南海北部及珠江口细菌生产力研究

刘诚刚; 宁修仁; 蔡昱明; 郝锵; 乐凤凤

南海北部及珠江口细菌生产力研究

1.
卫星海洋环境动力学国家重点实验室国家海洋局第二海洋研究所, 浙江杭州 310012;国家海洋局海洋生态系统与生物地球化学重点实验室, 浙江杭州 310012
2.
国家海洋局海洋生态系统与生物地球化学重点实验室, 浙江杭州 310012

基金项目: 国家自然科学基金重点项目"南海基础生产力结构的物理-生物海洋学耦合过程及其对碳循环的影响"(90211021);国家海洋局青年海洋科学基金(2004101)

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出版历程
- 收稿日期: 2005-07-04
- 修回日期: 2006-09-07

Bacterioplankton production in the Zhujiang River Estuary and the adjacent northern South China Sea

1.
State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012 China;Key Laboratory of Marine Ecosystem and Biogeochemistry, State Oceanic Administration, Hangzhou 310012 China
2.
Key Laboratory of Marine Ecosystem and Biogeochemistry, State Oceanic Administration, Hangzhou 310012 China

摘要

摘要: 2004年2~3月和2004年8~9月两个航次中对珠江口及南海北部海域的异养浮游细菌生物量、生产力及其调控机制进行了观测研究.结果表明,营养物质的供应对调查区域真光层水体内的细菌生物量和生产力起着主要控制作用,从而导致冬季航次珠江口-陆架-外海调查断面表层细菌生物量和生产力呈现沿盐度梯度向外海逐渐降低的特征.就南海北部调查区域而言,冬季真光层异养细菌生物量(C)平均为(712±290)mg/m²,夏季平均为(937±397)mg/m²;真光层细菌生产力(C)冬季平均为(65.1±42.8)mg/(m²·d),夏季平均(52.5±28.6)mg/(m²·d).本调查中,南海北部海区IBP和IPP比值范围是4%~96%,平均为26%,IBP和IPP比值与初级生产力呈负相关,其分布特征与新生产力f比的分布趋势相反,显示了异养细菌在真光层物质循环过程中所发挥的作用在南海近岸富营养海域和外海寡营养海域之间的差异.
- 异养浮游细菌 /
- 细菌生产力 /
- 细菌生物量 /
- 细菌丰度 /
- 南海 /
- 珠江口
Abstract: Abundance,biomass and production of bact erioplankt on,primary production,new production,and the related environmental parameters were measured in the Zhujiang River Estuary and the adjacent northern South China Sea in winter and summer of 2004.The results showed that the substrate supply,including dissolved organic mater from phytoplankt on and river input and inorg anic nutrients,mightbe the most important factor governing the spatial patterns of the standing stock and production of bact erioplankton.As the results,biomass and production of bact erioplankt on gradually decreased from the estuary to the shelf and open sea along the salinity gradient.IBP:IPP ratios,r anged 4%~96%,were negatively correlated with IPP,while the spatial patterns of IBP:IPP ratios were opposite to that of new produc-tion f-ratio.Furthermore,the spatial difference of the importance of bacterio plankt on in the euphotic zone material cycle was also discussed.
- bacterioplankton /
- bacterial production /
- bacterial biomass /
- northern South China Sea /
- Zhujiang River Estuary /

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