| 蓝果树光合生理生态特性研究 |
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| 引用本文： | 马金娥,金则新,张文标,蔡晓华.蓝果树光合生理生态特性研究[J].浙江林业科技,2007,27(6):33-36. |
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| 作者姓名： | 马金娥 金则新 张文标 蔡晓华 |
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| 作者单位： | 1. 西南大学三峡库区生态环境教育部重点实验室,重庆,400715;台州学院生态研究所,浙江,临海,317000
2. 台州学院生态研究所,浙江,临海,317000 |
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| 摘 要： | 应用LCA-4型光合测定系统对蓝果树成熟叶片的光合生理、生态特征进行了研究,结果表明:蓝果树的光合速率日进程呈"双峰"曲线,峰值出现在8:00和14:00左右,有明显的光合"午休"现象;暗呼吸日进程变化为明显的"单峰"曲线,在10:00时达到最大值;胞间CO2浓度呈"W"形变化趋势,早晚高,中午有一回升;气孔阻力早上随光强增加,气孔张开,气孔阻力下降,中午的高光强、高温、低湿环境导致部分气孔关闭,气孔阻力增大,以后随着光强的降低,气孔阻力下降,到14:00降到最低,此后随光强降低气孔阻力又开始增大。应用逐步多元回归方法对光合速率(Pn)和光合有效辐射(PAR)、大气CO2浓度(Ca)、大气相对湿度(RH)、大气温度(Ta)、叶面温度(T1)作逐步多元回归,结果表明,影响蓝果树光合速率的主要环境因子是PAR、RH和Ca,蓝果树Pn与Ta呈极显著的相关性,与PAR和Ca具有显著相关。
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| 关 键 词： | 蓝果树 光合作用 环境因子 相关分析 |
| 文章编号： | 1001-3776（2007）06-0033-04 |
| 收稿时间： | 2007-08-10 |
| 修稿时间： | 2007-09-15 |
Study on the Diurnal Changes of Photosynthetic Rate of Nyssa sinensis and Environmental Factors |
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| MA Jia-e,JIN Ze-Xin,ZHANG Wen-Biao,Cai Xiao-hua.Study on the Diurnal Changes of Photosynthetic Rate of Nyssa sinensis and Environmental Factors[J].Journal of Zhejiang Forestry Science and Technology,2007,27(6):33-36. |
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| Authors: | MA Jia-e JIN Ze-Xin ZHANG Wen-Biao Cai Xiao-hua |
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| Abstract: | Determination was carried out on diurnal changes of photosynthesis of the leaves of Nyssa sinensis and environmental factors.The result indicated that the diurnal change of photosynthesis had "double peak" curve with remarkable "midday depression" due to non-stomatal limitation.The correlation analysis showed that the important influence factor of environment was photosynthetically active radiation(PAR),CO2 concentration and relative humidity.Not photosynthetic rate had significant with temperature,and close relation with PAR and Ca. |
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| Keywords: | Nyssa sinensis photosynthesis environmental factor correlation analysis |
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