脱水对浒苔光合作用的影响The Effects of Desiccation on Photosynthesis of Enteromorpha prolifera
邹定辉
摘要(Abstract)：
对汕头南澳岛潮间带海藻浒苔 (Enteromorpha prolifera)在低潮时干出状态下的光合作用进行了测定。结果表明 ,浒苔在干出状态下光合速率具有随脱水增加而下降的趋势 ,而呼吸速率在脱水过程中保持稳定。光合作用受目前大气 CO2 浓度水平 (36 0 μL·L-1)的限制 ,大气 CO2 浓度加倍使得浒苔暴露于空气过程中的光合作用增加 35%～ 52 % ,在严重脱水状态下 ,光合效率与羧化效率下降 ;而光补偿点、CO2 补偿点则增高。
关键词(KeyWords)： 浒苔;光合作用;干出;脱水;CO2;海藻
基金项目(Foundation): 国家自然科学基金资助项目 (编号 39830 0 6 0和 396 2 5 0 0 2 )
作者(Author): 邹定辉
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