摘要
于2011年6月12日至28日采集黄海表层海水进行甲板培养实验,研究了不同营养盐添加条件下浮游植物生长释放二甲亚砜(DMSO)的动态变化规律。实验结果表明,不同浓度及不同氮、磷、硅比值的营养盐的加入,均会导致培养体系中叶绿素a(Chl-a)、溶解态和颗粒态DMSO(DMSOd和DMSOp)含量的增加。培养实验过程中,DMSOp的浓度变化趋势与Chl-a相一致,其中在氮/磷比值最高(32∶1)的培养体系内DMSOp浓度最大,而DMSOd的浓度变化有一定的波动。此外,N、P营养盐相对于Si对DMSO含量的影响更为显著,而微量营养元素Fe可能并不是影响黄海浮游植物生物量的1个重要因子。
The production of dimethylsulfoxide （DMSO） from marine phytoplankton was examined under different nutrient conditions by in-situ incubation experiments with surface waters of the Yellow Sea from June 12 to 28, 2011. The results indicated that additions of nutrients with different eoncentrations and ratios （nitrogen, phosphorus and silicon） led to the increase in the concentrations of chlorophyll a （Chl-a）, dissolved and particulate DMSO （DMSOd, DMSOp）. In the mesoeosm experiments, the concentrations of DMSOp varied following the levels of Chl-a, with the maximum DMSOp occurring in the highest ratio of nitrate to phosphate （32：1）, whereas no consistent change trend was observed between the DMSOd and Chl-a concentrations. In addition, the N and P nutrients exhibited signifieant influ- ences on DMSO production relative to Si nutrient, whereas Fe did not appear to be a main factor influ- encing phytoplankton biomass in the study area.
出处
《海洋湖沼通报》
CSCD
北大核心
2014年第4期104-111,共8页
Transactions of Oceanology and Limnology
基金
国家自然科学基金项目(41030858
41306069)
教育部博士点新教师基金项目(20110132120010)
教育部"长江学者"奖励计划
山东省"泰山学者"建设工程专项经费资助
关键词
二甲亚砜
培养实验
营养盐
叶绿素A
黄海
Dimethylsulfoxide
mesocosm experiment
nutrient
Chlorophyll a
Yellow Sea
