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南方主要绿化树种对重金属的积累特性(PDF)

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
2007年05期
Page:
125-128
Column:
研究简报
publishdate:
2007-05-20

Article Info:/Info

Title:
Trees’ Phytoextraction of Heavy Metals in the Soil of South China
Article ID:
1000-2006(2007)05-0125-04
Author(s):
ZHANG Wei-peng1 CHEN Jin-lin2* HUANG Quan-neng1 WANG Qing-yun2 ZHAO Hao2 XUE Dan2
1. Xiamen Zhonglun Park, Xiamen 361009, China; 2. College of Forest Resources and Environment Nanjing Forestry University, Nanjing 210037, China
Keywords:
Heavy metals Pollution Planting trees Phytoextraction Phytoremediation
Classification number :
S718
DOI:
10.3969/j.jssn.1000-2006.2007.05.029
Document Code:
A
Abstract:
Through the research on the trees’ phytoextraction of heavy metals in the soil of South China, the results were as follows: the content of different heavy metals such as Pb, Cd, Hg, As differed widely in same tree’s leaves, and that of the same element also differed in different trees. The content of heavy metals in the leaves usually went up as environmental pollution increased, so the heavy metals’ content of the trees in downtown area was more than that in suburb areas. The mean contents of Pb, Cd, Hg, As in downtown area were increased by 62%, 103%, 187%, 104% respectively than those in suburb areas. It also showed that Ficus beniamina ’Exotica’, F. religiosa, Delonix regia, Araucaria cunninghamii had the phytoextraction of Pb, Cd, Hg, As respectively, thus planting these trees could be a good way to remedy the heavy metal pollution. Bauhinia variegata, Araucaria cunninghamii, F. altissima, F. microcarpa could be used to monitor the pollution of heavy metal as a result of their sensitivity to Pb, Cd, Hg, As respectively. Thus it is significant for rational planting sensitive trees and hyperaccumulating trees in urban afforestation and other ecological construction, which can monitor and repair heavy metal pollution.

References

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Last Update: 2013-05-20