State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, 100085 Beijing, China.
Environ Geochem Health. 2010 Oct;32(5):441-9. doi: 10.1007/s10653-010-9287-9. Epub 2010 Feb 13.
Spatial variability and temporal trends in concentrations of the organochlorine pesticides (OCPs), hexachlorocyclohexane (HCH) and dichlorodiphenyltrichloroethane (DDT), in surface soils around Beijing Guanting Reservoir (GTR) were studied in 2003 and 2007. Concentrations of the two OCPs in soils around GTR were generally less than reference values set by the Chinese government for the protection of agricultural production and human health. Among the OCPs, β-HCH and p, p'-DDE were the two predominant compounds. This result indicates that the HCH and DDT residues in soils were primarily from historical use. Based on kriging, a spatial distribution of HCH and DDT around the GTR was observed. Spatial variability indicated how HCH and DDT had been applied and been distributed in the past. Between 2003 and 2007, concentrations of HCH and DDT decreased more rapidly in orchard soils than those in fallow soils.
2003 年和 2007 年，研究了北京官厅水库（GTR）周围表层土壤中有机氯农药（OCPs）、六氯环己烷（HCH）和滴滴涕（DDT）浓度的空间变异性和时间变化趋势。GTR 周围土壤中这两种 OCPs 的浓度通常低于中国政府为保护农业生产和人类健康而制定的参考值。在 OCPs 中，β-HCH 和 p，p'-DDE 是两种主要的化合物。这一结果表明，土壤中的 HCH 和 DDT 残留物主要来自历史使用。基于克立格插值法，观察了 GTR 周围 HCH 和 DDT 的空间分布。空间变异性表明 HCH 和 DDT 过去是如何应用和分布的。在 2003 年至 2007 年期间，果园土壤中 HCH 和 DDT 的浓度比休耕地土壤中的浓度下降得更快。
