米草光合作用速率季节变化及其对初级生产的影响

Abstract

Abstract: Some eco-physiological parameters for Sparti-na alterniflora and S. anglica in salt-marsh ecosystem in Bin-hai County of Jiangsu Province were observed and measured for a year. Rexults showed: maxium aboveground biomass was found in September,with 1714g (dry wt ) /m² and 419g (DW)/m² for S. alterniflora and S .anglica respectively Seasonal pat -terns of chlorophyll exhibited slope"Z" and flat "W" for S .al-terniflora and S .anglica respectively .The assimilation rates of photosynthesis for both species were higher in June than in september .Energy contents of plant material for two Spartina species varied from 12.56kJ/g to 20. 10kJ/g.

Key words: Spartina aboveground biomass, chlorophyll, assimilation rate of photosynthesis, energy content

CLC Number:

S917.3

WANG Chang-Yong, ZHONG Chong-Xin, QIN Pei. Seasonal changes of photosynthesis rates and its effects on pri-mary production for Spartina [J]. Journal of Ecology and Rural Environment, 1994, 10(3): 14-17.

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Seasonal changes of photosynthesis rates and its effects on pri-mary production for Spartina

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