| 天津开发区毛泡桐叶片光合作用年变化动态研究 |
| |
| 引用本文： | 蒲光兰,袁大刚,刘世全,张金龙.天津开发区毛泡桐叶片光合作用年变化动态研究[J].内江师范学院学报,2009,24(4):56-59. |
| |
| 作者姓名： | 蒲光兰 袁大刚 刘世全 张金龙 |
| |
| 作者单位： | [1]四川农业大学,四川雅安625014 [2]天津泰达生态园林发展有限公司,天津300457 |
| |
| 摘 要： | 为了系统了解毛泡桐光合作用的动态变化规律，以开发区行道树毛泡桐作为研究对象，对该叶片光合作用年变化规律进行研究．结果表明：毛泡桐叶片净光合速率变化呈近“W”型，3个峰值分别出现在5，8，10月,叶表面温度呈现出先上升后下降的趋势，其峰值出现在8月；蒸腾速率和气孔导度均呈下降趋势；环境光合有效辐射呈波浪式下降，有2个峰，分别出现在6月和8月；水分利用效率在5～9月期间趋于稳定，10月其值急剧上升，出现一峰值．相关分析结果表明，气孔导度、蒸腾速率均与净光合速率显著相关，叶表面温度与水分利用率相关性极显著．
|
| 关 键 词： | 天津开发区 毛泡桐 光合作用 |
Dynamic Research of the Annual Photosynthesis Variation Regularity of Paulownia tomentosa Steud in Tianjin Development Zone |
| |
| PU Guang-lan,YUAN Da-gang,LIU Shi-quan,ZHANG Jin-long.Dynamic Research of the Annual Photosynthesis Variation Regularity of Paulownia tomentosa Steud in Tianjin Development Zone[J].Journal of Neijiang Teachers College,2009,24(4):56-59. |
| |
| Authors: | PU Guang-lan YUAN Da-gang LIU Shi-quan ZHANG Jin-long |
| |
| Institution: | 1.Sichuan Agricultural University;Ya'an 625014;China;2.Garden and Afforestation Corporation;TEDA;Tianjin 300457;China |
| |
| Abstract: | The research is carried out to gain a systematic knowledge about the dynamic photosynthesis variation regularity of Paulownia tomentosa Steud with its objects of study picked from the street trees-Paulowmia tomentosa Steud -of the development zone. The results turn out to be as follows： （1） The seasonal variation curve of photosynthesis on leaves takes the shape of ＂W＂, with the 3 peaks appearing respectivly in May, August and Oetober. The surface temperature on leaves takes an upward trend in the earlier period while a downward one in the later period with the temperature peak observed in August; （2） The values of transpiration rate and stomatal conductance take a downward trend; （3） Photosynthesis active radiation（PAR） takes a down trend, with 2 peaks observed in June and August respectively; （4）Water use efficiency remains stable from May to September, and then, goes up abruptly to a peak in October. The correlation analysis reveals a significant correlation not only between Gs and Pn, but also between Tr and Pn. ,and correlation between water use efficiency and Tsur also reaches a very significant level. |
| |
| Keywords: | Tianjin economic development area Paulownia tomentosa Steud photosynthesis |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
