The biogenic silica composition, behavior and budget in the Changjiang Estuary

doi:10.1007/s13131-018-1159-7

	The biogenic silica composition, behavior and budget in the Changjiang Estuary
	Ran, Xiangbin 1,2; Liu, Jun 1,2; Liu, Sen 1; Zang, Jiaye 1; Wang, Baodong 1,2; Zhao, Jun 3
刊名	ACTA OCEANOLOGICA SINICA
	2018-01
卷号	37 期号:1 页码:60-72
关键词	silica cycle diatoms phytoliths budget Changjiang Estuary
ISSN号	0253-505X
DOI	10.1007/s13131-018-1159-7
英文摘要	Three comprehensive surveys were performed in the Changjiang (Yangtze River) Estuary (CJE) to understand the biogenic silica (BSi) composition, behavior and budget. It is indicated that the BSi is composed of phytoliths, phytoplankton and sponges; phytolith BSi has 16 forms and account for 23% to 83% of the bulk BSi in the maximum turbidity zone. The budget shows that the major exogenous BSi source in the water column of the CJE is the riverine input, accounting for 95% of the total BSi input. Dominant processes that maintain BSi levels in the water column are the primary production (55 Gmol/a) and the subsequent BSi sedimentation (46 Gmol/a); and the BSi pool produced by the primary production represents two point three times the BSi loading of the Changjiang River and 63% of the BSi output, respectively. The net export (26 Gmol/a) of BSi from the CJE to the East China Sea and Yellow Sea roughly equals the riverine BSi loading. The observed total accumulation of BSi is one point seven times larger than the loading of total BSi output, with 53% to 88% of phytolith BSi and their assemblage, indicating that there has already been a "filter" of terrestrial BSi. The reverse weathering in sediments is an important process for the reactive silica removal in the CJE due to authigenic alterations. It is indicated that the phytolith fluxes in the suspended load represent a significant BSi source in the estuary, and the CJE would act as a net BSi sink.
资助项目	National Science Foundation of China[41776089] ; National Science Foundation of China[41576084]
WOS关键词	EAST CHINA SEA ; GROUNDWATER DISCHARGE SGD ; YELLOW SEA ; RADIUM ISOTOPES
WOS研究方向	Oceanography
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000419193900007
内容类型	期刊论文
源URL	[http://ir.fio.com.cn:8080/handle/2SI8HI0U/26539]
专题	自然资源部第一海洋研究所
通讯作者	Ran, Xiangbin
作者单位	1.State Ocean Adm, Inst Oceanog 1, Marine Ecol Res Ctr, Qingdao 266061, Peoples R China 2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Geol, Qingdao 266237, Peoples R China 3.State Ocean Adm, Inst Oceanog 2, Key Lab Marine Ecosyst & Biogeochem, Hangzhou 310012, Zhejiang, Peoples R China
推荐引用方式 GB/T 7714	Ran, Xiangbin,Liu, Jun,Liu, Sen,et al. The biogenic silica composition, behavior and budget in the Changjiang Estuary[J]. ACTA OCEANOLOGICA SINICA,2018,37(1):60-72.
APA	Ran, Xiangbin,Liu, Jun,Liu, Sen,Zang, Jiaye,Wang, Baodong,&Zhao, Jun.(2018).The biogenic silica composition, behavior and budget in the Changjiang Estuary.ACTA OCEANOLOGICA SINICA,37(1),60-72.
MLA	Ran, Xiangbin,et al."The biogenic silica composition, behavior and budget in the Changjiang Estuary".ACTA OCEANOLOGICA SINICA 37.1(2018):60-72.