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地理学报(英文版) ›› 2001, Vol. 11 ›› Issue (2) : 127-139.

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Spatial distribution of wind erosion and its driving factors in China

ZHANG Guo-ping¹, ZHANG Zeng-xiang¹, LIU Ji-yuan²

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Abstract

Based on remote sensing and geographic information system, the spatial distribution of nation-wide wind erosion is studied, and the 1:100 000 national map of soil erosion by wind in China is made. Wind speed, soil dryness, NDVI, soil texture and the slope of land surface are the key factors to wind erosion. The relations between wind erosion and each factor are discussed. The method of principal component is used to pick up the information included in the five factors, and the wind erosion dynamic index (WEDI) is established. Its comparison with the RS/GIS derived data shows that WEDI can reflect the potential capacity of soil erosion by wind. The dynamic process of the wind erosion is studied to reveal the distribution of the most intense wind erosion regions and the dominant factors in these regions. All these studies may greatly help the mitigation of wind erosion of soil.

Key words

remote sensing / geographic information system / wind erosion of soil / desertification control in China / WEDI

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[J]. Journal of Geographical Sciences, 2001, 11(2): 127-139

ZHANG Guo-ping, ZHANG Zeng-xiang, LIU Ji-yuan. Spatial distribution of wind erosion and its driving factors in China[J]. Journal of Geographical Sciences, 2001, 11(2): 127-139

中图分类号： P208 X87 S159

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