Phosphorus forms and distribution in Zhejiang coastal sediment in the East China Sea  

作　　者：Min CONG Tao JIANG Yu-zao QI Hong-po DONG De-qiang TENG Song-hui LU 

机构地区：[1]Research Center for Harmful Algae and Marine Biology,Jinan University [2]Journal Editorial Department,Jinan University [3]Yellow Sea Fisheries Research Institute,Chinese Academy of Fishery Sciences [4]Research Center for Harmful Algae and Marine Biology/Key Laboratory of Eutrophication and Red Tide Prevention of Guangdong Higher Education Institutes,Jinan University [5]Guangzhou Marine Geological Survey

出　　处：《International Journal of Sediment Research》2014年第2期278-284,共7页国际泥沙研究（英文版）

基　　金：funded by the National Basic Research Program(973 Program)(No.2010CB428702);the National Marine Public Welfare Research Project of China(201305003-2);the National Natural Science Foundation of China (41106090);Special Project for Science and Technology of Environmental Protection of Zhejiang Province(2011A31);Open Fund of Guangdong Provincial Key Laboratory of Fishery Ecology and Environment(LFE-2010-04)

摘　　要：Surface and core sediment samples were collected from Zhejiang coastal waters of the East China Sea to study phosphorus（P） forms and understand the potential release of P as well as adsorption.The sediments were extracted sequentially to determine four phosphorus fractions,and non-sequentially for total phosphorus（TP）.The total concentration of phosphorus in the surface sediments ranged from 527.2 to 680.5 mg kg-1.Inorganic P was the major form and accounted for 84-94%of TP.Among the four forms,P-Detrital was dominant（58.6-73.2%）,followed by P-CDB（10.5-20.9%）,P-Organic（6.1-15.9%）,and P-CFA（5.9-16.3%）.The distribution pattern of TP in the surface sediments was similar to that of P-Detrital and P-Organic,but different from P-CDB and P-CFA.A relatively high level of phosphorus was observed in estuarine sediments,reflecting the influence from terrestrial input.Phosphorus in all forms in core sediments at each station decreased with depth.In addition,potentially bio-available phosphorus accounted for 20-34%of TP.Surface and core sediment samples were collected from Zhejiang coastal waters of the East China Sea to study phosphorus（P） forms and understand the potential release of P as well as adsorption.The sediments were extracted sequentially to determine four phosphorus fractions,and non-sequentially for total phosphorus（TP）.The total concentration of phosphorus in the surface sediments ranged from 527.2 to 680.5 mg kg-1.Inorganic P was the major form and accounted for 84-94%of TP.Among the four forms,P-Detrital was dominant（58.6-73.2%）,followed by P-CDB（10.5-20.9%）,P-Organic（6.1-15.9%）,and P-CFA（5.9-16.3%）.The distribution pattern of TP in the surface sediments was similar to that of P-Detrital and P-Organic,but different from P-CDB and P-CFA.A relatively high level of phosphorus was observed in estuarine sediments,reflecting the influence from terrestrial input.Phosphorus in all forms in core sediments at each station decreased with depth.In addition,potentially bio-available phosphorus accounted for 20-34%of TP.

关 键 词：Phosphorus forms DISTRIBUTION SEDIMENT Zhejiang coastal waters East China Sea 

分 类 号：P736.21[天文地球—海洋地质]