6 种乔木和7 种灌木树种叶片对光强和CO<sub>2</sub>浓度的响应

康华靖; 应苗苗; 戎建涛; 郑嘉玲; 毛静媛; 徐婷婷

6 种乔木和7 种灌木树种叶片对光强和CO₂浓度的响应

Response of Some Tree and Shrub Speices Leaves on Light and CO₂

摘要

摘要: 2015 年7-8 月，对浙江省温州市绿化的6 种乔木树种和7 种灌木树种叶片对光强和CO2 浓度的响应差异进行监测和比较。结果表明，乔木树种中，樟（Cinnamomum camphora）的饱和光强最高，其次依次为桉（Eucalyptusrobusta）、雅榕（Ficus concinna var. concinna）、鹅掌楸（Liriodendron chinense）、白兰（Michelia alba）和木犀（Osmanthus fragrans）；光补偿点木犀最高，之后依次为桉、鹅掌楸、雅榕、樟和白兰；樟、雅榕和桉具有相对较高的最大羧化速率（P<0.05）和相对较低的饱和胞间₂浓度及胞间₂ 补偿点。灌木树种中，红花檵木（Loropetalum chinense var. rubrum）的饱和光强、最大光合速率、最大羧化速率和初始羧化效率均为最高（P<0.05）。建议在温州市城市绿化中可优先考虑樟、雅榕、桉及红花檵木。

Abstract: Determinations during July and August of 2015 and analysis were conducted on light and CO2 response of leaves of 6 tree and 7 shrubspecies as greening plant in Wenzhou city, Zhejiang province. Results showed that light saturation point (LSP) of arbor species was ordered byCinnamomum camphora, Eucalyptus robusta, Ficus concinna var. concinna, Liriodendron chinense, Michelia alba and Osmanthus fragrans, andlight compensation point ordered by O. fragrans, E. robusta, L. chinense, F. concinna var. concinna, C. camphora and M. alba. C. camphora, F.concinna var. concinna and E. robusta had relative higher the maximum carboxylation rate, but lower saturated intercellular ₂ concentration andcompensation point of intercellular ₂ concentration .Among tested shrub species, L. chinense var. rubrum had the highest LSP, the maximumphotosynthetic rate, the maximum carboxylation rate initial carboxylation efficiendy. Experiment resulted that C. camphora, F. concinna var.concinna, E. robusta and L. chinense var. rubrum were proposed to be planted in Wenzhou.

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6 种乔木和7 种灌木树种叶片对光强和CO2浓度的响应

Response of Some Tree and Shrub Speices Leaves on Light and CO2

6 种乔木和7 种灌木树种叶片对光强和CO₂浓度的响应

Response of Some Tree and Shrub Speices Leaves on Light and CO₂