Journal
JOURNAL OF GEOGRAPHICAL SCIENCES
Volume 19, Issue 5, Pages 600-614Publisher
SCIENCE PRESS
DOI: 10.1007/s11442-009-0600-4
Keywords
geomorphology; geomorphologic regionalization; geographical grid; system clustering
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Funding
- National Natural Science Foundation of China [40871177]
- Project of State Key Lab of Resources and Environmental Information System [088RA304SA]
- CAS Knowledge Innovation Project
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This paper presents a method of geomorphologic regionalization for Xinjiang, with the use of Srtm-DEM (resolution 90 m) and TM images for 1990 (resolution 30 m). After interpretation and classification of geonnorphologic types, the present research focuses on the qualitative and quantitative distribution of different geornorphologic types based on geographical grid analysis. Then, by using system clustering analysis method, geomorphologic types are grouped into divisions. The resulting geomorphologic regionalization hierarchy of Xinjiang includes three levels, i.e., macro-landform divisions, medium-landform divisions, and micro-landform divisions, containing 6, 23 and 200 types, respectively. This method makes it possible to digitally delimit geornorphologic regions. Comparison and verification show that the spatial precision of the boundaries of geomorphologic subareas in Xinjiang is very high.
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