黄栌和小叶白蜡的光合特征研究  

Photosynthetic Characteristics of Cotinus coggygria Scop. and Fraxinus bungeana DC.

作　　者：谭向峰[1] 郭霄[1] 杜宁[1] 王仁卿[1] 郭卫华[1] 

机构地区：[1]山东大学生命科学学院,山东济南250100

出　　处：《山东林业科技》2010年第6期1-4,14,共5页Journal of Shandong Forestry Science and Technology

基　　金：国家自然科学基金(No.30970166/C020101);教育部2007年度新世纪优秀人才支持计划(No.NCET-07-0511);国家科技支撑计划(No.2006BAC01A13);山东省自主创新重大项目(No.2008GG3NS07005)

摘　　要：黄栌(Cotinus coggygria Scop.)和小叶白蜡(Fraxinus bungeana DC.)是两种常见的园林树种,本文以黄栌和小叶白蜡为研究对象,研究了2树种的光合特性。结果表明:有光合"午休"现象净光合速率日变化曲线均呈现双峰型,有光合"午休"现象;在强光条件下,黄栌的净光合速率(Pn)、瞬时水分利用效率(WUE)、表观光能利用效率(LUE)和表观CO2利用效率(CUE)均高于小叶白蜡,证明黄栌对强光的适应性要高于小叶白蜡。Cotinus coggygria Scop.and Fraxinus bungeana DC.are two common greening tree species.The Photosynthetic Characteristics of C.coggygria and F.bungeana were studied in field condition.The results showed that the photosynthetic rates of two species experienced significant depression at midday,and the diurnal photosynthetic rate of them all appeared a two-peak pattern.In high irradiance,the photosynthetic rate,water use efficiency,light use efficiency and CO2 use efficiency are high than F.bungeana,which show that the adaptation of C.coggygria to high energy is higher than F.bungeana.

关 键 词：光合特征 日变化 光合午休 光抑制 

分 类 号：S718.43[农业科学—林学]