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松栎混交林中马尾松与白栎光合作用的日变化
引用本文:李志辉,卢兆银,杨艳,张斌,杨模华.松栎混交林中马尾松与白栎光合作用的日变化[J].中南林业科技大学学报,2007,27(1):76-80.
作者姓名:李志辉  卢兆银  杨艳  张斌  杨模华
作者单位:中南林业科技大学资源与环境学院,湖南长沙410004
基金项目:湖南省教育厅科研项目;中南林业科技大学校科研和教改项目
摘    要:自然条件下使用开放式气体交换LI-6400便携式光合测定系统对松栎混交林中的马尾松和白栎的光合速率、蒸腾速率、气孔导度等光合特性进行了测定.结果表明:马尾松与白栎之间的光合速率日变化有明显差异,马尾松呈双峰型,白栎呈单峰型;白栎光合特性对大气CO2浓度增加和温度升高等生态因子变化的响应比马尾松敏感,它的气孔导度与蒸腾速率的变化直接影响本身光合速率的变化.

关 键 词:植物生理  混交林  马尾松  白栎  光合作用  日变化
文章编号:1000-2502(2007)01-0076-05
收稿时间:2006-09-30
修稿时间:2006-09-30

Studies of the Diurnal Variations of Photosynthesis in the Mixed Forest of Pinus massonian and Quercus fabric
LI Zhi-hui,LU Zhao-yin,YANG Yan,ZHANG Bin,YANG Mo-hua.Studies of the Diurnal Variations of Photosynthesis in the Mixed Forest of Pinus massonian and Quercus fabric[J].Journal of Central South Forestry University,2007,27(1):76-80.
Authors:LI Zhi-hui  LU Zhao-yin  YANG Yan  ZHANG Bin  YANG Mo-hua
Institution:School of Resources and Environment, Central South University of Forestry and Technology, Changsha 410004, Hunan, China
Abstract:The diurnal variations of photosynthesis rate(Pn), transpiration rate(Tr) and stomatal conductance(Cond) of the mixed forest of Pinus massonian and Quercus fabric were determined by using Li-6400 portable photosynthesis system under natural conditions.The results show that the diurnal variations of photosynthesis rate of the two plants were obviously different in that Pinus massonian took on a double peak curve while Quercus fabric took on a single peak one;that the response of photosynthesis for Quercus fabri to the rise of CO_2 in the atmosphere and temperature was more sensitive than that for Pinus massoni;and that its diurnal changes of photosynthesis rate were immediately affected by its stomatal conductance and transpiration rate.
Keywords:plant physiology  mixed forest  Pinus massonian  Quercus fabric  photosynthesis  diurnal variation
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