REE Biogeochemistry of Soil-Vegetation System in Dabaoshan Polymetallic Mine
Wang Juan
Wang Zhenghai
Geng Xin
He Fengping
Zu Yuchuan
Wang Lei
Abstract：REE biogeochemistry is important in understanding the occurrence,migration and fractionation of REE and its eco-logically environmental effects.In order to explore the REE biogeochemistry of soil-vegetation system in mining affected region,Dabaoshan mine,a typical polymetallic mine,was chosen as a study area.Soils and leaves of dominant Dicranopteris Pedata and Pinus massoniana,from and outside the mine,were collected.Then REE contents were measured by using the ICP-MS.REE distribution patterns,∑REE,δEu andδCe were analyzed.Results show that mining area,with the mean ∑REE 284.99 mg/kg,has significantly higher REE contents than outside areas.,In addition,REE contents in epipedon are much higher than those in subsoil due to the effects of mining activity.What's more,the fractional degree of HREE and LREE of both soil and plant is much weaker in mining area compared with that outside the mine.The soils and plants collected are all characterized by Eu deficiency and Ce enrichment.And the accumulator Dicranopteris Pedatahas lower REE enrichment coeffi-cient than Pinus massoniana by the presence of heavy metal.Therefore,the mining environment has negative effect on the nor-mal migration and fractionation of REE in soil-vegetation system and growth of plants.
Keywords：rare earth elementssoil-vegetation systemdistributionfractionationDabaoshangeochemistry
Publication Date：2014-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：8( 733-740 )