Abstract:
Reutilization of a large area of mining wasteland is a realistic way to meet the demand of mining resource economic transformation and spatial structure optimization for mining wasteland reuse. Confirming reasonable reuse type of mining wasteland is the basis and precondition for mining wasteland consolidation. Changhe basin in Zezhou County, Shanxi Province is taken as a case study, which has 120 mining wastelands caused by coal mine integration in 2015 with the area of 345 hm
2. The data used in this paper are collected from the field survey on mining wasteland distribution(July, 2015), Zezhou land use planning(from 2005 to 2020), the peasant household survey in study area(July, 2015), the 13th five-year Zezhou industry planning, Zezhou ecological function area report(2007). Firstly, the method of identifying mining wasteland reuse type is presented in this paper based on the competitiveness evaluation for non-agricultural, agricultural and ecological mining waste land. The evaluation index system should be built first to determine the possible reuse types of mining wasteland, which includes 2 aspects, i.e. suitability and driving force, and 6 specific indices: natural factor, location, demographic factor, economic factor, policy and public participation. Then, the competitiveness evaluation model should be established to identify intensity, spatial distribution and expected land use change trend for each type of mining waste land. Lastly, the triangle model is used to assess the reuse types of mining wasteland based on 21 types of land use competitiveness combination. In this paper, the boundary map of administrative villages in study area and the distribution map of coal mining wasteland are superimposed, and the mining wasteland patch is taken as the specific evaluation unit. The weight of each index is determined by an analytic hierarchy process. Quantification of each index is to determine the land types of mining wasteland in the study area. The result shows that: 1) Based on the spatial distribution analysis, non-agricultural mining wastelands those have high competitiveness are adjacent to county or provincial road. Spatial distribution of agricultural mining wastelands those have high competitiveness was adverse to that of high competitiveness non-agricultural mining wastelands, and in accordance with that of ecological mining wastelands those have medium competitiveness. The spatial distribution can reflect the competition state between reuse land types; 2) As for the judgment results of land reuse types, there are a total of 120 mining waste lands mainly distributed in 34 villages in study area. Among them, 50% can be converted to construction land, the area of which is 191.53 hm
2. These mining wastelands are mainly located in these regions which have a long history of coal mining and whose economic level and population density are high. In addition, they lie at or are adjacent to the core of villages and towns or main roads; 40% can be converted to agricultural land, which have an area of 115.19 hm
2 and are located near the village or water; 10% can be converted to ecological land, which have an area of 38.28 hm
2 and are located in the mountainous areas where the economic level and population density are low. By investigation, mining waste lands in the study area are mostly reused as construction land. The research result can provide the theoretical support for the determination of the consolidation planning of coal mining wasteland in the study area.