土壤环境质量评价标准选取的探讨

On selection of evaluation criteria of soil environment quality

以往土壤环境质量评价中，一般是以区域土壤背景值或评价区土壤对照点含量作为评价标准。文中提出了应用《中国土壤元素背景值》书中的成果，选取Ａ层土壤的中位值或Ｍ·Ｄ２或 ＋２Ｓ值为评价标准的探索性观点。

In conventional soil environment quality evaluation, the regional soil background values or the contents in the soil control points of evaluated region were used as evaluation criteria. In this paper, an exploratory viewpoint of adoption of the medians of 'layer A' soil or M . D￣2 or +2S as evaluation criteria was proposed based on the achievements indicated in the Background Values of Soil Elements in China.