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蚕豆叶片SOD活性监测大气SO2污染的可行性研究
引用本文:陈小勇,宋永昌.蚕豆叶片SOD活性监测大气SO2污染的可行性研究[J].植物生态学报,1995,19(1):23-28.
作者姓名:陈小勇  宋永昌
作者单位:华东师范大学环境科学系
摘    要: 本文从实验室熏气和野外大气暴露两方面对利用蚕豆叶片SOD活性评价和监测大气SO2污染的可行性进行了研究。低浓度SO2(0.1312、0.2601mg·m-3)处理,引起叶片SOD活性升高,一定时间后,SOD活性趋于稳定,且0.2601mg·m-3SO2处理时,SOD活性较高,表现出SOD活性增量与SO2浓度相关,为利用SOD活性监测和评价SO2污染提供了可能性。大气暴露试验结果表明SOD活性与大气硫酸盐化速率存在极显著的相关性。利用SOD活性和大气硫酸盐化速率分别对大气SO2污染程度进行了评价,结果基本一致,并根据SOD活性估测了大气硫酸盐化速率,符合程度较高,置信分析表明估测结果可信。以上结果表明,利用蚕豆叶片SOD活性监测和评价大气SO2污染是可行的。

关 键 词:SO2  SOD  生物监测  蚕豆

STUDIES ON THE FEASIBILTY OF SOD ACTIVITY AS BIOINDICATORS OF SO_2 POLLUTION
Chen Xiao-yong,Song Yong-chahg.STUDIES ON THE FEASIBILTY OF SOD ACTIVITY AS BIOINDICATORS OF SO_2 POLLUTION[J].Acta Phytoecologica Sinica,1995,19(1):23-28.
Authors:Chen Xiao-yong  Song Yong-chahg
Abstract:Fumigation and ambient exposing experiments were conducted to evaluate the feasibility of using SOD activity in the leaves of broadbean (Vicia faba) as bioindicators of SO2 pollution. Fumigation experiments were conducted in dynamic fumigation systems with SO2 concentrations of 0.1312 and 0.2601mg·m-3, respectively. The SO2 fumigated leaves had higher SOD activities than the control, and higher concentration (0.2601 mg·m-3) of SO2 caused greater increase in SOD activity than lower concentration (0.1312mg· m-3). The SOD activity in SO2 fumigated leaves increased gradually at the beginning and reached a relatively stable stage after several days of treatment. Ambient exposing experiments were conducted with the form of plant- meter in 8 sites for 21 days. The SOD activity correlated significantly with the rate of sulfatization (RS) in the air at the level of p<0.01. The degrees of SO2 pollution at sample sites were evaluated with SOD activity and RS respectively. RSs were also estimated by SOD activity, and then compared with the actually detected values. The 95% confidence interval was also made. All of our results suggest that it is feasible to use SOD activity in the broadbean leaves as bioindicators for SO2 pollution.
Keywords:Sulfur dioxide  Superoxide dismutase  bioindicators  Viciafaba  
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