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浙江天台山七子花群落主要植物种类的光合特性
引用本文:金则新,柯世省.浙江天台山七子花群落主要植物种类的光合特性[J].生态学报,2002,22(10):1645-1652.
作者姓名:金则新  柯世省
作者单位:台州师范专科学校,浙江临海,317000
基金项目:浙江省自然科学基金资助项目 ( 3992 0 3),浙江省教育厅科研计划资助项目 ( 1 9990 36 7)
摘    要:对分布在浙江天台山的七子花群落主要植物种类的光合生理生态特性进行了研究。结果表明:夏季,位于群落冠层上层、林窗、林缘的七子花及主要伴生植物叶片的光合日进程均呈“双峰“曲线,有明显的光合“午休“现象。而位于冠层中、下层以及林下的七子花、草本植物,其光合日进程曲线平缓。从冠层上层到下层,七子花叶片的日均净光合速率(Pn)呈下降趋势。林窗、林缘的七子花小树叶片日均Pn比林下大,冠层上层的七子花中树叶片与林窗、林缘的小树叶片日均Pn差异不显著。七子花在不同生境中与伴生植物相比,日均Pn较低,光合能力较弱。同一植株七子花冠层上层叶片叶绿素含量最低,下层次之,中层最高。阴生草本植物在弱光下仍有很高的叶绿素含量。植物叶片的光合能力大小与叶绿素含量高低不呈正相关。相对常绿树种而言,七子花光补偿点较高、光饱和点较低,对光适应的生态幅度较窄。

关 键 词:浙江天台山  七子花群落  植物种类  光合特性
文章编号:1000-0933(2002)10-1645-08
收稿时间:4/2/2001 12:00:00 AM
修稿时间:2002/1/20 0:00:00

The Photosynthetic Characteristics of the Main Species of the Heptacodium miconioides Community in Tiantai Mountain of Zhejiang Province, China
JIN Zexin and KE Shisheng.The Photosynthetic Characteristics of the Main Species of the Heptacodium miconioides Community in Tiantai Mountain of Zhejiang Province, China[J].Acta Ecologica Sinica,2002,22(10):1645-1652.
Authors:JIN Zexin and KE Shisheng
Affiliation:Taizhou Teachers College; Linhai; Zhejiang; China
Abstract:In the last tenday period of July 2001, by using the Leaf Chamber Analyzer (type LCA-4) manufactured by ADC Bioscientific Ltd. in England, we studied the photosynthetic characteristics of the main accompanying species of Heptacodium miconioides community in Tiantai Mountain in Zhejiang Province. Their chlorophyll content, light compensation points (LCP) and light saturation points (LSP) were also ascertained by measuring. The results are as follows: In summer, the curves of the diurnal photosynthetic varia...
Keywords:Heptacodium miconioides community  main species  photosynthetic characteristics  tiantai mountain
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