东北太平洋中国合同区的叶绿素a和初级生产力  

Chlorophyll a and primary production in the Chinese Contract Area in the east-north Pacific

作　　者：陈兴群[1] 林荣澄[1] 

机构地区：[1]国家海洋局第三海洋研究所,福建厦门361005

出　　处：《海洋学报》2007年第5期146-153,共8页

基　　金：国家重点基础研究专项经费资助项目(G2000078500);中国大洋矿产资源勘探开发专项基金资助项目(DY105-02-01DY105-02-03)

摘　　要：根据东北太平洋中国合同区东区和西区从1994年至2003年6个航次（DY85-4,DY95-7,DY95-8,DY95-10,DY105-11和DY105-12.14）初级生产力调查资料编写.结果表明：次表层高值分布为叶绿素a分布的一般特征,从表层至水深50 m,数值为0.1 mg/m^3左右,在水深50-100 m上下,数值约在0.2-0.4 mg/m^3之间,在水深大于100 m,特别是150 m以深数值逐渐减小为零;东区初级生产力（C）测值在76.8-191.9 mg/（m^2·d）,平均为116.1 mg/（m^2·d）;西区的在73.1-222.5 mg/（m^2·d）,平均为127.1 mg/（m^2·d）;在水深0-125 m,0.2-2μm颗粒的微微型浮游植物的叶绿素a比例占叶绿素a总量的70%以上,而在水深125 m以深,占50%以下;反之,2-20μm和大于20μm两种粒级所占比例的和在0-125 m深度范围占30%以下,在水深125m以深时为50%以上.调查显示东、西两区属于初级生产力比较低的海域.It was formed based on the data obtained from the east and west regions of Chinese Contract Area in the NE of Pacific Ocean during 6 surveys,DY85-4,DY95-7,DY95-8,DY95-10,DY105-11 and DY105-12.14,in years from 1994 to 2003.The result shows that the maximum chlorophyll a distribution was located under the subsurface water layer,following the general distribution pattern for Chlorophyll a.It was measured that the chlorophyll a around 0.1 mg/m^3 was found from the surface water to 50 m depth and around 0.2-0.4 mg/m^3 was from 50 to 100 m.It diminished below 100m depth and zeroed particularly at 150 m depth.The primary production（C） in range from 76.8～191.9 mg/（m^2 ·d） with average 116.1 mg/（m^2 ·d） was located in the east region,and the production from 73.1 to 222.5 mg/（m^2·d） with average 127.1 mg/（m^2·d） was in the west region.The picoplanktonic chlorophyll a in particle size from 0.2 to 2 μm was accounted for more than 70% of the total and it decreased to less than 50% in depth below 125 m.The particles with size from 2 to 20 μm and over 20 μm were only accounted for less than 30% of the total at depth from 0 to 125 m while it rose above 50% below 125 m depth.It demonstrated that the primary production in both regions should be classified as the areas of lower productivity.

关 键 词：东北太平洋中国合同区 叶绿素A 粒级分布 初级生产力 

分 类 号：Q178.53[生物学—水生生物学]