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哈尔滨市4种阔叶树树干重金属含量动态变化及富集特征(PDF)

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

Issue:
2013年06期
Page:
64-68
Column:
研究论文
publishdate:
2013-11-27

Article Info:/Info

Title:
Dynamic variation and accumulation characteristics of heavy metals in four broadleaved tree rings in Harbin city
Article ID:
1000-2006(2013)06-0064-05
Author(s):
SUN Huizhen1GAO He1CAI Chunju2ZHU Ning1*
1.Ecological Research Center, Northeast Forestry University, Harbin 150040, China;
2.Key Laboratory of Science and Technology of Bamboo and Rattan, International Center for Bamboo and Rattan, State Forestry Administration, Beijing 100102, China
Keywords:
tree rings heavy metals accumulation ratio soil-tree system urban plantations
Classification number :
S718.4
DOI:
10.3969/j.issn.1000-2006.2013.06.013
Document Code:
A
Abstract:
In order to study the traits of the heavy metals enrichment in the Phellodendron amurense, Fraxinus mandshurica, Betula platyphylla, and Quercus mongolica. The dynamic concentrations and accumulation of Cu, Zn, Pb, Hg, As, and Cd in the stems were studied in Northeast Forestry University’s Urban Forestry Demonstration Research Base. The results showed that the concentrations of six heavy metals in the tree rings increased with tree age beside the Pb and As in B. platyphylla, Hg in P. amurense and F. mandshurica. Mean concentrations of Cu and Hg in P. amurense were 1.4-3.3 times than that in the other three trees, and the mean concentrations of Cd, Zn, Pb, and as in B. platyphylla were 1.3-2.4 times than that in other three trees except that As in Q. mongolica, which was equal with that in B. platyphylla. The accumulation ratio of Hg in trees was the highest, then that is Cd(except for in the F. mandshurica), and the accumulation ratio of Cu, Pb, and Zn varied with the tree species, but which of As was the lowest all the tress. Q. mongolica and P. amurense for Hg, Q. mongolica and B. platyphylla for Cd had the largest enrichment compared with the other tree species. Q.mongolica was the most appropriate species for soil phytoremediation contaminated by Hg and Cd.

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Last Update: 2013-11-30