首页 | 期刊简介 | 编委会 | 投稿指南 | 常用下载 | 联系我们 | 期刊订阅 | In English
引用本文:刘宗广,吴 莹,胡 俊,朱卓毅,赵 苑,宣基亮.东海陆架典型断面颗粒态氨基酸的分布及控制因素分析.海洋与湖沼,2013,44(3):563-569.
【打印本页】   【HTML】   【下载PDF全文】   查看/发表评论  下载PDF阅读器  关闭
←前一篇|后一篇→ 过刊浏览    高级检索
本文已被:浏览 2507次   下载 2651 本文二维码信息
码上扫一扫!
分享到: 微信 更多
东海陆架典型断面颗粒态氨基酸的分布及控制因素分析
刘宗广1, 吴 莹1, 胡 俊1, 朱卓毅1, 赵 苑2, 宣基亮3
1.华东师范大学 河口海岸学国家重点实验室;2.中国科学院海洋研究所海洋生态与环境科学重点实验室;3.国家海洋局第二海洋研究所卫星海洋环境动力学国家重点实验室
摘要:
采用高效液相色谱法, 通过现场调查对东海典型PN断面(文中为C断面)的颗粒态氨基酸(Particulate Amino Acids, PAA)进行了分析, 并结合叶绿素a(Chl a)、颗粒有机碳(POC)、颗粒有机氮(PON)及颗粒态氨基酸的构型特征(D和L型)等参数探讨了该区颗粒有机氮的来源和降解情况。结果表明, 在长江口最大浑浊带, 受咸淡水混合和生物现场生产双重作用影响, POC、PON以及PAA的总浓度均达到了极大值, 其中, 受再悬浮作用影响, 底层水体中的有机物呈现高度降解的状态; 近岸水华区域的颗粒态氨基酸则更多来源于现场生产, 而且POC/Chl a质量比值与降解因子DI值的负相关特征表明冲淡水向海洋输送的过程中, 现场生产力对颗粒有机碳的贡献比重逐渐增大, 悬浮颗粒物也变得越来越新鲜。值得关注的是, 一些D型氨基酸[如D型天冬氨酸(D-Asp), D型丙氨酸(D-Ala)]与细菌生物量之间存在良好的正相关性, 暗示颗粒态氨基酸在受到物理水团和生物现场生产作用控制的同时, 还受控于微微型浮游生物以及异养细菌。
关键词:  悬浮颗粒物, 颗粒态氨基酸, 稳定同位素, 异养细菌, 黑潮, 东海陆架, 控制因素
DOI:10.11693/hyhz201303004004
分类号:
基金项目:国家重点基础研究发展计划(973)项目, 2011CB409802 号; 科技部国际合作项目, 2010DFA24590 号; 国家自然科学基金项目, 41076052 号; 国际科学基金项目, A/5112-1 号
附件
DISTRIBUTION OF PARTICULATE AMINO ACIDS AND ITS CONTROLLING FACTORS IN THE PN TRANSECTION OF THE EAST CHINA SEA SHELF
LIU Zong-Guang1, WU Ying1, HU Jun1, ZHU Zhuo-Yi1, ZHAO Yuan2, XUAN Ji-Liang3
1.State Key Laboratory of Estuarine and Coastal Research, East China Normal University;2.Key Laboratory of Marine Ecology and Environmental Science, Institute of Oceanology, Chinese Academy of Sciences;3.State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, State Oceanic Administration
Abstract:
Particulate amino acids (PAA) were analyzed by high performance liquid chromatography (HPLC) after field work in the PN transection (Section C in this paper) of the East China Sea on May 2011, and several parameters were analyzed including chlorophyll a (Chl a), particulate organic carbon (POC), nitrogen (PON) and configuration of amino acids (D- and L-enan?tiomers), to understand the origin and degree of degradation of particulate organic nitrogen (PON) deeply. It turned out that at the Changjiang River estuarine turbidity maximum zone, the total concentrations of POC, PON and PAA reached their maximum influenced by the dynamic mixing of fresh and salt water and in situ production of phytoplankton, with the organic matters in turbid bottom layer presenting high degree of degradation caused by the resuspended sediments. On the shelf of nearshore zone, phytoplankton production and biological detritus became the main origin of PAA in water volume including water bloom. The mass ratio of POC/Chl a display a negative correlation with the degradation index (DI) inferring that field productivity contributes more organic carbon to the SPM in the transporting process of fresh water to the sea, with the SPM becoming fresher. Particularly, some D-enantiomers of amino acids such as aspartic acid and alanine performed a good positive correlation with the cell abundance of picoeukaryotes and heterotrophic bacteria, inferring that additional to the dynamics of water mass and biological field production, PAAs were also controlled by degradation process of bacteria.
Key words:  Suspended particulate matters, Particulate amino acids, Stable isotopes, Heterotrophic bacteria, Kuroshio, East China Sea Shelf, Controlling factor
版权所有 海洋与湖沼 Oceanologia et Limnlolgia Sinica Copyright©2008 All Rights Reserved
主管单位:中国科协技术协会 主办单位:中国海洋湖沼学会
地址:青岛市海军路88号  邮编:266400  电话:0532-82898753  E-mail:ols@qdio.ac.cn
技术支持:北京勤云科技发展有限公司