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| Stress threshold of ecosystem service affected by coal mining in Huaibei City |
| WAN Lun-lai, LI Kang-wei, NA Ren, YANG Jun |
| School of Economics, Hefei University of Technology, Hefei 230002, China |
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Abstract This paper aimed to reveal the threshold effect of coal mining on ecosystem services in coal resource-based cities. Based on the stress threshold model of ecosystem services affected by coal mining, the stress threshold in Huaibei City was estimated from three perspectives of land destruction, groundwater resource destruction and air pollution to explore the temporal variation of stress effect of ecosystem service from 1990 to 2016. Results showed that coal mining had significant threshold effect on ecosystem service in Huaibei City, and the stress thresholds of land destruction, groundwater resource destruction and air pollution were 1803.19 hectares, 332.5323 million tons and 888.81 billion standard cubic meters, respectively. Meanwhile, the stress effect showed stage characteristics, during 1990~2009, ecosystem service was in good condition and none of the above three thresholds were exceeded; after 2010, groundwater resource of the region was affected by coal mining which exceeded the corresponding threshold and caused the degradation of ecosystem services. Fortunately, the worsening trend had slowed down since 2015. Therefore, this region must accelerate the construction of green mining areas, and strengthen the ecological management, and strive to prevent the stress effect of coal mining from exceeding the corresponding threshold to ensure the coordinated and sustainable development of economic growth and ecological environment.
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Received: 04 March 2019
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