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《Science of Surveying and Mapping》 2008-04
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The influencing factor analysis of geomorphologic development of karst drainage based on DEM

HE Zhong-hua①,LIANG Hong①,HUANG Fa-su②,ZHAO Fang③,ZHOU Zhi④(①School of Geography and Biology,Guizhou Normal University,Guiyang 550001,China;②Department of Hydrology and Water-recource,Guiyang 550001,China;③The No.3 Middle school of Bai Yun District,Guiyang 550003,China;④Guizhou Appraisal Center For Environment & Engineering,Guiyang 550002,China)  
Karst drainage is a regional synthetic system that is made up of spatial drainage boundary,unique landform,river system structure and hydrologic dynamic processes and has its own special drainage structure.Thus,there are complicated and diversified factors that influence the Karst drainge geomorphologic development.Except for rock character and climate,there are very important factors for Karst basin water-streams and Elevation,basin slope,basin Cutted degree and earth's surface morphology Characteristics of Karst drainage.On the basis of DEM,TM and CBERS of 32 Karst drainages,the five important factors of affecting geomorphologic development are analyzed,and 25 indices are retrieved.Data processing and principal component analyzing have been done based on Spss and Matlab softwares,and nine principal components are gotten.It concludes that the factors to affect Karst geomorphologic development from big to small are the characteristic of Karst basin streams and elevation,basin slope,basin cutted degree and earth's surface morphology characteristics of Karst drainage.
【Fund】: 贵州省青年基金(黔教科2006307);; 贵州省科技基金(黔科合丁字(2005)2085号)
【CateGory Index】: P931.5
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