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林泽湿地抗SO2木本植物的初步研究
引用本文:沙晨燕,王天慧,陆健健.林泽湿地抗SO2木本植物的初步研究[J].环境科学研究,2009,22(2):181-186.
作者姓名:沙晨燕  王天慧  陆健健
作者单位:1.华东师范大学 河口海岸国家重点实验室,上海 200062
基金项目:国家重点基础研究发展规划(973计划),上海市科学技术委员会资助项目 
摘    要:通过对长江口崇西湿地研究基地中12种木本植物叶片进行不同浓度NaHSO3溶液〔c(NaHSO3)分别为0,10,20,30,40,50和100 mmol/L〕浸泡处理,研究大气SO2浓度变化对植物叶绿素荧光参数和快速光响应曲线的影响. 结果显示,12种湿地木本植物叶片的光系统Ⅱ最大光量子产量(Fv/Fm)和最大光电子传递速率(ETRmax)都随SO2浓度的增高而下降,并且不同物种的下降程度各异,说明SO2胁迫使植物光合作用反应中心光系统Ⅱ受到伤害,光电子传递速率受到抑制,光合作用效率降低. 通过对12种木本植物响应不同SO2浓度的光合生理特性变化的相似性进行聚类分析表明,沼生栎(Quercus palustris)、乌桕(Sapium sebiferum)和白蜡(Fraxinus griffithii)为抗污能力较强的树种,落羽杉(Taxodiumdistichum)为敏感物种. 

关 键 词:SO2    叶绿素荧光参数    快速光响应曲线    聚类分析
收稿时间:2008/5/15 0:00:00
修稿时间:2008/7/28 0:00:00

Preliminary Study of Wetland Woody Plants with High Resistance to SO2
SHA Chen-yan,WANG Tian-hui and LU Jian-jian.Preliminary Study of Wetland Woody Plants with High Resistance to SO2[J].Research of Environmental Sciences,2009,22(2):181-186.
Authors:SHA Chen-yan  WANG Tian-hui and LU Jian-jian
Institution:1.State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200062, China2.Department of Life Science, Shanghai University, Shanghai 200444, China
Abstract:The effects of simulated SO2 treatment on the photosynthetic apparatuswere investigated in twelve wetland woody plants. After leaf sections were immersed in 0, 10, 20, 30, 40, 50, and 100 mmol/L NaHSO3 for 20 hours, maximumquantum yield and maximum electron transport rate of all twelve woody plants reduced to different degrees with increasing SO2 concentration. Such a finding suggestedthat photosystem Ⅱ reaction centers were damaged by SO2 stress, electron transport was prohibited and photosynthetic efficiency decreased. Dendrograms indicated that the resistant species were Quercus palustris, Sapium sebiferum, andFraxinus griffithii. The sensitive species was Taxodium distichum. 
Keywords:SO2
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