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| 南召宝天曼生境下山茱萸光合生理生态特性研究 | |
| 引用本文： | 王艳梅,杜宗现,刘震,李广涛,靳三恒,许天运,张富亮.南召宝天曼生境下山茱萸光合生理生态特性研究[J].经济林研究,2009,27(4):1-6. |
| 作者姓名： | 王艳梅 杜宗现 刘震 李广涛 靳三恒 许天运 张富亮 |
| 作者单位： | 1. 河南农业大学林学院,河南,郑州,450002 2. 交通部天津水运工程科学研究院,天津,300456 3. 河南省南召县林业局,河南,南召,474650 4. 河南省南召宝天曼自然保护区管理局,河南,南召,474650 |
| 基金项目： | 教育部留学回国人员科研启动基金，河南省杰出青年科学基金 |
| 摘 要： | 在完全自然生长不离体的情况下,利用Li-6400测定南召宝天曼生境下山茱萸7月份的光合生理生态指标.结果表明;山茱萸净光合速率日变化呈双峰曲线,具有光合"午休"现象且由非气孔限制因素所致;山茱萸净光合速率与叶片气孔导度、胞间C02浓度、气孔限制值呈线性相关,与光合有效辐射呈二次抛物线型相关,与其它生理生态因子之间没有直接的显著相关,但逐步回归多元统计分析显示利用叶片气孔导度和叶片温度二因子预测山茱萸净光合速率精度较高;在叶温28C和空气CO2浓度360μmol·tool-1条件下,山茱萸净光合速率随光合有效辐射的增强而提高,光补偿点和光饱和点分别为25 μmol·m-2·s-1、1000μmol·m-2·s1,在此条件下,净光合速率与蒸腾速率和叶片气孔导度没有显著的相关关系．但与胞间CO2浓度呈二次抛物线璎显著相关;在叶温28C和光合有效辐射900 μmol·m-2·s-1条件下,净光合速率随着CO2浓度的增加而提高,CO2补偿点和CO2饱和点分别为100μmol·mol-1、1400μmol·mol-1此条件下净光合速率与蒸腾速率和胞间CO2浓度均星对数曲线显著正相关. |
| 关 键 词： | 山茱萸 净光合速率 生理生态 |
Study on Photosynthetic and Eco-physiological Characteristics of Cornus officinalis in the Habitat of Baotianman in Nanzhao County |
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| WANG Yan-mei,DU Zong-xian,LIU zhen,LI Guang-tao,JIN San-heng,XU Tian-yun,ZHANG Fu-liang.Study on Photosynthetic and Eco-physiological Characteristics of Cornus officinalis in the Habitat of Baotianman in Nanzhao County[J].Economic Forest Researches,2009,27(4):1-6. | |
| Authors: | WANG Yan-mei DU Zong-xian LIU zhen LI Guang-tao JIN San-heng XU Tian-yun ZHANG Fu-liang |
| Institution: | WANG Yan-mei~1,DU Zong-xian~1,LIU zhen~1,LI Guang-tao~2,JIN San-heng~3,XU Tian-yun~4,ZHANG Fu-liang~4 (1.College of Forestry,Henan Agricultural University,Zhengzhou 450002,Henan,China,2.Tianjin Research Institute for Water Transport Engineering,M.O.C,Tianjin 300456,3.Forestry Bureau of Nanzhao County in Henan Province,Nanzhao 474650,4.Baotianman Nature Reserve Administration of Nanzhao County in Henan Province,China ) |
| Abstract: | In the case of natural growth and not separated from the body,photosynthetic and eco-physiological indexes of Cornus officinalis growing in the habitat of Baotianman located in Nanzhao county were measured using Li-6400.The results showed that diurnal variations of Pn presented a bimodal curve.The first and second peak appeared at 9:00 and 14:00 respectively. There was photosynthetic midday depression which was caused by non-stomata limitation.Pn of Cornus officinalis was linearly correlated with Gs,Ci,Ls,w... |
| Keywords: | Cornus officinalis net photosynthetic rate ecophysiology |
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