›› 2012, Vol. 24 ›› Issue (3): 0-429.

• 论文 •    

汕头南澳岛沿岸浮游植物对阳光紫外辐射响应的研究

翁卫立,关万春*   

  1. 温州医学院 生命科学学院 海洋科学系,浙江 温州 325035
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2012-05-24 发布日期:2012-05-24

Response of phytoplankton to solar UVR in Nanao Island, Shantou

WEN Wei-li;GUAN Wan-chun*   

  1. Department of Marine Science, School of Life Sciences, Wenzhou Medical College, Wenzhou 325035, China
  • Received:1900-01-01 Revised:1900-01-01 Online:2012-05-24 Published:2012-05-24

摘要: 为了阐明汕头南澳岛沿岸表层水体浮游植物群落对阳光紫外辐射(UVR, 280~400 nm)变化的响应,试验检测了浮游植物在全波段阳光和滤除UVR或UV-B条件下的光合固碳随光强的变化关系,同时还检测了浮游植物群落的紫外辐射作用光谱(BWF)。结果表明,阳光UVR可以明显的抑制浮游植物的光合固碳,当滤除UVR后,光合固碳受到的抑制程度下降。在100%阳光辐射条件下,光合固碳受到的抑制程度最大。紫外辐射作用光谱显示,浮游植物对UV-B最敏感,其抑制程度显著大于UV-A波段。

关键词: BWF, 浮游植物, 光合作用, UVR

Abstract: In order to know the effects of solar UV radiation (280-400 nm) on coastal phytoplankton in Nanao, Shantou, the relationship between photosynthetic carbon fixation and solar radiation were examined under full spectrum solar radiation or filtering out UVR or UV-B. The biological weighting function (BWF) was checked. It was found that solar UVR suppressed the photosynthetic carbon fixation. However, the less inhibition was detected when solar UVR or UV-B were cutoff. The most serious inhibition was observed under the 100% whole solar radiation. The BWF showed that phytoplankton was more sensitive to UV-B than UV-A.

Key words: BWF, phytoplankton, photosynthesis, UVR