摘要
影响喀斯特流域地貌发育的因素复杂多样,除岩性、气候等条件外,流域水系特征及高程、流域坡度和流域切割程度和流域地表形态特征等也是影响喀斯特流域地貌发育的重要因素。本文根据贵州省ASTER影像,利用RS和GIS技术,提取DEM数据;以DEM数据、TM影像和CBERS影像为基础,选取32个喀斯特流域,探讨分析影响地貌发育的五大因素,并提取25个指标;借助MATLAB和Spss软件进行数据处理和主成分分析,得出影响地貌发育的九个主成分,得出影响喀斯特地貌发育从大到小的因素是流域水系特征及高程、流域坡度和流域切割程度和流域地表形态特征。
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 earthg 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 earthg surface morphology characteristics of Karst drainage.
出处
《测绘科学》
CSCD
北大核心
2008年第4期70-72,31,共4页
Science of Surveying and Mapping
基金
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)
