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Metal Mine ›› 2024, Vol. 53 ›› Issue (3): 258-.

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Identification of Key Areas of Mine Ecological Restoration from the Perspective of Ecological Network Construction:A Case Study of Jianping County,Liaoning Province

PAN Bin1 ZHAO Yanling1,2 WANG Shaoqing1 LI Xinshuang1 HE Jinyi1 CHEN Chunfang1,2   

  1. 1. College of Geoscience and Surveying Engineering,China University of Mining and Technology-Beijing,Beijing 100083,China; 2. Institute of Land Reclamation and Ecological Rehabilitation,China University of Mining and Technology-Beijing,Beijing 100083,China
  • Online:2023-03-15 Published:2024-04-25

Abstract: The mining industry is an important part of the economic sources of resource-based city,and the development and restoration of mines is a key issue for the ecological security of resource-based city. This article is based on the perspective of mining and restoration of mines. It aims to identify the key areas of Jianping County′s mining ecological restoration through the construction of the ecological network. Using habitat quality model and ecosystem service value evaluation to identify ecological sources. The resistance surface is constructed and corrected by comprehensively considering the four aspects factors of natural factors,interference factors,the three controlled lines and mining risks. Ecological corridors were extracted using the minimum cumulative resistance model (MCR). Combined with the mine type,mining method and other factors within the ecological corridor and its buffer range,delineate the mining risk zonings,and clarify the priority of mine mining and restoration. The results showed that:① There were 28 ecological sources in the study area,with a total area of 1 139. 53 km2,and 1 006 km of ecological corridors were extracted. ② The low,medium and high risk areas of mining include production mines and closed mines respectively with an area of 17. 92、10. 62、25. 77 km2 and 22. 5、14. 10、21. 93 km2. ③ According to the degree of influence of the spatial distribution of mines on the ecological network,the mining priority of production mines and the restoration priority of closed mines are divided. Among them,priority mining area,restricted mining areas,the mining area is prohibited include production mine areas of 17. 93,11. 80,and 23. 63 km2,respectively. The very important restoration area,the im-portant restoration area,and general restoration area include closed mine areas of 19. 79 km2,16. 55 km2,and 22. 48 km2,respectively. Based on the above results,relevant regulation strategies and suggestions are put forward for three stages of mining.

Key words: mine ecological restoration,ecological network,ecological sources,mining resistance surface,repair strategy