不同杨树品种光合生理生态特性的研究  

Ecophysiological Characteristis of Photosynthesis in Different Poular Trees

作　　者：苏东凯[1] 周永斌[1] 唐庆华 曹立科 周大鹏 张洪伟 金福宇 

机构地区：[1]沈阳农业大学林学院,辽宁沈阳110161 [2]辽宁省高速公路管理局阜新管理处,辽宁阜新123000

出　　处：《西北林学院学报》2006年第2期39-41,共3页Journal of Northwest Forestry University

基　　金：辽宁省博士启动项目(2001102058)

摘　　要：采用L i-6400便携式光合分析仪测定了3个杨树品种(小青杨、107、W 13)的光合生理生态特征和光合日进程。结果表明,在不同时间,3种杨树品种的净光合速率、蒸腾速率各异;净光合速率、蒸腾速率与环境因子及内部因子之间有密切关系,其中光合有效辐射是影响净光合速率、蒸腾速率的主导因子,而胞间CO2浓度和气孔导度起到了重要的调节作用;3种杨树的水分利用率表明,小青杨比107、W 13高。Ecophysiological characteristics and diurnal photosynthetic courses of 3 kinds of polar tree species （Populus pseudo-sirnonii, Populus × euranericana cL. , W13） were measured by Li- 6400 The results showed the net photosynthetic rate and transpiration rate for different species were different at different time and closely related to environmental conditions and plant internal factors. Photosynthesis active radiation was the dominant factor, and stomatal conductance, intercellular CO2 concentration also played important roles in plant photosynthesis and transpiration. Water use efficiency of P. tseudo-simonii was also higher compared with the other two species.

关 键 词：杨树 光合作用 生理生态 

分 类 号：S718.43[农业科学—林学]