Title

南黄海表层不同粒级沉积物中氮的地球化学特征

Translated Titles

Geochemical Characteristics of Nitrogen in Different Grain Size Sediment from the Southern Huanghai Sea

Authors

吕晓霞(Xiao-Xia Lü);宋金明(Jin-Ming Song);袁华茂(Hua-Mao Yuan);李学刚(Xue-Gang Li);詹天荣(Tian-Rong Zhan);李宁(Ning Li);高学鲁(Xue-Lu Gao)

Key Words

沉积物 ; 粒级 ; 氮循环 ; 黄海 ; sediment ; grain size ; nitrogen cycling ; Huanghai Sea

PublicationName

海洋學報

Volume or Term/Year and Month of Publication

27卷1期(2005 / 01 / 01)

Page #

64 - 69

Content Language

簡體中文

Chinese Abstract

The geochemical characteristics of transferable nitrogen in different grain size sediments are different. The content of SOEF-N is the highest in all transferable nitrogen. IEF-N is the predominant form in inorganic transferable nitrogen, which could take part in cycling more easily. If all the transferable forms of nitrogen could take part in cycling in suitable conditions, their relative contributions to cycling decrease according to the orderof SOEF-N, IEF-N, SAEF-N and WAEF-N. In differen grain size sediments, the absolute contents of different transferable forms of nitrogen are the highest in fine sediments and the lowest in coarse sediments. If the proportions of each grain in sediments are the same, the contents of transferable nitrogen in fine sediments can amount to 60% of the total transferable nitrogen, which is twold times of that in medium size sediments and almost seven times of that in coarse sediments. Namely that, fine sediment has the highest potential contribution to nitrogen cycling. In addition, the relative contents of organic transferable nitrogen increase with grain size finer, while those of inorganic nitrogen decrease.

English Abstract

The geochemical characteristics of transferable nitrogen in different grain size sediments are different. The content of SOEF-N is the highest in all transferable nitrogen. IEF-N is the predominant form in inorganic transferable nitrogen, which could take part in cycling more easily. If all the transferable forms of nitrogen could take part in cycling in suitable conditions, their relative contributions to cycling decrease according to the orderof SOEF-N, IEF-N, SAEF-N and WAEF-N. In differen grain size sediments, the absolute contents of different transferable forms of nitrogen are the highest in fine sediments and the lowest in coarse sediments. If the proportions of each grain in sediments are the same, the contents of transferable nitrogen in fine sediments can amount to 60% of the total transferable nitrogen, which is twold times of that in medium size sediments and almost seven times of that in coarse sediments. Namely that, fine sediment has the highest potential contribution to nitrogen cycling. In addition, the relative contents of organic transferable nitrogen increase with grain size finer, while those of inorganic nitrogen decrease.

Topic Category 基礎與應用科學 > 海洋科學