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《Marine Sciences》 2008-05
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Preservation of organic carbon and chlorophylls in the intertidal sediments of Jiaozhou Bay

LüXin-xin 1,ZOU Li 1,LIU Su-mei 2,WANG Fang 3(1.Key Lab of Marine Environmental Science and Ecology,Ministry of Education,Ocean University of China,Qingdao 266100,China;2.College of Chemical and Engineering,Ocean University of China,Qingdao 266100,China;3.Key Laboratory of Mariculture,Ministry of Education,Ocean University of China,Qingdao 266003,China)  
In order to explore the preservation and degradation characteristics of intertidal sediments,the contents of organic carbon,nitrogen,and chlorophylls were analyzed in sediment cores from two sites,representing the area near to river and sea,respectively,in the intertidal areas of Jiaozhou Bay.The data show that the organic carbon and total nitrogen concentrations in intertidal sediments of Jiaozhou Bay were variable(ranged at 1.0~3.0 g/kg and 0.1~0.3 g/kg,respectively),and no obvious trends were discovered in the depth profiles in the sediments.Chlorophyll a concentrations in the intertidal sediments of Jiaozhou Bay show a significant decrease with depth going down to 15-17 cm and then remained unchanged,ranging from 0.3 to 5.2 g/kg.C/N ratios suggested that the organic matter in the intertidal sediments of Jiaozhou Bay originated from both sea production,terrigenous input,and organic matter from sea production degreed prior to that from terrigenous input.
【Fund】: 国家自然科学基金项目(40206017);; 国家重大基础发展规划项目(2002CB412402)
【CateGory Index】: Q948
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