摘要
通过对榉树在昆钢污染区和相对无污染区生长的叶片中多种元素含量进行测定,分析了榉树对大气污染物的净化能力。研究结果表明,榉树在重度污染情况下能存活并能继续生长,但生长受到抑制,与对照点相比,平均地径生长量下降了117.56%,高生长量下降了66.31%,冠幅生长量下降了214.43%。对含氯元素和氟元素的有害气体具有极强的抗性和净化能力,对Cl和F的吸收分别比对照高出255.56%和2 500.00%;对As、Hg、Pb、Cd和Cr等重金属具有较佳的吸收能力,分别比对照高出106.04%、1 623.40%、804.97%、1 221.84%、191.92%。
Based on the measurements of element contents in leaves of Zelkova schneideriana grown in Kunming Iron and Steel Company polluted area and non-polluted area, the purification ability of Zelkova schneideriana to air pollution was studied. The results showed that Zelkova schneideriana could survive in heavy polluted area, however the growth was inhibited, the growth of basal diameter, height and crown decreased by 117. 56 %, 66. 31% and 214. 43 % respectively compared with the trees grown in non-polluted environment. Zelkova schneideriana showed promising absorbing ability to C1 and F, with the absorption amount to these two elements 255.56 % and 2 500. 00 % respectively higher than the control, and the absorption amount to As, Hg, Pb, Cd and Cr were 106.04 % , 1623.40 %, 804. 97 %, 1221.84 % and 191.92 % higher than the control.
出处
《西部林业科学》
CAS
2011年第4期77-79,共3页
Journal of West China Forestry Science
基金
云南省科技创新强省计划项目(2007AB006)子专题"云南特色木本花卉新特优树种选择
繁育及栽培技术研究"内容之一
关键词
榉树
大气
有害气体
重金属元素
净化能力
Zelkova schneideriana
air pollution
harmful gas
heavy metal element
purification ability
