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| Analysis of current situation and trend of land desertification in coal mine area of Shanxi Province |
| Zhang Chengliang |
| Shanxi Academy of Forestry Science,030012,Taiyuan,China |
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Abstract Taking the coal mining area of Shanxi Province as the studied area,the grade,bound,distribution of land desertification was analyzed which was brought by coal mining.The mathematics model of subsidence and distortion in mountain areas and the statistics method were used to forecast the land failure of coal mining in the next 5 years.The results showed that the area of desertification brought by coal mining from 1949 to 2004 added up to 1?151.9km2,and the collapsed area accounted for 1113.8km2,the area of cast-off is 15.1km2,the area destroyed by opencast working is 23.0km2.In the collapsed land,the ploughland accounted for 42.8%,unused land accounted for 43.2%,and other used land accounted for 14%.According to the degree of the collapsed land,slightly degree accounted for 42.6%,medium degree accounted for 39%,severe（degree） accounted for 18.4%.The forecasting results showed that until 2010 the total area of land which is（destroyed） in Shanxi coal mining will reach 1853.9km2,and the collapsed land will account for 1?811.7?km2.This paper offered basic data and decision-making gist for the amelioration to desertification,eco-environmental evaluation,and sustainable eco-system reconstruction of coal mining in Shanxi Province.
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Received: 15 May 2006
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