2020•DOAJ (DOAJ: Directory of Open Access Journals)Requires access
Incremental evaluation of the ecosystem service value in the ecological restoration area of an iron mine
YEERNAER Humaerhan, MA Wei-bo, Xianghua Xu, Dilinuer Tuoliewubieke, Ying Fang, Haidong Li
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Abstract
Mine ecological restoration can be divided into in situ restoration and alternative restoration of abandoned land, which is an important way to reduce the damage of mineral resources extraction to the ecological environment. Using remote sensing and GIS technology, three kinds of ecological restoration, namely slope greening of tailings bank, construction of wetland, and afforestation of an iron and steel enterprise in Inner Mongolia were selected. The ecosystem service value of different types of ecological restoration areas, which were previously iron mines, were investigated and evaluated. The results showed that:The area of the three ecological restoration areas increased in different degrees in 2016-2018, and the proportion of grassland area in the green area of the slope increased by 85.4 per cent compared with 2016; The wetland area in the constructed wet area increased by 33.3 per cent compared with 2016; The forested area of the afforestation area increased by 38.4 per cent compared with 2016; And the ecological restoration area of the green slope area and the artificial wet area gradually increased from east to west, and the ecological restoration of the afforestation area increased from east, west to the middle. The value of ecosystem services in the three ecological restoration areas increased in different degrees from 2016 to 2018; The total value of ecosystem services increased by 5.21 million yuan compared with 2016, and the value of ecosystem services in the three ecological restoration areas increased by 2.18 million, 2.59 million yuan, and 436 900 yuan; The value of ecological services for regulating green areas in the slope increased by 1.42 million yuan compared with 2016; The value of ecological services for regulating wetland services increased by 1.66 million yuan compared with 2016; And the value of the adjustment service in the afforestation area increased by 277 500 yuan compared with the value of 2016. The study provide a practical basis for mining enterprises to implement their main responsibility on ecological environment governance and actively perform mine ecological restoration.