高CO2浓度对石莼光合作用及营养盐吸收的影响

被引:26
作者
邹定辉
高坤山
阮祚禧
机构
[1] 汕头大学科技中心海洋生物研究所
[2] 中国科学院水生生物研究所
关键词
石莼; 高CO2浓度; 光合作用; 营养盐吸收; 大型海藻;
D O I
暂无
中图分类号
Q945.11 [光合作用、碳素同化作用];
学科分类号
摘要
在室外自然条件下用高 CO2 浓度的空气 (5 0 0 0μL CO2 · L-1)通气培养石莼 (Ulvalactuca) 9~ 10 d,以探讨高 CO2 浓度对石莼生理特性的影响。结果表明 ,在高 CO2 浓度条件下 ,石莼的生长速率没有明显改变。而石莼的光合能力下降 ,光合参数如光合效率、羧化效率及光饱和点也都下降 ;但在高 CO2 浓度条件下 ,石莼培养液中营养盐浓度的下降速度增加 ,且 NO-3 浓度下降速度的相对促进量比 PO3 -4 浓度下降速度的相对促进量更大
引用
收藏
页码:877 / 882
页数:6
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