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Environmental significance of biogenic elements in surface sediments of the Changjiang Estuary and its adjacent areas
Yu, Yu1,2; Song, Jinming1; Li, Xuegang1; Yuan, Huamao1; Li, Ning1; Duan, Liqin1; Song, JM
2013-11-01
发表期刊JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA
ISSN1001-0742
卷号25期号:11页码:2185-2195
文章类型Article
摘要Biogenic elements and six phosphorus (P) fractions in surface sediments from the Changjiang Estuary and adjacent waters were determined to investigate the governing factors of these elements, and further to discuss their potential uses as paleo-environment proxies and risks of P release from sediment. Total organic carbon (TOC) and leachable organic P (Lea-OP) showed high concentrations in the estuary, Zhejiang coast and offshore upwelling area. They came from both the Changjiang River and marine biological input. Biogenic silicon (BSi) exhibited a high concentration band between 123 and 124 degrees E. BSi mainly came from diatom production and its concentration in the inshore area was diluted by river sediment. Total nitrogen (TN) was primarily of marine biogenic origin. Seaward decreasing trends of Fe-bound P and Al-bound P revealed their terrestrial origins. Influenced by old Huanghe sediment delivered by the Jiangsu coastal current, the maximum concentration of detrital P (Det-P) was observed in the area north of the estuary. Similar high concentrations of carbonate fluorapatite (CFA-P) and CaCO(3)in the southern study area suggested marine calcium-organism sources of CFA-P. TOC, TN and non-apatite P were enriched in fine sediment, and Det-P partially exhibited coarse-grain enrichment, but BSi had no correlation with sediment grain size. Different sources and governing factors made biogenic elements and P species have distinct potential uses in indicating environmental conditions. Transferable P accounted for 14%-46% of total P. In an aerobic environment, there was low risk of P release from sediment, attributed to excess Fe oxides in sediments.; Biogenic elements and six phosphorus (P) fractions in surface sediments from the Changjiang Estuary and adjacent waters were determined to investigate the governing factors of these elements, and further to discuss their potential uses as paleo-environment proxies and risks of P release from sediment. Total organic carbon (TOC) and leachable organic P (Lea-OP) showed high concentrations in the estuary, Zhejiang coast and offshore upwelling area. They came from both the Changjiang River and marine biological input. Biogenic silicon (BSi) exhibited a high concentration band between 123 and 124 degrees E. BSi mainly came from diatom production and its concentration in the inshore area was diluted by river sediment. Total nitrogen (TN) was primarily of marine biogenic origin. Seaward decreasing trends of Fe-bound P and Al-bound P revealed their terrestrial origins. Influenced by old Huanghe sediment delivered by the Jiangsu coastal current, the maximum concentration of detrital P (Det-P) was observed in the area north of the estuary. Similar high concentrations of carbonate fluorapatite (CFA-P) and CaCO(3)in the southern study area suggested marine calcium-organism sources of CFA-P. TOC, TN and non-apatite P were enriched in fine sediment, and Det-P partially exhibited coarse-grain enrichment, but BSi had no correlation with sediment grain size. Different sources and governing factors made biogenic elements and P species have distinct potential uses in indicating environmental conditions. Transferable P accounted for 14%-46% of total P. In an aerobic environment, there was low risk of P release from sediment, attributed to excess Fe oxides in sediments.
关键词Biogenic Elements Phosphorus Fractions Sediment Source Grain Size Effect Changjiang Estuary And Adjacent Waters
学科领域Environmental Sciences & Ecology
DOI10.1016/S1001-0742(l2)60302-7
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收录类别SCI
语种英语
WOS研究方向Environmental Sciences & Ecology
WOS类目Environmental Sciences
WOS记录号WOS:000326994200003
WOS关键词EAST CHINA SEA ; YANGTZE-RIVER ; ORGANIC-CARBON ; MARINE-SEDIMENTS ; PHOSPHORUS TRANSPORT ; DIATOM ASSEMBLAGES ; CONTINENTAL-SHELF ; OXYGEN DEPLETION ; NATURAL WATERS ; LAKE-ONTARIO
WOS标题词Science & Technology ; Life Sciences & Biomedicine
引用统计
被引频次:30[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.qdio.ac.cn/handle/337002/16472
专题海洋生态与环境科学重点实验室
通讯作者Song, JM
作者单位1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Ecol & Environm Sci, Qingdao 266071, Peoples R China
2.Qingdao Agr Univ, Marine Sci & Engn Coll, Qingdao 266109, Peoples R China
第一作者单位中国科学院海洋研究所
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Yu, Yu,Song, Jinming,Li, Xuegang,et al. Environmental significance of biogenic elements in surface sediments of the Changjiang Estuary and its adjacent areas[J]. JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,2013,25(11):2185-2195.
APA Yu, Yu.,Song, Jinming.,Li, Xuegang.,Yuan, Huamao.,Li, Ning.,...&Song, JM.(2013).Environmental significance of biogenic elements in surface sediments of the Changjiang Estuary and its adjacent areas.JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,25(11),2185-2195.
MLA Yu, Yu,et al."Environmental significance of biogenic elements in surface sediments of the Changjiang Estuary and its adjacent areas".JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA 25.11(2013):2185-2195.
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