摘要
选择赣南富稀土矿区典型环境地球化学景观，研究了稀土元素在土壤中的含量、分布及赋存形态特征。结果表明，在各单元景观的土壤中稀土元素的含量分布具有规律性。土壤中稀土元素的分布模式继承了母岩的特征，具有明显的Eu负异常。但Ce在残积景观和堆积淋溶景观的土壤中呈现正异常，而在水上景观土壤中出现Ce负异常。稀土元素在各单元景观土壤中的赋存形态特征也不同。总体上，稀土元素主要以可交换态和有机结合态（主要是松结有机态）形式存在于矿区土壤中，具有很高的活性。
The content distribution and speciation of rare earth elements (REE) of soils in a typical geochemical landscape (REE mine area) in southern Jiangxi Province were studied. Soil samples were collected from three elementary landscapes (eluvial landscape, accumulative leaching landscape and superaqual landscape). Results show that the content and distribution of the REE were different in soils of three elementary landscapes. There occurs Ce positive anomaly in soils of eluvial landscape and accumulative leaching landscape, but Ce occurs negative anomaly in superaqual landscape. Speciation of the REE in soils of different elements landscape is various. In short, exchangeable and bound to organic matter REE are the main forms of the REE in soils, and the REE of soils is very active in the studied area
出处
《土壤学报》
CAS
CSCD
北大核心
1999年第4期492-498,共7页
Acta Pedologica Sinica
基金
国家自然科学基金!19392100
49771070
关键词
稀土元素
土壤
分布
形态
景观
地球化学
Rare earth elements(REE), Soils, Distribution, Speciation, Landscape
