Multi-Trace Element and Rare Earth Element Composition of Coastal Casuarina Equisetifolia Ecosystem in Hainan Island,China

被引：1
作者：
刘强
毕华
黄澜
彭少麟
机构：
[1] Biology Department
[2] China
[3] Haikou 571158
[4] South China Institute of Botany
[5] Chinese Academy of Sciences
[6] Geology Department
[7] Chinese Academy of Sciences Guangzhou 510650
[8] Hainan Normal University
来源：
JournalofRareEarths | 2003年 / S1期
关键词：
trace elements; Casuarina equisetifolia; coastal ecosystem; rare earths;
D O I：
暂无
中图分类号：
X171 [生态系统与污染生态学];
学科分类号：
071012 ; 0713 ;
摘要：
46 trace elements including 14 rare earth elements (REEs) in coastal Casuarina equisetifolia plant-soil system from 9 sampling sites in Hainan Island were detected by using ICP-MS. The aim is to explore the biogeochemical characteristics of migration and translocation of trace elements in soil-plant system and their function on the changes of environmental geochemistry. The results indicate that multi-trace elements in coastal sandy soil in Hainan Island are at very low level. The multi-element patterns are quite similar among plant,sandy soil and upper continental crust (UCC),and the magnitudes of trace element concentrations among them are different in the general order of plant<soil<UCC. Sandy soil has trace element concentrations with 1～2 orders of magnitudes less than those of the average UCC,while plant has 1～3 orders of magnitudes less than UCC and 1～2 orders less than the soil. The total trace element contents are not significantly different between root and needle,but significantly different between branch and root and between branch and needle. Those of root or needle are about 2 times of those of branch. Ag,Cd,In,Sn and Tl are enriched in C. equisetifolia,especially Ag.
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页码：219 / 224
页数：6
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