RESOURCES AND ENVIRONMENT IN THE YANGTZE BASIN >> 2007, Vol. 16 >> Issue (1): 107-112.

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LAND COVER CHANGE BEFORE AND AFTER THE CONSTRUCTION OF THREE GORGES RESERVOIR WITHIN 10 YEARS

ZHANG Lei1,DONG Lixin1,WU Bingfang1, ZHOU Wancun2   

  • Received:1900-01-01 Revised:1900-01-01 Online:2007-01-20

Abstract:

This paper introduced quantitative approach to detect the change in land cover within 10 years before and after the construction of Three Gorges Reservoir. The Land Cover Classification System of Food and Agriculture Organization of the United Nations is available to divide 38 types of land cover at the scale of 150 000. It is indicated that the farmland accounted for 43.93% of the total land cover in the Three Gorges Reservoir area, and forest area for 29.03%. In Comparison with the land cover in 1992, the farmland reduced 1.13%, forest area reduced 0.13%, and the shrub area increased 0.58%. The factors influencing land cover change are mainly related to urban development, reservoir immigration, and policy of local ecology and environment.

Key words: Three Gorges Reservoir, land cover, remote sensing

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