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在赣南非稀土矿区和四处不同稀土矿区内取样,用ICP-MS法测定岩石-土壤-铁芒萁系统中15个稀土元素的含量,并对其分布、迁移、累积特征进行了研究。结果表明:稀土元素在岩石、土壤各层含量由高到低的顺序为C(心土层)>A(表土层)>B(底土层)>D(成土母岩);在铁芒萁植物体内的分布规律是:轻稀土元素含量为叶>根>茎>叶柄;重稀土元素含量为根>叶>茎>叶柄;稀土元素演化、迁移的难易是由稀土元素的重轻所决定的;岩-土-芒萁系统各环节间稀土元素的含量模式基本相似,表征元素在岩石→土壤→植物大系统中存在着向量(非均衡性)关系。
The contents of 15 rare earth elements in the rock-soil-ferruginous shrub system were determined by ICP-MS and the distribution, migration and accumulation characteristics were sampled in the non-native South Jiangxi mining area and four different rare earth mining areas. The results showed that the sequence of descending order of contents of REE in rock and soil layers was C (heart soil layer)> A (topsoil)> B (bottom soil layer)> D (soil parent rock) The distribution of light rare earth elements was leaf> root> stem> petiole; the content of heavy rare earth elements was root> leaf> stem> petiole; the evolution and migration of rare earth elements were determined by the light weight of rare earth elements . The REE content patterns of rock-soil-mangrove system are basically similar, and there is a vector (imbalance) relationship between the characteristic elements in the rock → soil → plant system.