中国土壤风力侵蚀空间格局及驱动因子分析

doi:10.11821/xb200102003

Acta Geographica Sinica ›› 2001, Vol. 56 ›› Issue (2): 146-158.doi: 10.11821/xb200102003

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Spatial Distribution of Aeolian Erosion of Soil and Its Driving Factors in China

ZHANG Guo ping¹, ZHANG Zeng xiang¹, LIU Ji yuan ²

1. Institute of Remote Sensing Application, CAS, Beijing 100101, China;
2. Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China

Received:2000-12-06 Revised:2001-01-12 Online:2001-03-15 Published:2001-03-15
Supported by:
The National“Ninth Five Year”Plan,No.96-B02-01;The Project of Minstry of Water Resource on national soilerosion remote sensing investigation

Abstract

Abstract: Based on the remote sensing and geographic information system, the spatial distribution of national wide soil erosion of wind are studied, and the 1:100 000 national soil map of wind erosion is made. Wind speed, soil dryness, NDVI, soil property and land surface slope are the key factors to the soil wind erosion. The relations between the soil 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 Soil Wind Erosion Dynamic Index (SWEDI) is established. Its comparison with the RS/GIS derived data shows that SWEDI can reflect the potential capacity of the soil erosion by wind. The dynamic process of soil wind erosion is studied, to reveal the distribution of the most intense heaviest soil erosion regions and the dominant factors in these regions. All these studies may greatly help for the mitigation of the aeolian erosion of soil.

Key words: remote sensing, geographic information system, soil aeolian erosion, SWEDI

CLC Number:

S157

ZHANG Guo ping, ZHANG Zeng xiang, LIU Ji yuan . Spatial Distribution of Aeolian Erosion of Soil and Its Driving Factors in China[J].Acta Geographica Sinica, 2001, 56(2): 146-158.

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Spatial Distribution of Aeolian Erosion of Soil and Its Driving Factors in China

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