矿区绿化树木对镉和锌的吸收与分布

应用生态学报

矿区绿化树木对镉和锌的吸收与分布

刘维涛^1,2;张银龙¹;陈喆敏¹;周启星^2,3;罗红艳¹

¹南京林业大学江苏省林业生态工程重点实验室，南京 210037；²中国科学院沈阳应用生态研究所陆地生态过程重点实验室，沈阳 110016；³南开大学环境科学与工程学院，天津 300071

收稿日期:2007-07-26 修回日期:1900-01-01 出版日期:2008-04-20 发布日期:2008-04-20

Cadmium and zinc absorption and distribution in various tree species in a mining area.

LIU Wei-tao^1,2;ZHANG Yin-long¹;CHEN Zhe-min¹;ZHOU Qi-xing^2,3; LUO Hong-yan¹

¹Key Laboratory of Forestry Ecological Engineering of Jiangsu Provinc
e, Nanjing Forestry University, Nanjing 210037, China; ²Key Laboratory of
Terrestrial Ecological Process, Institute of Applied Ecology, Chinese Academy of
Sciences, Shenyang 110016, China; ³College of Environmental Science and E
ngineering, Nankai University, Tianjin 300071, China

Received:2007-07-26 Revised:1900-01-01 Online:2008-04-20 Published:2008-04-20

摘要/Abstract

摘要： 研究了南京某矿区11种树木的重金属吸收和分布特征.结果表明：树木对重金属的吸收和富集因树木种类、部位及重金属种类的不同而异.法国冬青对Cd的含量、富集和转运系数均高于其它树种，可以植物萃取方式修复土壤污染.Cd主要积累在树木根部，树木不同器官对Cd积累能力的总趋势为根＞叶及枝＞树皮＞树干；而Zn更多地积累在树木地上部（叶和枝）而非根部.11种树木对Cd和Zn的富集系数均<0.2.树木对Cd和Zn的转运系数差异显著，总体上是Zn>Cd.

关键词: 氧化亚氮, 反硝化菌, 微生物采油, 原油膨胀

Abstract: The study on the characteristics of cadmium (Cd) and zinc (Zn) absorption and distribution in 11 tree species in a mining area of Nanjing showed that the absorption and accumulation of test heavy metals differed with tree species, their organs, and heavy metals themselves. Among the test tree species, Viburnum awabuki had the highest Cd absorption, accumulation, and translocation rates, which could be used for the remediation of polluted soils via phytoextraction. Cd was mainly accumulated in tree roots, and its accumulation in tree organs was generally in the order of root＞leaf and shoot＞bark＞stem. Zn was generally accumulated in above-ground part, such as in leaf and shoot, but not in root. For the test 11 tree species, the accumulation coefficients of Cd and Zn were all less than 0.2, while the translocation coefficients differed markedly, with that of Zn being higher than that of Cd in general.

Key words: microbial enhanced oil recovery, denitrifying bacteria, oil swelling, nitrous oxide

刘维涛^1,2;张银龙¹;陈喆敏¹;周启星^2,3;罗红艳¹. 矿区绿化树木对镉和锌的吸收与分布[J]. 应用生态学报.

LIU Wei-tao^1,2;ZHANG Yin-long¹;CHEN Zhe-min¹;ZHOU Qi-xing^2,3; LUO Hong-yan¹ . Cadmium and zinc absorption and distribution in various tree species in a mining area. [J]. Chinese Journal of Applied Ecology.

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