| 胶州湾沉积物中有机质的来源与组成及其对百年尺度环境变化的指示 |
| |
| 引用本文： | 康绪明,宋金明,袁华茂,李学刚,李宁,段丽琴.胶州湾沉积物中有机质的来源与组成及其对百年尺度环境变化的指示[J].海洋学报(英文版),2017,36(11):68-78. |
| |
| 作者姓名： | 康绪明 宋金明 袁华茂 李学刚 李宁 段丽琴 |
| |
| 作者单位： | 中国科学院海洋研究所, 海洋生态与环境科学重点实验室, 青岛, 266071;青岛海洋科学与技术国家实验室海洋生态与环境科学功能实验室, 青岛, 266071,中国科学院海洋研究所, 海洋生态与环境科学重点实验室, 青岛, 266071;青岛海洋科学与技术国家实验室海洋生态与环境科学功能实验室, 青岛, 266071;University of Chinese Academy of Sciences, Beijing 100049, China,中国科学院海洋研究所, 海洋生态与环境科学重点实验室, 青岛, 266071;青岛海洋科学与技术国家实验室海洋生态与环境科学功能实验室, 青岛, 266071;University of Chinese Academy of Sciences, Beijing 100049, China,中国科学院海洋研究所, 海洋生态与环境科学重点实验室, 青岛, 266071;青岛海洋科学与技术国家实验室海洋生态与环境科学功能实验室, 青岛, 266071;University of Chinese Academy of Sciences, Beijing 100049, China,中国科学院海洋研究所, 海洋生态与环境科学重点实验室, 青岛, 266071;青岛海洋科学与技术国家实验室海洋生态与环境科学功能实验室, 青岛, 266071;University of Chinese Academy of Sciences, Beijing 100049, China,中国科学院海洋研究所, 海洋生态与环境科学重点实验室, 青岛, 266071;青岛海洋科学与技术国家实验室海洋生态与环境科学功能实验室, 青岛, 266071;University of Chinese Academy of Sciences, Beijing 100049, China |
| |
| 摘 要： | The Jiaozhou Bay is characterized by heavy eutrophication that is associated with intensive anthropogenic activities. Four core sediments from the Jiaozhou Bay are analyzed using bulk technologies, including sedimentary total organic carbon(TOC), total nitrogen(TN), the stable carbon(δ~(13)C) and nitrogen(δ~(15) N) isotopic composition to obtain the comprehensive understanding of the source and composition of sedimentary organic matter and further shed light on the environmental changes of the Jiaozhou Bay on a centennial time scale.Results suggest that the TOC and TN concentrations increase in the upper core, having indicated a probable eutrophication process since the 1920 s in the inner bay and the 2000 s in the bay mouth. The TOC and TN concentrations outside the bay have also changed since 1916 owing to the variation of terrigenous input.Considering TOC/TN ratio, δ~(13) C and δ~(15) N, it can be concluded there is a mixture of terrigenous and marine organic matter sources in the study area. A simple two end-member(terrigenous and marine) mixing model usingδ~(13) C indicats that 45%–79% of TOC in the Jiaozhou Bay is from the marine source. The environmental changes of the Jiaozhou Bay are recorded by geochemical proxies, which are influenced by the intensive anthropogenic activities(e.g., extensive use of fertilizers, and discharge of sewage) and climate changes(e.g., rainfall).
|
| 关 键 词： | 有机质 来源 人类活动 环境变化 沉积物 胶州湾 |
| 收稿时间： | 2017/1/12 0:00:00 |
| 修稿时间： | 2017/2/8 0:00:00 |
The sources and composition of organic matter in sediments of the Jiaozhou Bay:implications for environmental changes on a centennial time scale |
| |
| KANG Xuming,SONG Jinming,YUAN Huamao,LI Xuegang,LI Ning and DUAN Liqin.The sources and composition of organic matter in sediments of the Jiaozhou Bay:implications for environmental changes on a centennial time scale[J].Acta Oceanologica Sinica,2017,36(11):68-78. |
| |
| Authors: | KANG Xuming SONG Jinming YUAN Huamao LI Xuegang LI Ning and DUAN Liqin |
| |
| Institution: | Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China;Laboratory for Marine Ecology and Environmental Sciences, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China,Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China;Laboratory for Marine Ecology and Environmental Sciences, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China;University of Chinese Academy of Sciences, Beijing 100049, China,Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China;Laboratory for Marine Ecology and Environmental Sciences, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China;University of Chinese Academy of Sciences, Beijing 100049, China,Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China;Laboratory for Marine Ecology and Environmental Sciences, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China;University of Chinese Academy of Sciences, Beijing 100049, China,Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China;Laboratory for Marine Ecology and Environmental Sciences, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China;University of Chinese Academy of Sciences, Beijing 100049, China and Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China;Laboratory for Marine Ecology and Environmental Sciences, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China;University of Chinese Academy of Sciences, Beijing 100049, China |
| |
| Abstract: | The Jiaozhou Bay is characterized by heavy eutrophication that is associated with intensive anthropogenic activities. Four core sediments from the Jiaozhou Bay are analyzed using bulk technologies, including sedimentary total organic carbon (TOC), total nitrogen (TN), the stable carbon (δ 13C) and nitrogen (δ 15N) isotopic composition to obtain the comprehensive understanding of the source and composition of sedimentary organic matter and further shed light on the environmental changes of the Jiaozhou Bay on a centennial time scale. Results suggest that the TOC and TN concentrations increase in the upper core, having indicated a probable eutrophication process since the 1920s in the inner bay and the 2000s in the bay mouth. The TOC and TN concentrations outside the bay have also changed since 1916 owing to the variation of terrigenous input. Considering TOC/TN ratio, δ 13C and δ 15N, it can be concluded there is a mixture of terrigenous and marine organic matter sources in the study area. A simple two end-member (terrigenous and marine) mixing model using δ 13C indicats that 45%–79% of TOC in the Jiaozhou Bay is from the marine source. The environmental changes of the Jiaozhou Bay are recorded by geochemical proxies, which are influenced by the intensive anthropogenic activities (e.g., extensive use of fertilizers, and discharge of sewage) and climate changes (e.g., rainfall). |
| |
| Keywords: | organic matter sources anthropogenic activities environmental changes sediments Jiaozhou Bay |
| 本文献已被 CNKI SpringerLink 等数据库收录！ |
| 点击此处可从《海洋学报(英文版)》浏览原始摘要信息 |
| 点击此处可从《海洋学报(英文版)》下载免费的PDF全文 |
|
