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:邵锡斌,吴 莹,胡 俊,鲍红艳.颗粒态有机物在长江口及其邻近海域的夏季分布和影响因素初析.海洋与湖沼,2014,45(6):1288-1294.
【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 1673次   下载 2032 本文二维码信息
码上扫一扫!
分享到: 微信 更多
颗粒态有机物在长江口及其邻近海域的夏季分布和影响因素初析
邵锡斌,吴莹,胡俊,鲍红艳
华东师范大学河口海岸学国家重点实验室上海,华东师范大学河口海岸学国家重点实验室上海,华东师范大学河口海岸学国家重点实验室上海,华东师范大学河口海岸学国家重点实验室上海
摘要:
利用气相色谱法对长江口及其邻近海域的表层颗粒态木质素(p-lignin)进行测定和分析, 结合粒度、有机碳(OC%)、叶绿素a (Chl a)、碳稳定同位素(δ13C)等参数研究颗粒态有机物的夏季分布, 并对其分布影响因素进行了初步分析。结果表明, 悬浮颗粒物粒度组成以粘土和粉砂为主, 平均粒径为7.9μm; OC%的值为0.57—7.41%, Chl a的值为0.35—3.71μg/L, δ13C的值为-25.7‰—-16.6‰, 在口门外水华站位出现OC%、Chl a和δ13C的最大值, 表明浮游生物的现场生产是主要贡献; 紫丁香基酚类(S)、香草基酚类(V)和肉桂基酚类(C)8种木质素酚单体的含量Λ8(相对于总有机碳的含量)为0.0406—1.47 mg/100mgOC; 紫丁香基系列与香草基系列的质量比值(S/V)的分布范围较宽, 为0.5—1.6之间, 均值为0.8; 肉桂基含量与香草基含量比值(C/V)的分布范围为0.02—0.2之间, 均值为0.09; 香草基酚类的酸醛比值[(Ad/Al)v]在0.24—2.30之间。盐度、总悬浮颗粒物(TSM)浓度是控制长江口内区与邻近海域颗粒态有机物来源与分布差异的重要控制因素, 颗粒态木质素在向海输送过程中还会受到矿物组分、生物降解、浮游生物现场生产等各种因素的作用, 使其组成成分和性质发生改变。木质素等参数表明最大浑浊带尽管对颗粒态有机物向海输送有改造作用, 但是影响区域有限。
关键词:  最大浑浊带  长江口  颗粒态有机物  木质素
DOI:10.11693/hyhz20131100172
分类号:
基金项目:国家重点基础研究发展计划(973)项目, 2011CB409801 号; 国家自然科学基金创新群体项目, 41021064 号; 国家自然科学基金项目, 41276081 号
附件
SPATIAL VARIABILITY OF PARTICULATE ORGANIC MATTER IN THE CHANGJIANG RIVER ESTUARY AND ADJACENT REGIONS IN SUMMER
shaoxibin,wuying,hujun and baohongyan
State Key Laboratory of Estuarine and Coastal Research,State Key Laboratory of Estuarine and Coastal Research,State Key Laboratory of Estuarine and Coastal Research,State Key Laboratory of Estuarine and Coastal Research
Abstract:
We analyzed grain size, organic carbon content, chlorophyll a, stable carbon isotopes, and lignin phenols to investigate the distribution and factors that influence the distribution of particulate organic matter in the Changjiang River estuary and adjacent regions in summer of 2011. The result show that suspended particulate matters were composed of clay and silt in average grain size of 7.9μm; OC%: 0.57%—7.41%; Chl a 0.35—3.71?g/L; and ?13C –25.7‰ to –16.6‰. The maximum values of OC%, Chl a and ?13C were detected at algae bloom stations, indicating dominated contribution from phytoplankton. The sum of syringyl (S), vanillyl (V), and cinnamyl (C) phenols that normalized to organic carbon (Λ8) varied from 0.0406—1.47 mg/100mgOC; the S/V ratio was 0.5—1.6 (mean at 0.8) and C/V at 0.02—0.2 (mean at 0.09); (Ad/Al)v value (acid/aldehyde ratio of vanillyl phenol) was 0.24—2.30. Relationship among salinity, total suspended matter (TSM), and the ratio of Λ8 to Chl a* (normalized with particulate organic carbon or POC) suggested that the structural of organic matter in the study region was controlled by salinity and TSM. Mineral composition, microbial degradation, and in situ production were major factors affecting constituent of particulate lignin during transportation from Changjiang River into the sea. Lignin indexes in combination with POC/Chl a ratio indicate that although the TMZ could alter POC during the transportation, the area of the play is limited within the TMZ only.
Key words:  Turbidity Maximum Zone (TMZ)  Changjiang River estuary  particulate organic matter  lignin
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:青岛市福山路32号  邮编:266071  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