| 木荷夏季气体交换、光能和水分利用效率的日变化 |
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| 引用本文： | 陈彤,柯世省,张阿英.木荷夏季气体交换、光能和水分利用效率的日变化[J].天津师范大学学报(自然科学版),2005,25(4):28-31. |
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| 作者姓名： | 陈彤 柯世省 张阿英 |
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| 作者单位： | 台州学院,生物系,浙江,临海,317000 |
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| 基金项目： | 浙江省自然科学基金资助项目(Y504256) |
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| 摘 要： | 木荷叶片净光合速率日进程曲线为“双峰”型，光合效率午间明显降低，主要由非气孔限制引起．蒸腾速率的日变化为“单峰型”，午间最高．光能利用效率和水分利用效率早晚较高，午间较低．利用多元逐步回归方法分别得到了净光合速率、蒸腾速率、气孔阻力、光能利用效率和水分利用效率与环境因子的最优方程．
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| 关 键 词： | 木荷 净光合速率 蒸腾速率 光能利用效率 水分利用效率 日变化 |
| 文章编号： | 1671-1114(2005)04-0028-04 |
| 修稿时间： | 2005年4月25日 |
Diurnal Variation of Gas Exchange, Solarenergy Use Efficiency and Water Use Efficiency of Schima superba Leaves in Summer |
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| CHEN Tong,KE Shi-sheng,ZHANG A-ying.Diurnal Variation of Gas Exchange, Solarenergy Use Efficiency and Water Use Efficiency of Schima superba Leaves in Summer[J].Journal of Tianjin Normal University(Natural Science Edition),2005,25(4):28-31. |
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| Authors: | CHEN Tong KE Shi-sheng ZHANG A-ying |
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| Abstract: | The diurnal variations of net photosynthetic rate(P_n),transpiration rate(T_r),stomatal resistance(r_s),solarenergy use efficiency(SUE) and water use efficiency(WUE) of Schima superba leaves under natural conditions had been studied.The results were as follows: in summer clear days,the curves of diurnal variations of P_n had two peaks,and P_n obviously declined at midday which was caused by non-stomatal limited elements.T_r had single peak which showed the maximum at noon.SUE and WUE were higher in the morning and evening,and were lower at noon.The most excellent equation of the diurnal variation of P_n,T_r,r_s,SUE and WUE were attained by the methods of stepwise multi-regression,respectively. |
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| Keywords: | Schima superba net photosynthetic rate transpiration rate solarenergy use efficiency water use efficiency diurnal variation |
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