Research on the impact of mine ecological restoration on ecosystem services in Xingguo County,Jiangxi Province
Taking Xingguo County and Xingguo County mine ecological restoration area as the research object,this paper establishes an evaluation model of ecosystem service quality based on GIS spatial analysis technology,evaluates the ecosystem service quality of Xingguo County and Xingguo County mine ecological restoration area in 2019 and 2021,and discusses the impact of land use type change on ecosystem services before and after the restoration of the mine ecological restoration area.The results show that five ecosystem services in Xingguo County decreased in 2021 compared with that in 2019.From the perspective of spatial distribution,grain production services are widely distributing with scattered high and low values.The high value of water conservation services is concentrated in the north and northeast of Xingguo County,the high value of soil conservation services is less distributed in the central and southern parts of Xingguo County,and the high value of carbon sequestration services and oxygen release services is concentrated in the central part of Xingguo County.After the restoration,the mining land in Xingguo County was converted into arable land and forest land,and the grain production increased by 6.17 t,carbon sequestration increased by 246 992.43 t·C,oxygen release increased by 187 892.85 t·O2,and soil conservation increased by 5.79 t.Water conservation was reduced by 3.913×107 m3.The research shows that the ecological restoration project in the mine ecological restoration area leads to the change of land use status to a large extent,which affects the ecological environment in the region.Arable land and forest land contribute significantly to regional ecosystem services.
mining areaecological restorationecosystem serviceland use changecarbon sequestration
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