RESOURCES AND ENVIRONMENT IN THE YANGTZE BASIN >> 2006, Vol. 15 >> Issue (Sup1): 120-124.

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SPATIAL AND TEMPORAL CHANGE ANALYSIS OF SOIL EROSION FROM 1995 TO 2000 IN QINGJIANG RIVER BASIN,HUBEI PROVINCE

WEI Xianhu1,2,DU Yun1,2,CAI Shuming1,2,XUE Huaiping1,2,LIU Tao1,2,3   

  • Received:2006-09-01 Revised:2006-12-15 Online:2006-12-20

Abstract:

Soil erosion is the direct cause of soil and water loss. Qingjiang River Basin lies in the southwest part of Hubei Province. The severe soil erosion is the main cause of environment deterioration and is also one of the main limiting factors on the development of economy in this area. Thus,the authors analyze the soil erosion dynamics in the Qingjiang River Basin using relief maps and remote sensing images of different periods. From 1995 to 2000,the soil erosion area has been reduced by 10.98 km2,or 0.06%,while soil erosion area still accounts for 40.70% of the total land area of the region.This shows that the soil erosion in this region is still severe. After five years of soil and water conservation control and ecological environment construction,the control work in the zones of the intensive degree and very intensive degree is steadily making progress,while its not in other zones. All these imply that for the natural processes and the human activities,both the construction and destruction are still existing,and the degree of soil erosion is increasing,so some countermeasures for treating soil erosion in this region should be taken.

Key words: soil erosion, Qingjiang River Basin, “3S&rdquo, techniques, spatial and temporal change

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