GIS, GPS, and RS） technology, a modeling support system is established and applied in a mathematical model of distributed soil erosion in the small Chabagou basin, in a Yellow River region with abundant sediment and comse sand. The system has many advantages, such as efficient and flexible data management, wide applicability, easy to extend, and realtime generation of various data. Automatic pick-up of watershed topography and sediment data is realized. The method of defining the classification of the model based on virtual reality is put forward, which improves the classification precision of a remote sensing image. The model can effectively solve the problems of the same object being in a different spectrum and of foreign matter being in the same spectrum. The close coupling of GIS with a professional model is implemented, the model and GIS can exchange information and revise data each other.

关 键 词：分布式侵蚀产沙模型 模拟支持系统 紧密耦合 自动提取 

分 类 号：S157[农业科学—土壤学]