海草光合作用研究进展

Review on Research of Seagrass Photosynthesis

关键词:  海草  光合作用  环境因子

Key words:  seagrass  photosynthesis  environmental factors

摘要:

生活在潮间带和潮下带海水中的单子叶植物海草,在生理生态方面对海洋沉水环境形成了一系列的适应,其光合作用受到光照、温度、无机碳和盐度等环境因子的影响,其中光照和无机碳常常成为限制因子。为了适应低无机碳的海洋环境,海草具有利用HCO₃^-能力,并在光合代谢上形成一定的适应性。全球气候变化与人类活动可以通过改变光照、温度等环境因子进而影响到海草床的演化。

Abstract:

Seagrass are endogen plants living in intertidal and subtidal zones develope a series of eco-physiological changes adaptive to submersed sea water environments.This paper reviewed seagrass photosynthesis that is impacted by factors such as light, temperature, inorganic carbon and salinity, of which light and inorganic carbon are the common restriction factors.Seagrass are capable of acquiring HCO₃^- as a source of inorganic carbon because of the shortage of inorganic carbon in the seawater. Less available light radiation also restricts the rate of their photosynthesis. Global climate change and human activities would influence the succession of the seagrass beds through variation of environmental elements such as temperature and light etc.