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《China Environmental Science》 2004-01
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Studies on the characteristics of heavy metal hyperaccumulation of weeds in farmland

WEI Shu-he1,2, ZHOU Qi-xing1,2, WANG Xin1, CAO Wei1 (1.Key Laboratory of Terrestrial Ecological Process, Shenyang Institue of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China;2.Graduate School of Chinese Academy of Sciences, Beijing 100039, China). China Environmental Science, 2004,24(1):105~109  
In view of that Cd-Pb-Cu-Zn combined pollution of hyperaccumulated plant in phytoremediation is short of research at present, block test was first adopted to study their accumulative characteristics in 22 weed species of 12 families in Shenyang district. The accumulation factor of Cd in the aboveground parts of 8 weeds such as Conyza Canadensis, Znula Britannica and so on was higher than 1, and the Cd content was higher than that in roots, thus possessing basic characteristics of heavy metal hyperaccumulator plant. The analysis of the correlation between heavy metal content and biomass of aboveground parts indicated that the heavy metal accumulation was not correlated with the biomass.
【Fund】: 国家杰出青年科学基金(20225722);; 中国科学院知识创新重要方向项目(KZCX2-SW-416)
【CateGory Index】: X53
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