CO_2 flux and seasonal variability in the turbidity maximum zone and surrounding area in the Changjiang River estuary
文献类型：CNKI期刊论文
| 作者 | Li XG(李学刚); Song JM(宋金明) ; Yuan HM(袁华茂); Li N(李宁); Duan LQ(段丽琴); Qu BX(曲宝晓)
|
| 发表日期 | 2015-01-15 |
| 出处 | Chinese Journal of Oceanology and Limnology
 |
| 关键词 | CO_2 flux seasonal variability turbidity maximum zone Changjiang River estuary |
| 英文摘要 | The turbidity maximum zone(TMZ) is one of the most important regions in an estuary.However,the high concentration of suspended material makes it difficult to measure the partial pressure of CO_2(pCO_2) in these regions.Therefore,very little data is available on the pCO_2 levels in TMZs.To relatively accurately evaluate the CO_2 flux in an example estuary,we studied the TMZ and surrounding area in the Changjiang(Yangtze) River estuary.From seasonal cruises during February,August,November 2010,and May 2012,the pCO_2 in the TMZ and surrounding area was calculated from pH and total alkalinity(TA)measured in situ,from which the CO_2 flux was calculated.Overall,the TMZ and surrounding area acted as a source of atmosphere CO_2 in February and November,and as a sink in May and August.The average FCO_2was-9,-16,5,and 5 mmol/(m~2·d) in May,August,November,and February,respectively.The TMZ's role as a source or sink of atmosphere CO_2 was quite different to the outer estuary.In the TMZ and surrounding area,suspended matter,phytoplankton,and pH were the main factors controlling the FCO_2,but here the influence of temperature,salinity,and total alkalinity on the FCO_2 was weak.Organic carbon decomposition in suspended matter was the main reason for the region acting as a CO_2 source in winter,and phytoplankton production was the main reason the region was a CO_2 sink in summer. |
| 文献子类 | CNKI期刊论文 |
| 资助机构 | Supported by the Strategic Priority Research Program of Chinese Academy of Sciences(No.XDA05030402) ; the National Natural Science Foundation of China(Nos.U1406403,41121064,41376092) ; the Public Science and Technology Research Funds Projects of Ocean(No.200905012-9) |
| 卷 | v.33期:01页:224-234 |
| 语种 | 英文; |
| 分类号 | P734 |
| ISSN号 | 0254-4059 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/190160]  |
| 专题 | 中国科学院海洋研究所 |
| 作者单位 | InstituteofOceanography,ChineseAcademyofSciences |
| 推荐引用方式 GB/T 7714 | Li XG,Song JM,Yuan HM,et al. CO_2 flux and seasonal variability in the turbidity maximum zone and surrounding area in the Changjiang River estuary. 2015. |
入库方式： OAI收割
来源：海洋研究所
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