| 毛红椿光合速率及生理生态因子的日变化规律 |
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| 引用本文： | 吴际友,程瑞,王旭军,程勇,彭辉明,杨广文.毛红椿光合速率及生理生态因子的日变化规律[J].湖南林业科技,2011,38(2):5-8. |
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| 作者姓名： | 吴际友 程瑞 王旭军 程勇 彭辉明 杨广文 |
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| 作者单位： | 1. 湖南省林业科学院,湖南,长沙,410004
2. 岳阳市林业科学研究所,湖南,岳阳,414000 |
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| 摘 要： | 2010年8月利用Li-cor 6400便携式光合分析仪对2年生毛红椿幼树光合速率及生理生态因子进行测定,对其日变化规律进行了研究.研究结果表明:毛红椿光合速率日变化呈双峰曲线,呈现出光合"午休"现象;净光合速率最高峰出现在上午8:00,次高峰出现在中午13:00;相关分析和回归分析结果是,毛红椿光合速率的主要影响因子...
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| 关 键 词： | 毛红椿 光合速率 生理生态因子 日变化规律 |
Diurnal variation of photosynthetic rate and eco-physiological factors of Toona ciliata var.pubescens |
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| WU Jiyou,CHENG Rui,WANG Xujun,CHENG Yong,PENG Huiming,YANG Guangwen.Diurnal variation of photosynthetic rate and eco-physiological factors of Toona ciliata var.pubescens[J].Hunan Forestry Science & Technology,2011,38(2):5-8. |
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| Authors: | WU Jiyou CHENG Rui WANG Xujun CHENG Yong PENG Huiming YANG Guangwen |
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| Institution: | 1.Hunan Academy of Forestry,Changsha 410004,China;2.Forestry Institute of Yueyang City,Yueyang 414000,China) |
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| Abstract: | The diurnal variation of net photosynthetic rate（Pn） of two-year-old Toona ciliata var.pubescens and its eco-physiological factors were investigated by using Li-cor 6400 portable photosynthesis system on August 2010.The results showed that the diurnal variation of net photosynthetic rate of T.ciliata var.pubescens in sunny day varied with double peak curve.The peaks of Pn occurred at 8∶00 and 13∶00,respectively,showing obvious midday depression.The correlation analysis and regression analysis revealed that the dominantly influencing factors of Pn of T.ciliata var.pubescens were photosynthetically active radiation,stomatal conductance and atmospheric CO2 concentration. |
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| Keywords: | Toona ciliata var pubescens photosynthetic rate eco-physiological factors diurnal variation |
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