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[1]ZHANG Jian-guo,LIU Shu-zhen.Spatial Distribution Characteristics of Freeze-Thaw Erosion in Tibet[J].Research of Soil and Water Conservation,2008,15(05):1-6.

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Spatial Distribution Characteristics of Freeze-Thaw Erosion in Tibet

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 15 Number of periods: 2008 05 Page number: 1-6 Column: Public date: 2008-10-20

Title:: Spatial Distribution Characteristics of Freeze-Thaw Erosion in Tibet

Author(s):: ZHANG Jian-guo¹, LIU Shu-zhen²; 1. School of Geography, Nantong University, Nantong, Jiangsu 226007, China;
2. Institute of Mountain Hazards and Environment, CAS, Chengdu 610041, China

Keywords:: Tibet; freeze-thaw erosion; spatial distribution

CLC:: S157.1

DOI:: -

Abstract:: Tibet is the main distribution area of freeze-thaw erosion and the most serious damaged region by freeze-thaw erosion in China. In order to prevent and control the occurrence and development of the freeze-thaw erosion effectively, it is necessary to understand the present situation and spatial distribution characteristics of freeze-thaw erosion in Tibet. Based on the classification and assessment results of the freeze-thaw erosion, this paper comprehensively discussed the spatial distribution characteristics of freeze-thaw erosion in Tibet. The results show: (1) The distribution of freeze-thaw erosion is very extensive in Tibet, freeze-thaw erosion area is 664 317.4 km², accounting for 55.3% of the total local land area. (2) The regional differentiation of freeze-thaw erosion is obvious. Not only the different intensity freeze-thaw erosion has the different regional distribution characteristics, but also the difference of the freeze-thaw erosion distribution in different region is also obvious, each region has its own spatial distribution characteristic, which is different with other regions. (3) The vertical differentiation of freeze-thaw erosion is also obvious in Tibet. The percentage constitutes of different intensity freeze-thaw erosion orderly change along with altitude, and the freeze-thaw erosion area is small and the intensity is heavy in high elevation region and low elevation region, and the freeze-thaw erosion area is large and the intensity is slight in middle elevation region.

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