DISTRIBUTION OF MERCURY IN TYPICAL WETLAND PLANTS IN THE SANJIANG PLAIN7

被引：1
|
作者：
LIU Ru-hai
机构：
来源：
Chinese Geographical Science | 2003年 / 03期
关键词：
wetland; plant; mercury; the Sanjiang Plain;
D O I：
暂无
中图分类号：
X173 [环境植物学];
学科分类号：
071012 ; 0713 ;
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 39.4 : m2 above ground in Calamagrostis angustifolia wetland and 35.8:蘥 /m2 in Carex lasiocarpa wetland.
引用
收藏
页码：51 / 55
页数：5
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