植物学报 ›› 2001, Vol. 18 ›› Issue (05): 577-586.

• 综述与专论 • 上一篇    下一篇

植物对大气污染的反应与城市绿化

刘艳菊 丁辉   

  1. (北京市理化分析测试中心 北京 100089)
  • 收稿日期:2000-11-09 修回日期:2001-02-07 出版日期:2001-09-20 发布日期:2001-09-20
  • 通讯作者: 刘艳菊

Responses of Plants to Air Pollution and Their Significance in Urban Greening

LIU Yan-Ju DING Hui   

  1. (Beijing Centre for Physical & Chemical Analysis, Beijing 100089)
  • Received:2000-11-09 Revised:2001-02-07 Online:2001-09-20 Published:2001-09-20
  • Contact: LIU Yan-Ju

摘要: 大气污染是人类面临的最严峻问题之一,根据植物对大气污染的反应方式来选择城市绿化树种是减轻排放后大气污染物的一种重要补充工具。过去我国在植物对不同大气污染物反应特性方面的研究主要局限于:根据不同浓度的大气污染物对植物进行的熏气试验和现场观察植物叶片的宏观受害症状来粗略判断植物对不同污染物的抗性等级。因无统一的指标评价植物抗性能力,不同的方法得出同一植物对同种污染物抗性等级不同的矛盾结论。本文全面分析了近期国内外有关植物对大气污染物抗性特征方面的最新研究进展,建议利用植物在混合大气污染物作用下的宏观和微观、形态和解剖、生态和生理等方面的综合反应特性,科学地划分植物对大气污染物的抗性等级,结合植物的吸污能力,提出筛选绿化植物的合理化建议。

Abstract: Air pollution is one of the most important environmental problems. Planting trees with strong pollutant_absorption and pollutant_resistant ability in the city is an effectively supplementary way to alleviate the pollution. Studies on the po llutant_resistant ability of trees were limited to some simple ways as follows: observing leaf damage symptoms with eyes or doing fumigation experiment on plants with different densities of air pollutants. Due to the lack of standard methods to judge pollution_resistant ability of plants, wrong conclusion could be dr awn that the same plant species has different degrees of pollution_resistant abilities based on varied methods. In this paper, the Air Pollution Tolerance Index method is recommended for judging the pollutant_resistant ability of plants, with the morphological, anatomical, ecological and physiological features of plant species, all taken into account. Pollutant absorption ability of plants will be ascertained according to the original method of comparing plants, pollutant content in the air pollution region with those in the control one. Those trees with both strong pollutant absorption ability and pollutant_resistant ability should be chosen for urban greening.