Research On Ecological Restoration Strategies Of Mining Areas In Changzhi Area Based On Ecological Network

It is of great academic value and practical significance to discuss how to adopt different strategies by manpower at the city scale to guide the natural restoration of mines.This paper takes Changzhi Area,Shanxi Province as the research area,with the concept of "nature-based restoration plan",through identifying ecological elements,constructing an ecological security pattern,and superimposing mine elements to study the ecological restoration strategies of Changzhi Area’s mines.This paper deals with the satellite remote sensing image of Changzhi Area,using MSPA analysis,Conefor analysis,circuit theory and other methods.Identified the ecological elements of Changzhi Area,combined with pinch points and obstacle points analysis,proposed protection strategies for the important ecological elements of Changzhi Area,and constructed the ecological security pattern of Changzhi Area.Based on the ecological security pattern of Changzhi Area,analyze the impact of mines on the ecological security of Changzhi Area.From the perspective of ecological element protection,three guiding methods are adopted for these mining areas: natural restoration,auxiliary regeneration,and ecological reconstruction.At the same time,the current situation of land use in the mining area is superimposed,and a restoration strategy is proposed for the mines in Changzhi Area.The main results are as follows:(1)Identify the ecological source.Through MSPA analysis,the main ecological core areas in Changzhi Area are identified,and Conefor2.6 software is selected,based on the ecological core areas identified by the MSPA method,and the patch importance index(d PC)index of the core area is calculated according to the d PC value.Sorted and selected 11 ecological sources in Changzhi Area.(2)Identify potential corridors and river corridors.A total of 15 potential corridors were obtained.Comparing the bridge area identified by MSPA,it can be concluded that 11 corridors already exist,these 11 corridors need to be protected,and the other 4 corridors need to be further optimized.The rivers in Changzhi Area have good continuity.The two major water systems of Qin River and Zhuozhang River connect all the ecological sources of Changzhi Area and form natural corridors.(3)Corridor pinch points and obstacle points analysis.A total of 37 pinch points and 48 obstacle points were identified,and the main land use types of pinch points and obstacle points were identified through remote sensing image maps.The analysis results show that the pinch points are mainly composed of the farmland shelterbelts in Changzhi Area;the obstacle points are mainly distributed in the human activity area on the ecological corridor,and the land use type is mainly cultivated land.(4)Establish an ecological security pattern in Changzhi Area.Put forward the ecological element protection strategy,and build the “one screen,one area,two belts” ecological security pattern of Changzhi Area according to the ecological security requirements of Changzhi Area.(5)Based on the ecological security pattern,the 65 mining areas that affect the ecological security of Changzhi Area are proposed to guide natural restoration,auxiliary regeneration,and ecological reconstruction.At the same time,the mining areas are matched with the current status of land use,and the rehabilitation of these mining areas is proposed.It is the restoration target of the original landform.