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当前位置: 首页 > 文章 > 3种能源树种光合作用比较研究 江苏林业科技 2008,35 (4) 11-14+32
Position: Home > Articles > Comparative study on the photosynthesises of three bio-energy trees Journal of Jiangsu Forestry Science & Technology 2008,35 (4) 11-14+32

3种能源树种光合作用比较研究

作  者：
彭秀;刘春生;谭名照
单  位：
重庆市林业科学研究院三峡库区森林生态保护与恢复重点实验室
关键词：
能源树种;光合作用;比较研究
摘  要：
通过测定乌桕、黄连木、油桐的光合作用及其周围环境因子的日变化,分析、比较3种能源树种的光合作用日变化,以期为其栽培利用提供理论基础。结果表明:气温、光强均呈单峰型,空气相对湿度呈"U"型。净光合速率、蒸腾速率日变化3个能源树种均呈单峰型。净光合速率、蒸腾速率、水分利用效率日均值为油桐>乌桕>黄连木,并且油桐、乌桕净光合速率、水分利用效率日均值均与黄连木存在显著差异(P<0.05)。3种能源树种的气孔导度与其净光合速率均为显著正相关,油桐、乌桕胞间CO2浓度与净光合速率为极显著负相关。
译  名：
Comparative study on the photosynthesises of three bio-energy trees
作  者：
PENG Xiu,LIU Chun-sheng,TAN Ming-zhao(Chongqing Academy of Forestry,Chongqing Key Laboratory of The Three Gorges Storehouse District Forest Ecology Protects and Restores,Chongqing 400036,China)
关键词：
Bio-energy tree;Photosynthesis;Comparative study
摘  要：
Diurnal changes of the photosynthesises of Sapium sebiferum,Pistacia chinensis,Vernicia fordii and its environmental factors were compared to provide a theoretical basis for cultivation and utilization.The results we reported were as follows: temperature and light intensity presented as synchronous single-peak curves,while air relative humidity as "U" curve.Diurnal changes of net photosynthetic rate and transpiration rate of three bio-energy species were single-peak curves.Diurnal average of net photosynthetic rate,transpiration rate and water utilization efficiency ranked Vernicia fordii>Sapium sebiferum>Pistacia chinensis.The diurnal average of net photosynthetic rate and water use efficiency of Vernicia fordii and Sapium sebiferum achieved significant difference with those of Pistacia chinensis(P<0.05).Net photosynthetic rate of three bio-energy trees were significantly and positively related with their stomatal conductance while there were very distinctively negative relation between intercellular CO2 concentration and net photosynthetic rate of Vernicia fordii and Sapium sebiferum.

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