基于GIS的龙口市泳汶河流域地貌形态定量分析

Quantitative Morphologic Analysis of Yongwen River Basin at Longkou Based on Geographic Information System

地形因子是最基本的自然地理要素,也是对人类的生产和生活影响最大的自然要素。精确的地形地貌因子分析可为经济发展、农业规划、水土流失、工程建设等研究提供有力的数据支持。应用GIS工具,对龙口市泳汶河流域作了坡度、坡向等4方面研究性的分析,得出了比较准确的数据。

Quantitative morphologic analysis has been the new stage of morphology development since 1950's. Quantitative morphologic analysis may be used to study three\|dimensional surface form in the round, and may distill all kind of morphological character parameters and basic topography elements. Data distilled by the method are not only the most basic physical geographic elements, but also the most influential physical elements to the human's everyday activity. Quantitative morphologic analysis provides data support for ecological study, agricultural plan, soil and water erosion and building etc. The paper takes the Yongwen River basin as study area and creates special maps of Yongwen River basin in slope, aspect, elevation, rolling tolerance and virtual topography based on Geographic Information System and gets precise morphologic factors data. Then the morphological factors data and surface substance are analyzed. Finally the advantages and disadvantages of the method are evaluated.