Accumulation and Fractionation of Rare Earth Elements in a Soil-Wheat System
Accumulation and Fractionation of Rare Earth Elements in a Soil-Wheat System作者机构：Nanjing Institute of Geography ＆ Limnology Chinese Academy of Sciences Nanjing 210008 （China） Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences Beijing 100101 （ China） Department of Geography and Environmental Change Institute National University of Ireland Galway （Ireland） State Key Laboratory of Pollution Control and Resource Reuse School of the Environment Nanjing University Nanjing 210093 （China）
出 版 物：《Pedosphere》 (土壤圈（英文版）)
年 卷 期：2006年第16卷第1期
页 面：82-90页
核心收录：
学科分类：09[农学] 0903[农学-农业资源与环境] 0901[农学-作物学] 090301[农学-土壤学]
基 金：Project supported by the National Natural Science Foundation of China (Nos. 40232022 and 40571146)
主 题：accumulation fractionation rare earth elements wheat
摘 要：Time series bioaccumulation of rare earth elements （REEs） in field-grown wheat with and without a dressing of extraneous REE fertilizer at different growth stages and fractionation of REEs during their transport in a soil-wheat system were determined. Time-dependent accumulation of extraneous REEs was found in different parts of wheat. An upward transport of extraneous REEs from roots to shoots under a soil dressing and a downward transport from leaves to roots with a foliar dressing were also observed. Moreover, fractionation of REEs occurred in the soil-wheat system. Compared to the host soil a positive Eu anomaly in the stems and grains as well as heavy REE enrichment in the grains were found. The ability of the different wheat organs to fractionate Eu from the REE series was ranked in the order of sterns 〉 grains 〉 leaves 〉 roots.
维普期刊数据库
同方期刊数据库