MODEL OF NITRIFICATION AND DENITRIFICATION IN MARINE-SEDIMENTS

被引：28

作者：

BLACKBURN, TH

BLACKBURN, ND

机构：

[1] Department of Microbial Ecology, Institute of Biological Sciences, University of Aarhus, Aarhus

来源：

FEMS MICROBIOLOGY LETTERS | 1992年 / 100卷 / 1-3期

基金：

美国国家科学基金会;

关键词：

NITRIFICATION; DENITRIFICATION; MODEL; COMPUTER SIMULATION; MARINE SEDIMENT; EUTROPHICATION; ORGANIC LOADING;

D O I：

10.1016/0378-1097(92)90255-M

中图分类号：

Q93 [微生物学];

学科分类号：

071005 ; 100705 ;

摘要：

Processes involved in the C, N, S, and O cycles in a marine sediment were simulated for a situation where most organic degradation occurred in the top 2 mm and NO3- was not present in the overlying water. The effect of increasing organic loading was examined (degradation of C approximately 7 to 107 mmol m-2 d-1). Increasing organic loading had the following results: (1) approximately 50% of the dissolved organic nitrogen was lost by diffusion in all treatments; (2) the proportion of NH4+ flux increased, the proportion of nitrification increased slightly and then decreased; and (3) the proportion of NO3- denitrified increased at the expense of NO3- efflux.

引用

页码：517 / 521

页数：5