摘要
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 ;
The mesh spot pattern is used for sampling covering soil at ecological environment recovering test field, which is reclamation area filled by coal mining wastes for cropland in the north of Jingtian coal mine, Laohutai, Fushun. The soil samples are taken at different locations, including three kinds of covering soil, three different depth soil layers and four different age of covering soils. The space time variation of heavy metal elements content in reclamation soil is studied. The results indicate that the content of heavy metal elements is decreasing following the time; The determinant reason of the content of heavy metal elements at 60cm depth layer less than that of at 30cm depth layer and surface is fertilizer and manure application; The metal elements mainly come from external environment; There is no metal pollution in plough layer of covering soil coming from mother material (coal mining wastes).
出处
《水土保持学报》
CSCD
北大核心
2000年第4期30-33,共4页
Journal of Soil and Water Conservation
基金
中国科学院资源与生态环境研究重点资助项目!"东北危急矿 (林 )区环境
经济协调发展及生态重建研究"(编号 :KZ95 2 - J1- 2 13)
关键词
土壤重金属元素
矿山复垦
时间变化
空间变化
覆土
covering soil
heavy metal elements
Variation of space time
reclamation of coal min<
