GIS & AHP-Based suitability evaluation on ecology reclamation of mining subsided zones

With the rapid development of urbanization in China, the land demand is strengthened dramatically for urban development. Specifically, coal mining cities causes internally a mass of mining subsidence zones for the long-term coal mining, which not only causes wastes of land resources, but also destroys the city and its surrounding ecological environment. With view to features and limitations of subsided land destroying in coal mining cities, the article construct a GIS & AHP-based suitability evaluation on ecology reclamation of mining subsidence zones. With a platform as GIS combining with AHP, the covering area and land in the study will be divided into 4 categories of suitable zone for ecology reclamation by constructing a system of evaluation and GIS weighted stacking analysis, which is also integrating qualitative with quantitative evaluation. Finally in terms of sustainable development for various suitable lands, the article proposes some recommendations on the reclamation and use of ecological land, as well as the protection of ecological environment.