Biogeochemistry of bulk organic matter and biogenic elements in surface sediments of the Yangtze River Estuary and adjacent sea
作者： Bin Yang , Lu Cao , Su-Mei Liu , Guo-Sen Zhang
DOI: 10.1016/J.MARPOLBUL.2015.05.003
关键词: Total organic carbon 、 Biogeochemical cycle 、 Phosphorus 、 Environmental chemistry 、 Oceanography 、 Biogeochemistry 、 Geology 、 Nitrogen 、 Estuary 、 Organic matter 、 Isotopes of carbon
摘要: This study investigated the distribution and roles of total organic carbon (TOC), biogenic silicon (BSi), various forms nitrogen (N) phosphorus (P), stable isotope (δ(13)C) in surface sediments Yangtze River Estuary (YRE) adjacent sea. Terrestrial input accounted for 12-63% matter area. The elements was affected by Changjiang Diluted Water, Jiangsu Coastal Current, human activities, marine biological processes, sediment grain size. Potentially bioavailable N P an average 79.6% (TN) 31.8% (TP), respectively. burial fluxes TOC, BSi, TN TP were 39.74-2194.32, 17.34-517.48, 5.02-188.85 3.10-62.72 μmol cm(-2) yr(-1), molar ratios N/P (1.2-5.0), Si/P (5.0-14.8) Fe/P (21-61) indicated that much sequestered sediments.
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