重塑木里矿区的高原生态

Core Insights - The article highlights the successful ecological restoration efforts in the Muli mining area of Qinghai Province, led by China Coal Technology and Engineering Group's ecological environment technology company, showcasing a significant transformation from a heavily damaged landscape to a thriving ecosystem [1][2][3] Group 1: Environmental Challenges - The Muli mining area, the largest coal mining region in Qinghai, suffered severe ecological damage due to high-intensity mining and illegal coal extraction, with vegetation coverage dropping from 80% to less than 15% [2] - The area experienced significant environmental issues, including surface subsidence, wetland degradation, and the formation of "black lakes" due to open-pit mining [2][3] Group 2: Restoration Efforts - In 2020, the Qinghai provincial government halted coal mining in the Muli area and initiated comprehensive ecological restoration, focusing on the heavily impacted Jiangcang area [2][3] - An expert team led by an academician from the Chinese Academy of Engineering was formed to assess the ecological damage and develop restoration plans [2][3] Group 3: Innovative Restoration Techniques - The restoration plan included techniques such as slope reshaping, pit backfilling, and soil reconstruction, which were recognized by the Qinghai provincial natural resources department [3][4] - Innovative construction methods were employed to ensure the structural integrity of the mining site while facilitating ecological restoration [4] Group 4: Vegetation Recovery - Starting in 2021, the project faced the challenge of re-greening the high-altitude mining area, which had no established technology for such efforts [5] - A soil improvement plan was developed using local resources, and six suitable plant species were identified to enhance vegetation growth [5][6] Group 5: Monitoring and Results - A small weather station and soil monitoring systems were established to collect data for ongoing vegetation management and climate monitoring [6] - The restoration efforts resulted in a stable vegetation community with an average density of 14,000 plants per square meter and 89% coverage, significantly improving the area's ecological stability [6] Group 6: Economic Benefits - The improved ecological environment has led to the growth of livestock and tourism industries in the mining area, generating over 7 million yuan in direct economic benefits annually and saving over 4 million yuan in ecological restoration costs [6] - The project has been recognized as a model case for ecological restoration in mining areas and received awards for construction quality in the coal industry [6]