| 红榉光合生理特性日变化规律 |
| |
| 引用本文： | 王旭军,吴际友,唐水红,陈瑞,程勇,朱树长. 红榉光合生理特性日变化规律[J]. 湖南林业科技, 2012, 0(1): 10-13,37 |
| |
| 作者姓名： | 王旭军 吴际友 唐水红 陈瑞 程勇 朱树长 |
| |
| 作者单位： | 湖南省林业科学院,湖南长沙,410004 |
| |
| 基金项目： | 国家“十二五”科技支撑项目（2011BAD38803）,国家林业局948项目（2008-4-23）. |
| |
| 摘 要： | 在生长季节对红榉的光合等生理特性日动态变化进行了测定。结果表明,红榉的净光合速率(Pn)日变化呈双峰型,呈轻微的光合"午休"现象,其峰值分别出现在上午8:00和下午14:00。根据日变化参数Pn、胞间CO2摩尔分数(Ci)和气孔限制值(Ls)的变化方向,推断红榉的光合"午休"主要受非气孔因素限制。相关分析和多元逐步回归分析表明,影响红榉光合速率日变化的主要生理生态因子为Tr、Vpdl、Ca和Ci等。
|
| 关 键 词： | 红榉 日变化 光合作用 生理生态特征 |
Diurnal change of photosynthetic characteristics of Zelkova schneideriana. |
| |
| WANG Xujun,WU Jiyou,TANG Shuihong,CHEN Rui,CHENG Yong,ZHU Shuzhang. Diurnal change of photosynthetic characteristics of Zelkova schneideriana.[J]. Hunan Forestry Science & Technology, 2012, 0(1): 10-13,37 |
| |
| Authors: | WANG Xujun WU Jiyou TANG Shuihong CHEN Rui CHENG Yong ZHU Shuzhang |
| |
| Affiliation: | (Hunan Academy of Forestry, Changsha 410004, China) |
| |
| Abstract: | The diurnal change of photosynthesis and its affecting factors of Zelkova schneideriana Hand-Mazz was surveyed in the grow- ing season. The results demonstrated that the diurnal change of net photosynthetic rate （Pn） showed double-peak curve with a slightly midday depression, with maximum values occurred at about 8 ： 00 am and 14 ： 00 pm. And the midday depression of Z. schneideriana Hand-Mazz was mainly controlled by non-stomatal factors judging from the changing tendency of net photosynthetic rate, intercellular CO2 concentration （ Ci ） and stomatal limitation （ Ls ）. Correlation and regression analyses showed that Tr , Vpdl , Ca and Ci were impertant affecting factors on the photosynthesis of Z. schneideriana Hand-Maz.z. |
| |
| Keywords: | Zelkova schneideriana Hand-Mazz diurnal change photosynthesis eco-physiological characteristics |
| 本文献已被 CNKI 维普 等数据库收录！ |
|
