title: [Evaluation on environmental quality of heavy metals in soils and vegetables based on geostatistics and GIS].
abstract: Contents of heavy metals (Pb, Zn, Cd, Cu) in soils and vegetables from Dongguan town in Shangyu city, China were studied using geostatistical analysis and GIS technique to evaluate environmental quality. Based on the evaluation criteria, the distribution of the spatial variability of heavy metals in soil-vegetable system was mapped and analyzed. The results showed that the distribution of soil heavy metals in a large number of soil samples in Dongguan town was asymmetric. The contents of Zn and Cu were lower than those of Cd and Pb. The concentrations distribution of Pb, Zn, Cd and Cu in soils and vegetables were different in spatial variability. There was a close relationship between total and available contents of heavy metals in soil. The contents of Pb and Cd in green vegetables were higher than those of Zn and Cu and exceeded the national sanitation standards for vegetables.
authors.affiliation: Department of Environmental Science and Engineering, Hangzhou Dianzi University, Hangzhou 310018, China. zhmxie@sina.com
authors.forename: Zheng-miao
authors.initials: ZM
authors.lastname: Xie
authors.forename: Jing
authors.initials: J
authors.lastname: Li
authors.forename: Bi-ling
authors.initials: BL
authors.lastname: Wang
authors.forename: Jian-jun
authors.initials: JJ
authors.lastname: Chen
mesh_terms: D002681:China; D004784:Environmental Monitoring / Q000379:methods; D004785:Environmental Pollutants / Q000032:analysis*; D005506:Food Contamination / Q000032:analysis / Q000517:prevention & control; D040362:Geographic Information Systems / Q000706:statistics & numerical data; D055593:Geological Phenomena; D005844:Geology; D019216:Metals, Heavy / Q000032:analysis*; D012987:Soil / Q000032:analysis*; D014675:Vegetables / Q000737:chemistry*
chemical_list: D004785:Environmental Pollutants; D019216:Metals, Heavy; D012987:Soil