CO/pH对三种藻生长及光合作用的影响

被引：30

作者：

杨波 ^{[1
]}

储昭升 ^{[2
]}

金相灿 ^{[2
]}

阎峰 ^{[1
]}

曾清如 ^{[1
]}

机构：

[1] 湖南农业大学资源环境学院

[2] 中国环境科学研究院湖泊生态环境创新基地国家环境保护湖泊污染控制重点实验室

来源：

中国环境科学 | 2007年 / 01期

关键词：

pH值; 无机碳; 生长速率; 光合作用;

D O I：

暂无

中图分类号：

X173 [环境植物学];

学科分类号：

071012 ; 0713 ;

摘要：

研究了在不同pH值和不同溶解性无机碳(DIC)浓度下太湖中惠氏微囊藻、四尾栅藻和菱形藻的生长和光合作用特征.研究表明,CO2/pH对3种藻的影响明显不同.惠氏微囊藻生长的最适pH值为8.0～9.0,pH7.0～9.0时具有较高的光合作用速率;四尾栅藻在偏酸性和偏碱性环境水体中均能较好生长,在本实验的pH值范围内均具有较高的光合作用速率;四尾栅藻在偏酸性和偏碱性环境水体中均能较好生长,在本实验的pH值范围内都具有较高的光合作用速率;菱形藻生长的最适pH值为7.0左右,在此pH值下光合作用速率也最高.惠氏微囊藻的K0.5(DIC)略小于四尾栅藻和菱形藻,表明对外源无机碳的亲合力要略大于四尾栅藻和菱形藻;但当DIC浓度达到饱和时,惠氏微囊藻和四尾栅藻的最大光合作用速率要远大于菱形藻.

引用

页码：54 / 57

页数：4

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