区域土壤环境质量评价基准研究

Study on the Reference Values for Regional Soil Environment Quality Assessment

选择科学的评价基准是区域土壤环境质量评价的关键,目前常用的土壤环境质量评价基准包括土壤环境质量标准(GB15618-1995)、相关行业或地方标准、土壤背景值、土壤临界值、土壤有效态含量、对作物的剂量效应值,其中以土壤环境质量标准(GB15618-1995)应用最为普遍。在分析了上列各类土壤环境质量评价基准优点与不足的基础上,指出在进行区域土壤环境质量评价时,应根据评价目的、评价对象、评价内容灵活选择评价基准。

Proper reference values is very important in the regional soil environment quality assessment.At present the common used reference values included the soil environment quality standard(GB15618),correlative industry standards or region standards,soil element background values,soil element critical values,soil element available contents,the dose-effect values for crops,and the soil environment quality standard(GB15168) were applied widely in the soil environment quality assessment.In this paper,the merits and demerits of these reference values were discussed.The results show that the determination of the soil reference values used in a regional soil environment quality assessment should be based on the goals,objects and contents of the assessment.