摘要
大兴安岭北部的落叶松和白桦树对稀土元素Eu选择吸收性十分明显。Eu的生物吸收系数是其它稀土元素的20倍以上。落叶松和白桦树稀土元素均具有明显的铕正异常。落叶松和白桦树对二价金属元素Zn、Sr也具有强烈的摄取能力,而对一价和高价金属元素吸收能力较弱。土壤的稀土元素不是影响植物中稀土元素分布特征的重要因素。该区落叶松和白桦树稀土元素分布特征与水土壤植物系统的物理化学条件具有密切的关系。
The Larix gmelini and Betula platyphylla Suk. have selective absorption for Eu from Da Xing'an Ling Mountains. The absorption coefficient of Eu is 20 times higher than other rare earth elements. The Larix gmelini and Betula platyphylla. have great Eu positive anomaly in this area and they also have stronger absorption ability for bivalent metals such as Zn or Sr than that for that of monovalent and high valence metals. The REE abundance of soil is not key control for the REE distribution of plant, and the later is closely related to physicochemical conditions of the water-soil-plant system.
出处
《吉林大学学报（地球科学版）》
EI
CAS
CSCD
北大核心
2004年第3期351-355,共5页
Journal of Jilin University：Earth Science Edition
基金
中国地质调查局地质大调查资助项目(20002010002106
200320120005)
关键词
稀土元素
落叶松
白桦
生物吸收
大兴安岭
REE
Larix gmelini
Betula platyphylla
biological absorption
Da Xing'an Ling Mountains
