植物叶绿素含量与大气中SO2浓度相关性研究

本文对厦门市5个样点、6种常见绿化树种及盆栽植物蕹菜的叶绿素含量、叶片含硫量及大气中SO_2浓度分析测定,得出了6种植物叶绿素a、b变化趋势是:鼓浪屿、厦门大学>火车站、后江埭>电化厂;叶片含硫量的变化趋势与叶绿素a、b含量变化相反。表明植物叶片叶绿素含量与大气中SO_2浓度和叶片含硫量呈负相关,并计算蕹菜叶绿素含量与大气SO_2浓度相关模式(y=-0.0138x 0.1958),为大气环境评价提供生物学依据。

Correlation of chlorophyll in leaves and SO_2 in air.

Contents of chlotophyil and S in leaves of six afforested trees and sand culture plant (Ipomoea aquatica) and concentration of SO_2 in air were determined at five sites of Xiamen City. Chlorophyll a and b showed a decrease in the order of Gulangyu, Xiamen University>Train Station>Houjiandi Industry District>Electrical Chemical Factory, but Chl. a/b and S content in leaves showed a reversed tendency. These indicated that content of chlorophyll in leaves was negatively correlated with eoneentraion of SO_2 in air and S in leaves. The correlation equation was calculated(Y=-0.0138x 0.1958)to monitor concentration of SO_2 in air by content of chlorophyll in plant leaves, which shows a biological evidence in evaluating air quality.