[1]TANG Zi-han,LI Yan-jun,CHEN Zhao,et al.Ecosystem Service Value in the Coal Mining Subsidence Area of Mountain Region, Southwest China—A Case Study in Songzao Mining Area of Chongqing City[J].Research of Soil and Water Conservation,2014,21(02):172-178.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
21
Number of periods:
2014 02
Page number:
172-178
Column:
Public date:
2014-04-28
- Title:
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Ecosystem Service Value in the Coal Mining Subsidence Area of Mountain Region, Southwest China—A Case Study in Songzao Mining Area of Chongqing City
- Author(s):
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TANG Zi-han1,2, LI Yan-jun1,2, CHEN Zhao1,3, LU Jia-hao1,2
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1. Chongqing Key Laboratory of Exogenic Mineralization and Mine Environment, Chongqing Institute of Geology and Mineral Resources, Chongqing 400042, China;
2. Chongqing Research Center of State Key Laborator of Coal Resources and Safe Mining, Chongqing 400042, China;
3. Guangdong Institute of Eco-environment and Soil Sciences, Guangzhou 410650, China
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- Keywords:
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ecosystem service value; millennium ecosystem assessment; coal mining subsidence area of southwest mountain region
- CLC:
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X171.1
- DOI:
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- Abstract:
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To study the land ecological service value because of underground coal mining, under the framework of Millennium Ecosystem Assessment (MA), by means of opportunity cost method and shadow project method, and based on the land use data of Songzao mining area in the year of 1999, 2004, 2008, which is the typical coal mining subsidence area of mountain region Southwest China, the dynamic valuation of ecosystem services of Songzao mining area was carried out in this paper, including food production, climate regulation, air regulation, water conservation, soil conservation, nutrient regulation, and waste degradation. The results show that farmland had the highest ecological service value in unit area, while coal mining subsidence area had the lower value which accounted for 47 percent of farmland. The loss of the economic value of ecosystem services in the studied area increased gradually from 1999 to 2008, which accounted for 10% of the total value. The destruction of land resources by coal mining was the main factor affecting the reduction of the ecosystem service value in the studied area and shift of land use type resulted from coal mining was the secondary factor. Land reclamation and ecological restoration are the important approaches to attack the land degradation problem and to achieve sustainable development in the mining area.