【作者】 陈兴群； 李国庭； 余汉生； 陈其焕；

【Author】 Chen Xingqun,Li Guoting,Yu Hansheng,Chen QihuanThird Institute of Oceanography, State Oceanic Administration, Xiamen 361005South China Sea Branch , State Oceanic Administration, Guangzhou 510300

【机构】 国家海洋局第三海洋研究所； 国家海洋局南海分局；

【摘要】 描述台湾岛以东副热带环流区夏、冬季叶绿素a和初级生产力分布,及其与春、秋季调查结果的综合分析:叶绿素a平均总量夏、冬季分别为31.86和33.55 mg/m2.夏季初级生产力高于冬季的,分别为126.76和52.48 mg(m2·d).次表最大值层成为调查海域水体叶绿素a分布的一个特点,范围位于50-150 m,数值介于0.10-0.40 mg/m3之间.平面分布趋向表明,台湾岛以东黑潮流区夏、冬季叶绿素a总量均高于流区以东的环流区的.浮游植物的粒级结构分析显示,夏、冬季以小于3.00 μm的微微型浮游植物居优势,占叶绿素a总量的80%左右,3.00-20.00 μm和大于20.00μm的微型浮游植物均约占10%.对季节变化的分析表明,低生物量、低生产力、微微型浮游植物居初级生物量的主体是调查海域生态系中初级生态链的特征.更多还原

【Abstract】 The distribution and variation of primary production, and size structure of chlorophyll a in summer and winter are investigated in the subtropical circulation System in east of Chinese Taiwan Island(18°30’-25°50’ N, 120°45’-129°00’ E). The results show that the chlorophyll a subsurface maximum layer varies in the depth of 50-150 m and maximum occurs in the depth of 75-100 m, with the concentration of 0.10-0.40 mg/m3. Total amounts of chlorophyll a integrated from the surface to 150 m depth in summer and winter are similar with average of 31.86 and 33.55 mg/m2 respectively. Distribution trend of total amount of chlorophyll a shows that the high chlorophyll a distributes in the Kuroshio area east of Taiwan Island. Average daily primary production is high in summer and low in winter with measuring 126.76 and 52.48 mg/(m2·d) respectively. Size structure of chlorophyll a indicates that the size of chlorophyll a with leas than 3.00 μm accounts about for 80% of the total chlorophyll a in summer and winter. Size of chlorophyll a from 3.00 to 20.00 μm and greater than 20.00 μm accounts about for 10% in above seasons . Low biomass with its seasonal variety and the picoplankton are characteristics of this survey area.更多还原