作者机构:[1]Department of Oceanography, Xiamen University, Xiamen 361005, China, [2]State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361005, China
相关基金:Foundation item: The National Natural Science Foundation of China under contract Nos 40606022 and 90411016; the National Key Basic Research Special Foundation Program of China under contract No. 2005CB422305. Acknowledgements We are grateful to the reviewers for their insightand constructive comments on this study