| DISTRIBUTION OF MERCURY IN TYPICAL WETLAND PLANTS IN THE SANJIANG PLAIN |
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| 作者姓名： | LIU Ru-hai WANG Qi-chao WANG Yan ZHANG Lei SHAO Zhi-guo |
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| 作者单位： | Northeast Institute of Geography and Agricultural Ecology，Chinese Academy of Sciences，Changchun 130012，P. R. China |
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| 基金项目： | SupportedbytheNationalNaturalScienceFoundationofChina(No.40071072)andtheImportantResearchFeildProjectofChineseAcademyofSciences(No.KZCX2-302) |
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| 摘 要： | 1INTRODUCTIONPlant canaccumulatemercuryfromair,soilandwa-ter.Theconcentrationofmercuryinplantisaffectedbythesource,form ofmercury andthephysiology ofplant.Theconcentrationsofinorganicmercuryandor-ganicmercuryinvariousplantsaredifferent,sotheenvironmentalexposureofmercuryandthebiotopeofplantscanbereflected bytheconcentrationofmer-curyinplants.Wetlandplaysanimportantroleinthetransportandcycleofmercury(DRISCOLLetal.,1994),andisanimportantsourceofmethylmercury ofsomelakesandrivers(STLOUI…
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| 关 键 词： | 沼泽地 三江平原 汞 种植 |
| 收稿时间： | 28 December 2002 |
Distribution of mercury in typical wetland plants in the Sanjiang plain |
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| LIU Ru-hai,WANG Qi-chao,WANG Yan,ZHANG Lei,SHAO Zhi-guo.DISTRIBUTION OF MERCURY IN TYPICAL WETLAND PLANTS IN THE SANJIANG PLAIN[J].Chinese Geographical Science,2003,13(3):242-246. |
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| Authors: | Liu Ru-hai Wang Qi-chao Wang Yan Zhang Lei Shao Zhi-guo |
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| Institution: | (1) Northeast Institute of Geography and Agricultural Ecology, Chinese Academy of Sciences, 130012 Changchun, P. R. China |
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| Abstract: | 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>segde>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 39.4μg/m2 above ground in Calamagrostis angustifolia wetland and 35.8μg/m2 and Carex lasiocarpa wetland.
Foundation item: Supported by the National Natural Science Foundation of China (No. 40071072) and the Important Research Feild
Project of Chinese Academy of Sciences (No. KZCX2-302)
Biography: LIU Ru-hai (1975–), male, a native of Tengzhou City of Shangdong Province, Ph. D., specialized in the pollutants’
behavior in environments and their control |
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| Keywords: | wetland plant mercury the Sanjiang Plain |
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