南方某省土壤背景点的环境质量研究

为了详细了解南方某省的土壤背景值，在该省共布设468个背景点.通过采集样品和实验室分析，对这些背景点的污染情况进行全面评估.本文首先针对该省不同土地利用类型分析了土壤表层的无机元素和有机污染物水平，对比了不同剖面层次上污染物分布特征，然后对土壤背景环境质量进行了评价.最后将“七五”背景值数据与本次调查数据进行成对数据t检验，得出水田和旱地背景点土壤环境质量基本保持稳定，林地的大部分无机污染物含量有所下降.本文结论对于制定该省土壤环境指标、预测土壤污染趋势，正确评价土壤环境质量有重要作用.
To understand the soil background situation of a typical southern province,468 background points were established. Through sample collection and experimental analysis,the pollution situation of these background points was comprehensively investigated. At first,this study analyzed the inorganic elements and organic pollutants of different soil utilization types in this province,compared the pollutants distribution characteristics of different profiles,and then evaluated the soil environmental quality of background points. Finally,through t test of the“7th Five year Period”background data and the investigation data in this study,it is concluded that environment quality of paddy fields and dry land solid keeps stable and the inorganic pollutant content in forestry solid mostly declines.