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| Review of studies on reclamation and ecological restoration of abandoned land of mine |
| Wei Yuan1, Gu Hongbo2, Xue Liang1, Jiang Zeping1, Zhou Jinxing3, Zheng Shiwen4, Cui Ming3, Yang Jianli5 |
| 1.Research Institute of Forestry, Chinese Academy of Forestry, State Key Laboratory of Tree Genetics and Breeding, 100091, Beijing; 2.Academy of Forest Inventory and Planning, State Forestry Administration, 100714, Beijing; 3. Institute of Desertification Studies, Chinese Academy of Forestry, 100091, Beijing;4.Environment protection Science Research ＆ Design Institute of Ningbo, 315100, Ningbo, Zhejiang; 5.Lu'an Environmental Energy Development Co., Ltd. , 046031, Changzhi,Shanxi: China |
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Abstract Mining exploitation not only caused occupation of cultivated land and environmental damage, but also induced a series of social problems. In the last decades reclamation and ecological restoration of abandoned land of mine have become hot issues in interdisciplinary research. Compared with developed countries, reclamation of abandoned land of mines in China has the characteristics of lower rate and poorer quality. The main content of reclamation and ecological restoration of abandoned mining area includes three aspects as follow, soil reconstruction; ecological restoration; control and treatment of wastewater. Main techniques of soil reconstruction consist of physical, chemical and biological treatments. Their aims are to reconstruct the suitable soil profiles, as well as physical and chemical characteristics. The technique of removing heavy metal pollution is also the main content of soil reconstruction. Bio-remediation techniques can be divided into phytoremediation, soil fauna restoration, soil microbes and micorrhizal remediation techniques. The paper analyzed the necessary of land reclamation and ecological restoration on abandoned mines, elaborated the theories of ecological restoration of abandoned land of mine, introduced the research status at home and abroad, especially summarized the technologies of the ecological restoration and land reclamation of abandoned mines. It also indicated the importance of identification of capital source, as well as the establishment and improvement of management mechanism. Study on the mechanism of ecosystem environment influence of abandoned land should also be strengthened. 3S technology and information system technology are required to be adopted in monitoring, supervision and evaluation of reclamation work in the area of abandoned mines. It is strived to make technological breakthrough in alleviating the environmental damage for mining area, as well as to establish the theoretical system and technological standard for reclamation and ecological restoration in the area of abandoned mine.
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Received: 21 March 2011
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