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Spatial distribution of heavy metals in arable topsoil at a regional scale of county-a case of Fuyang county, Zhejiang Province of China
Author(s): 
Pages: 339-343
Year: Issue:  5
Journal: ACTA AGRICULTURAE ZHEJIANGENSIS

Keyword:  土壤重金属重金属污染空间变异地统计地理信息系统;
Abstract: 运用地统计学和GIS相结合的方法,以浙江省富阳市为例,研究了县域尺度内农田耕作层(0~20 cm)土壤中重金属含量的空间变异.结果表明,采用普通Kriging方法对富阳市农田表层土壤中Cu,Zn,Pb和Cd这4种重金属的含量进行局部空间插值后,前三种重金属呈现出一致的空间分布格局,而Cd的空间分布比较破碎.土壤中重金属含量超过国家土壤环境质量标准(GB15618-1995)二级的区域集中于厂矿周围.因此从空间分布情况来看,富阳市乡镇企业厂矿周围的农田土壤的重金属污染问题需要引起更多的关注,也为进一步对这些污染场地确定污染范围以及开展污染土壤的风险评估奠定了基础.
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