Hierarchical extraction of land cover information from fully polarimetric SAR image of coal mining areas Major ecological and environmental problems and the ecological reconstruction technologies of the coal mining areas in China The comprehensive assessment method on the ecological environment in the coal mining areas Assessments of integrated ecosystems in mining areas based on emergy analysis Effect of cracks on soil characteristics and crop growth in subsided coal mining areas Impact of reclamation-driven land use change on vegetation carbon store in mining areas Ecological efficiency analysis of the circular economy system in mining area based on emergy analytic approach Effects of AMF on soil improvement and maize growth in mining area under drought stress Assessment indicator system of eco-industry in mining area Application of arbuscular mycorrhizas in ecological restoration of areas affected by coal mining in China