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太湖春季和秋季浮游植物的光合作用活性

李大命 于 洋 张彤晴 唐晟凯 周 军 周 刚

李大命, 于 洋, 张彤晴, 唐晟凯, 周 军, 周 刚. 太湖春季和秋季浮游植物的光合作用活性[J]. 环境科学研究, 2014, 27(8): 848-856.
引用本文: 李大命, 于 洋, 张彤晴, 唐晟凯, 周 军, 周 刚. 太湖春季和秋季浮游植物的光合作用活性[J]. 环境科学研究, 2014, 27(8): 848-856.
LI Da-ming, YU Yang, ZHANG Tong-qing, TANG Sheng-kai, ZHOU Jun, ZHOU Gang. Photochemical Activity of Phytoplankton in Taihu Lake in Spring and Autumn[J]. Research of Environmental Sciences, 2014, 27(8): 848-856.
Citation: LI Da-ming, YU Yang, ZHANG Tong-qing, TANG Sheng-kai, ZHOU Jun, ZHOU Gang. Photochemical Activity of Phytoplankton in Taihu Lake in Spring and Autumn[J]. Research of Environmental Sciences, 2014, 27(8): 848-856.

太湖春季和秋季浮游植物的光合作用活性

基金项目: 江苏省青年科学基金项目(BK2012488); 江苏省内陆水体渔业资源和环境监测项目

Photochemical Activity of Phytoplankton in Taihu Lake in Spring and Autumn

  • 摘要: 应用Phyto-PAM浮游植物荧光仪对2012年太湖浮游植物群落光合作用活性的时空分布进行测定. 结果表明:春季蓝藻、绿藻和硅/甲藻的Fv/Fm(最大光量子产量)分别为0.35~0.49、0.34~0.68和0.09~0.56;秋季则分别为0.34~0.53、0.55~0.68和0.28~0.61. 春季蓝藻、绿藻和硅/甲藻的NPQ(非光化学淬灭)分别为0.012~0.165、0.085~0.201和0.104~0.281,秋季则分别为0.035~0.263、0.052~0.118和0.048~0.301. RLC(快速光响应曲线)的特征参数表明,太湖浮游植物群落光能利用效率和光合作用速率具有显著时空差异. 相关分析表明,绿藻和硅/甲藻的光合作用活性与环境因子没有显著相关性;而蓝藻的Fv/Fm与RLC的特征参数呈显著正相关,与ρ(Chla)呈显著正相关(P<0.05,R=0.49),与SD(透明度)呈极显著负相关(P<0.01,R=-0.56),说明太湖蓝藻的光合作用活性与富营养化水平具有一致性. 从空间分布来看,草型湖区蓝藻的光合作用活性和ρ(Chla)均显著低于藻型湖区,表明水草能抑制蓝藻的光合作用活性和生长,进而降低蓝藻水华强度.

     

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出版历程
  • 收稿日期:  2013-08-31
  • 修回日期:  2013-12-20
  • 刊出日期:  2014-08-25

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