Grain-size Related Nitrogen Distribution in Southern Yellow Sea Surface Sediments


呂曉霞(Xiao-Xia Lü);宋金明((Jin-Ming Song);袁華茂(Hua-Mao Yuan);李學剛(Xue-Gang Li);詹天榮((Tian-Rong Zhan);李寧(Ning Li);高學魯(Xue-Lu Gao);石學法((Xue-Fa Shi)

Key Words

grain size ; surface sediment ; the southern Yellow Sea ; nitrogen ; form


Chinese Journal of Oceanology and Limnology

Volume or Term/Year and Month of Publication

23卷3期(2005 / 08 / 01)

Page #

306 - 316

Content Language


English Abstract

Forty-eight surface sediments of the southern Yellow Sea are separated into three grain-size fractions. Four forms of extractable nitrogen (nitrogen in ion-exchangeable form (N(subscript ie)), nitrogen in weak-acid extractable form (N(subscript wa)), nitrogen in strong-alkali extractable form (N(subscript sa)) and nitrogen in strong-oxidant form (N(subscript so)) are obtained by the sequential extraction. The results show that the contents and the distributions of the extractable nitrogen in the southern Yellow Sea surface sediments are closely related to sediment grain size. The distributions of N(subscript ie), N(subscript so) and total nitrogen (TN) present positive correlations with fine particles content, while N(subscript wa) and N(subscript sa) does not have such correlation. The net contents of all the forms of nitrogen increase with sediment grain size finer.

Topic Category 基礎與應用科學 > 海洋科學