中国主要类型土壤若干重金属临界含量和环境容量的区域分异

本文通过8年研究结果,归纳、分析了中国的砖红壤、赤红壤、红壤、紫红土、黄棕壤、棕壤、黑土、褐色土、灰钙土等主要类型土壤中Cd、Cu、Pb、As的土壤临界含量和土壤环境容量分布特征,发现他们大多数或在相当大的程度上随土壤类型由南向北、由东向西的分布而分异,具有一定的地带性分异特征。Cd、Cu是由南到北、由东向西增大;而As则相反,由南到北、由东向西减小。

REGIONAL DIFFERENTIATION OF CRITICAL CONCENTRATION AND ENVIRONMENTAL CAPACITY OF SOME HEAVY METALS FOR THE MAIN SOIL TYPES IN CHINA

According to the results of a 8 year comparation study, the distribution of critical concentra-tion and environmental capacity of Cd, Pb, Cu, As in laterite, crimson earth, red earth, purplish soil, yellow brown earth, brown earth, black soil, dark soil and sierozem soil in China is discussed. The results show that for most of heavy metals, the critical concentration and environmental ca-pacity differ considenrable in different soil types which distribute from the south to the north and from the east to the west, and have a zonal differentiation. For Cd, Cu they are increased from the south to the north and from the east to the west, and for As they are decreased from the south to the north and from the east to the west.