Received date: 2009-09-01
Revised date: 2009-09-29
Online published: 2010-01-25
Supported by
Project of Investigation on Agricultural Geology & Eco-geochemistry, the Ministry of Land & Resources of P.R.C., No.121201511216
In this study,investigations were conducted on residues of organochlorine pesticides(OCPs) in soils in Zhanjiang city,China.A total of 61 soil samples were collected from sites which were representative of the region for analysis of contents of OCPs.And with the aid of multi-variate geostatistics and GIS,residues and spatial distributions of 17 types of OCPs were analyzed.Results show that the 17 OCPs were detected,various in contents of all the soil samples.HCHs and DDTs residues were below the criteria of the national standards for soil environment quality.Residue content of β-HCH was the highest among HCHs,indicating some recent input of HCH to soils,while for DDT,no sign of new input was found.Principal component analysis demonstrated that the 17 OCPs in the soil may have 6 major contributors,corresponding respectively to the use of industrial HCH and lindane,plant diseases and insect pests and the pesticide use,etc.By means of ordinary Kriging interpolation,studies on spatial distribution of OCPs showed that the 17 OCPs varied greatly in spatial distribution between types.
Key words： soil; OCPs; multivariate geostatistics; GIS; spatial distribution
MA Jin1; QIU Xinghua1; ZHOU Yongzhang2; WAN Hongfu3; ZHU Tong1 . Residues and Spatial Distributions of OCPs in Soils of Zhanjiang[J]. Acta Geographica Sinica, 2010 , 65(1) : 103 -112 . DOI: 10.11821/xb201001011
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