灰钙土重金属生态基准

Ecological criteria for heavy metals in sierozem

提出从维护土壤生态系统整体结构与功能出发，以保护士壤生产力为核心，保持系统的良性循环为目标，兼顾到对其它环境要素，特别是水环境的影响，确定灰钙土中重金属生态基准的原则、依据和方法，并建立了Ｃｄ、Ｃｕ、Ｐｂ、Ａｓ的生态基准。在此基础上制定的土壤标准，将能更好地保护土壤环境。

In order to attain the goals of preserving the overall structure and function of soil ecological system,protecting soil productive capacity, maintaining the favourable cycle of the system and preventing contamination of various environmental compartments, especially the aquatic environment, the principle, basis and methodology for establishing heavy metals'ecological criteria in soil are put forward. The ecological criteria for Cd, Cu, Pb and As are established in this paper.