Abstract

Variances in the natural-environmental and artificial factors of the mining industry and of mining production were analyzed to achieve scientifically the ecological restoration of the Lu’an mining land system. The eco-environmental pressure of the evaluation index system was established. Each unit of land system was exposed to a different eco-environmental pressure, which resulted in differences in land eco-function performance. The land system can be categorized into the productive, protective, consumptive, and mixed land types based on eco-environmental performance. The Lu’an mining area was divided into four regions, namely, the uncultivated land consumptive zone (23.33 km², 4.09%), the wetland and mining subsidence protective zone (109.23 km², 19.16%), the flatland productive zone (373.89 km², 65.57%), and the artificial mixed zone (63.76 km², 11.18%), and a total of eleven eco-function types. The regions’ area ratios were 6.50, 19.16, 8.77, and 65.57%, respectively. Productive and consumptive land was oversized, whereas mixed and protective land was very small, indicating an undesirable land use system. Based on the analysis, an integrated model involving 19 models (e.g, shrub and grassland rehabilitation, steep slope protection, ecological village building model, etc.) was proposed for the development of the local eco-environment based on the eco-function type of mining land.

Key words: Mining area, ecological division, eco-function type, eco-environmental pressure, China,