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| Influence of coal exploitation on forest ecosystem in Shanxi |
| Li Xinping1,2,Zhu Jinzhao1,Chang Jianguo2 |
| 1.Key Laboratory of Soil and Water Conservation & Desertification Combating,Ministry of Education,College of Soil and Water Conservation,Beijing Forest University,10083,Beijing;2.Forestry Institute in North China,CAF,030012,Taiyuan: China |
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Abstract In order to open out the influence of coal exploitation on forest ecosystem in Shanxi,and provide basic datum for vegetation restoration in mineral area,the cosmically coal exploitation area,exploitation empty area and area impacted by coal exploitation obviously were selected as investigating region,and regional Pinus tablaeformis forest was researched as main stand.Combining with existing investigation datum and remote sensing information,contrast of forest ecosystem between those area and area approximating with non-exploitation area was analyzed.The results indicated that the forest damaged by coal exploitation was 133.68km2.The Hg and Cd content of soil in coal exploitation area were 3.26 and 2.73 times respectively as much as those of soil mean content in Shanxi.The soil water content of ubac and adret in coal exploitation area declined 18.0% and 23.4% respectively as much as those in non-exploitation area.Contrast with non-exploitation area,the biomass and productivity of Pinus tablaeformis forest in coal exploitation decreases 15.78% and 15.30%（respectively）.The trend of species abundance,diversity and function of soil and water conservation of Pinus tablaeformis forest in coal exploitation were all descendent.
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Received: 03 August 2005
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