DISTRIBUTION OF MERCURY IN TYPICAL WETLAND PLANTS IN THE SANJIANG PLAIN

被引：6
|
作者：
Liu Ru-hai [1 ]
Wang Qi-chao [1 ]
Wang Yan [1 ]
Zhang Lei [1 ]
Shao Zhi-guo [1 ]
机构：
[1] Chinese Acad Sci, NE Inst Geog & Agr Ecol, Changchun 130012, Peoples R China
来源：
CHINESE GEOGRAPHICAL SCIENCE | 2003年 / 13卷 / 03期
基金：
中国国家自然科学基金;
关键词：
wetland; plant; mercury; the Sanjiang Plain;
D O I：
10.1007/s11769-003-0024-5
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Total mercury concentration of typical wetland plants was analyzed in this paper. There were great differences of total mercury concentration among different plants: moss>hydrophyte>sedge>herbage>shrub. Total mercury concentrations show an increasing trend from vascular plants to bryophytes, and from dry to wet lands. The mercury concentration of wetland plants was higher than that of crops. The wetland soil was the source of mercury in the air close to the ground, so it affected the concentration of mercury in the plant. In different parts of a plant, mercury concentration was in the order of: dead stand>root>leaf>stem. Mercury concentration increased at the initial stage and decreased in the end of the growing season. According to the mercury content and biomass, mercury stock of plants was 39.41 mu g/m(2) above ground in Calamagrostis angustifolia wetland and 35.8 mu g/m(2) in Carex lasiocarpa wetland.
引用
收藏
页码：242 / 246
页数：5
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