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利用网格布点取样法采集抚顺矿区老虎台井田煤矿北部矸石回填复垦还田生态重建试验区不同覆土类型、不同土壤深度、不同覆土年龄的土壤样品 ,对矿山复垦土壤的重金属元素的时空变化进行了研究。结果表明 ,矸石回填覆土后 ,重金属元素含量呈逐年递减趋势 ;施 (培 )肥造成了重金属元素含量表层高于 30 cm和 60 cm土层 ;覆土中重金属元素主要来源于外界输入 ;矸石母质中的重金属不存在对覆土耕作层的污染问题
Spatial and temporal changes of heavy metal elements in reclaimed soil in mines with different soil types, different soil depths and different soil cover ages were collected by using the grid spot sampling method in the gangue in the northern part of the coal mine of Laohutai mine in Fushun mining area. Were studied. The results showed that the content of heavy metal elements decreased with the increase of the amount of heavy metal elements after the soil was backfilled. The content of heavy metal elements in the surface layer was higher than that in the 30 cm and 60 cm soil layers. The heavy metal elements in the soil cover were mainly from the external inputs. Of the heavy metal does not exist on the tillage farming layer pollution problems