摘要
本文通过八年研究结果，分析了土壤区域、地带性土壤类型分布、土壤ｐＨ、碳酸盐、有机质等因素对Ｃｄ、Ｃｕ、Ｐｂ、Ａｓ四种元素土壤临界含量和环境容量区域分异的影响，其中以土壤ｐＨ和土壤类型分布是主要影响因素。Ｃｄ和Ｃｕ的土壤临界含量、环境容量和土壤ｐＨ间呈负相关性，并随土壤类型由北到南的分布而减小。土壤Ａｓ的临界含量和环境容量随土壤ｐＨ增大和土壤类型由南到北的分布而增大。但它们之间无相关性。
According to the
results of an eight-year study,the effects of soil region, thedistribution of zonal soil type and
pH,carbonate and organic rnatter on regionaldifferentiation of critial concentrations and
environmental capacities of Cd,Pb,Cu andAs in soils are analysed,and the PH value of soil and
the distribution of soil typeare concidered as the main influenting factors. there was a negative
correlation bet-ween the critical levels and environmental capacities of Cd and Cu in soils and
thepH of soils.The critical levels and environmental capacities of Cd and Cu in soilsdecreased
with the distribution of soil types from south to north.The critical levelsand environmental
capacities of As in soils increased witb the soil pH and the dist-ribution of soil types from south
to north,but there was no correlation betweenthem.
出处
《土壤学报》
CAS
CSCD
北大核心
1994年第2期161-169,共9页
Acta Pedologica Sinica
基金
国家"七五"科技攻关项目
关键词
土壤临界含量
重金属
环境容量
Soil critical level,Soil
environmental capacity,Heavy metal
