松嫩草地羊草叶片光合作用生理生态特征分析

应用生态学报 ›› 2001, Vol. ›› Issue (1): 75-79.

松嫩草地羊草叶片光合作用生理生态特征分析

王玉辉, 周广胜

中国科学院植物研究所植被数量生态学开放研究实验室, 北京100093

收稿日期:1999-05-27 修回日期:2000-06-02
通讯作者: 王玉辉,女,1972年生,博士,主要从事全球生态学,尤其是陆地生态系统对全球变化反应研究,已发表论文10篇.E-mail:wzhougs@public2.east.cn.net
基金资助:
国家重点基础研究专项经费资助项目(G1999043407);国家自然科学基金重点项目(39730110);重大项目(39393002);中国科学院重大资助项目(KZ9512B12108).

Analysis on ecophysiologlcal characteristics of leaf photosynthesis of Aneurolepidium chinense in Songnen grassland

WANG Yuhui, ZHOU Guangsheng

Laboratory of Quantitative Vegetation Ecology, Institute of Botany, Chinese Academy of Sciences, Beijing 100093

Received:1999-05-27 Revised:2000-06-02

摘要/Abstract

摘要： 对松嫩平原盐碱化草地羊草叶片的光合生理生态特征分析表明,晴朗天气条件下,羊草叶片净光合速率日变化呈双峰型,蒸腾速率属单峰型.叶片的净光合速率、蒸腾速率及气孔阻力在整个生长季受到多个环境因子的共同影响.不同时期起主导作用的环境因子有所差异,同一环境因子在不同时间对净光合速率、蒸腾速率及气孔阻力的影响程度不同.净光合有效辐射是对羊草光合作用影响最为强烈的环境因子,受环境因子控制最为显著的生理特征是羊草叶片的蒸腾速度.

关键词: 光合作用, 蒸腾作用, 气孔阻力, 环境因子, 相关关系

Abstract: A series of physiological characteristics of leaf photosynthesis, environmental factors are measured on Aneurolepidium chinense in Songnen salinized grassland during the growth season.The results showed that the daily change pattern of net photosynthetic rate (Pn) of Aneurolepidium chinense could be expressed as a two-humped curve, the daily change pattern of transpiration rate is one-humped curve.In addition,net photosynthetic rate(Pn),transpiration rate(E), stomatal resistance(Rs) are affected by various environmental factors.At different growth stage,the influence of environmental factor on them is different,and even the same environmental factor had an different effect on Pn, E, Rs. In the whole growth period,photosynthetic available radiation(PAR) was the most intensive effect on the photosynthesis of Aneurolepidium chinense. Among Pn,E, Rs,E was one of the most obvious ecophysiological factor affected by environmental factors.

Key words: Photosynthesis, Transpiration, Stomatal resistance, Environmental factors, Correlation

中图分类号:

王玉辉, 周广胜. 松嫩草地羊草叶片光合作用生理生态特征分析[J]. 应用生态学报, 2001, (1): 75-79.

WANG Yuhui, ZHOU Guangsheng . Analysis on ecophysiologlcal characteristics of leaf photosynthesis of Aneurolepidium chinense in Songnen grassland[J]. Chinese Journal of Applied Ecology, 2001, (1): 75-79.

参考文献

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