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

Abstract

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

CLC Number:

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.

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