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《Geo-Information Science》 2006-02
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Classification System of 1:1 000 000 Digital Loess Geomorphology in China

CHAI Huixia,CHENG Weiming, QIAO Yuliang (Taiyuan University of Technology, Taiyuan 030024, China; State Key Laboratory of Resources and Environmental Information System,Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China)  
Loess geomorphology in China belongs to one of the typical landforms, whose classification system is the foundation of mapping. Up to now, the national classification system of loess geomorphology has not yet been established and published. By adopting new classification principles such as morphogenetic, geological tectonics and delamination, based on every kind of geomorphologic classification projects, this paper analyzed the nationwide research of loess landforms, with the advanced techniques such as Remote Sensing, Geographical Information System, established new national loess geomorphologic classification system, and put forward 5-bit number for coding the loess geomorphologic data. Based on Remote Sensing Image (Landsat TM and ETM), the characteristic atlas of typical loess geomorphology was compiled. The classification system includes fiver layers: relief and height, genetic types, position and outward appearance, slope-ditch density-incision depth, by integrating morphology with genesis. This research established the solid foundation for use the inside high-resolution satellite Remote Sensing data to complete 1:1 000 000 loess geomorphologic map of China. This classification system can adequately reflect the types characteristic of loess geomorphology and can also keep consistency with classification system of national digital landform, the classification system possesses the expandability function of other types.
【Fund】: 国家基金委杰出青年基金(40225004);; 科技部科学数据平台项目(2004DKA20180-08);; 国家基金委自然科学青年基金(40401048)
【CateGory Index】: P283.7
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