黄土高原数字小流域地理空间基础框架的建立及应用研究

The Construction and Application of Geo-spatial Basic Framework of Digital Small Watershed in Loess Plateau

数字小流域是数字地球中一个不可替代的独立节点 ,小流域地理空间基础框架的建立是数字小流域的核心组成部分。本文以中科院水保所宁夏固原试区为例 ,对构建数字小流域地理空间基础框架要素的确定、数据的采集方法、管理方法进行了论述 ;基于 DOM进行了试区土地利用的动态监测 ,对基础框架信息的应用进行了初步的探讨。

The digital small watershed is an independent node that can not be replaced, the geo-spatial basic frame of small watershed is the hardcore of digital small watershed. Given the example of Guyuan of Ningxia, the test area of Institute of Soil and Water Conservation, CAS, the confirmation of frame elements, the method of collecting date and the managed method for constructing geo-spatial basic frame of the digital small watershed were discussed. Based on DOM, the dynamic monitoring of land use was performed and the application of information of basic frame was primarily discussed.