在国家科技基础性工作专项的支持下,西部重点矿区土地退化因素调查工作于2014年初正式启动。按照总体调查方案,需要对51个煤矿区作一般性调查,对12个重点煤矿区、17个重点金属矿山和8个重点非金属矿山进行重点调查,对2个煤矿区开展土地退化因素跟踪监测,分为5个课题进行。项目启动近2 a来,项目组重点编制了调查技术方案与规程草案,搭建了调查矿区的自然地理与环境本底数据库平台,完成了近60%的野外调查任务,初步掌握了重点煤矿区、金属矿山和非金属矿山的土地退化特点、规律和驱动因素。调查结果表明,不同的矿产资源开发引起土地退化的因素不同,位于不同地理区域的矿区损毁的土地类型也不同。
With the support of the Special Foundation for State Major Basic Research Program of China, investigations ofdriving factors of land degradation in major mining areas in West China were launched in early 2014. According to the overall investigation plan, 51 coal mining areas are to be generally surveyed, 12 key coal mining areas, 17 key metal mining areas and 8 key nonmetal mining areas to be investigated in detail, and 2 coal mining areas to be tracked and monitored with focus on factors of land degradation, thus forming five subprojects. In the 2 years since this plan was launched,the research group of this project has finished the compilation of a technical scheme and regulations for the survey, theconstruction of a platform for physical geography and environment background database of the mining areas, the survey andinvestigations of nearly 60% of tasks and acquisition of primary mastery of the characteristics, and the rules and drivingfactors of the land degradations in important coal, metal mines and nonmetal mining areas in West China. Results of thesurveys and investigations show that driving factors of land degradation varied with the type of the mine resources exploitedand so did the type of land destruction with geographic location.