This project is one part of "Thirteen Five" national key research and development program approved project whit the NO. of 2016YFC0501100. Taking account of the ecological restoration technology development and engineering practice problems of large-scale coal-power bases in eastern steppe of China, including ecology, mining, environmental science, protoculturescience and other subject, thetheoretical analysis, experimental research, survey and monitoring and other meanswill be used tofind out thetwo scientific questions caused by coal mining:one for influence andcumulative effect ofgrassland ecosystems (water, soil, vegetation), and the other for regional ecological stability and security coordination mechanisms at the regional ecological. The influence boundary of regional groundwater and vegetation populations with coal exploitation will be clarified. A series ofkey technologies, such as ecological cumulative effect evaluation method, dynamic monitoring of regional water resources, water resources conservation and utilization, coal mine land reclamation, microbial bioremediation, landscape restoration, will be established. The integration mode with basic theory, key technology integration and demonstration projects will be developed, which will provide theoretical and technical support for the eastern prairie region of coal exploitation and ecological restoration.