摘要
本研究依据我国四种类型土壤中存在过量砷所产生的生态效应与环境效应，确定了砷的环境基准。分布在东南部的红壤和黄棕壤的基准为４５－５１ｍｇ／ｋｇ，分布在华北的褐土和西北的灰钙土为２１－２５ｍｇ／ｋｇ。这种分异型式主要受自然环境与土壤特征的制约，并与各类型土壤中砷存在形态密切相关。我国土壤环境复杂多样，确定全面的土壤基准时应重视其区域特征。
In this
study,environmental quality reference values of arsenic in four types ofsoils were established
according to the ecological and environmental effects of excessarsenic in soils.Regional
differentiation of the values is distinct,i.e.,the referencevalues for yellow-brown earth and red
earth distributed in the southeast part arein the range of 45- 51mg/kg,whereas those for
cinnamon soil and sierozem distri-buted in North and Northwest China are in the range of
21-25mg/kg.The distri-bution pattern is formed due to the variations of natural conditions and
soil enviro-nmental characteristics as well as arsenic species in different soil types.Soil
enviro-nment is complicated and diversified in China,therefore it is important to empha-size
regional characteristics for the establishment of reference values of various ele-ments in soils.
出处
《土壤学报》
CAS
CSCD
北大核心
1995年第3期341-348,共8页
Acta Pedologica Sinica
关键词
砷
基准
土壤污染
区域分异
Arsenic,Reference values,Soil pollution,Regional differentis-tion
