The sources and composition of organic matter in sediments of the Jiaozhou Bay:implications for environmental changes on a centennial time scale
文献类型：CNKI期刊论文
| 作者 | KANG Xuming; SONG Jinming ; YUAN Huamao; LI Xuegang; LI Ning; DUAN Liqin
|
| 发表日期 | 2017-11-15 |
| 出处 | Acta Oceanologica Sinica
 |
| 关键词 | organic matter sources anthropogenic activities environmental changes sediments Jiaozhou Bay |
| 英文摘要 | 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). |
| 文献子类 | CNKI期刊论文 |
| 资助机构 | The Joint Fund between Natural Science Foundation of China and Shandong Province under contract No.U1606404 ; the National Basic Research Program(973 Program)of China under contract Nos 2015CB452901 and 2015CB452902 ; the National Key Research and Development Plan Sino-Australian Centre for Healthy Coasts under contract No.2016YFE0101500 ; the Program for Aoshan Excellent Scholars of Qingdao National Laboratory for Marine Science and Technology of China under contract No.2015ASTP-OS13 |
| 卷 | v.36期:11页:72-82 |
| 语种 | 英文; |
| 分类号 | P736.21 |
| ISSN号 | 0253-505X |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/189083]  |
| 专题 | 中国科学院海洋研究所 |
| 作者单位 | 1.KeyLaboratoryofMarineEcologyandEnvironmentalSciences,InstituteofOceanology,ChineseAcademyofSciences 2.LaboratoryforMarineEcologyandEnvironmentalSciences,QingdaoNationalLaboratoryforMarineScienceandTechnology 3.UniversityofChineseAcademyofSciences |
| 推荐引用方式 GB/T 7714 | KANG Xuming,SONG Jinming,YUAN Huamao,et al. The sources and composition of organic matter in sediments of the Jiaozhou Bay:implications for environmental changes on a centennial time scale. 2017. |
入库方式： OAI收割
来源：海洋研究所
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