期刊
WATER RESEARCH
卷 35, 期 8, 页码 1897-1904出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0043-1354(00)00479-6
关键词
denitrification; sediment; littoral; profundal; N-2 flux; prediction
Denitrification is the most important mechanism of nitrogen retention in aquatic systems. Research into the spatial variability of sediment denitrification has been relatively rare. Here, we use the N-2 flux technique to measure sediment denitrification rates at 19 littoral and 1 profundal site in Lake Memphremagog. Littoral denitrification rates were highly variable with an average rate of 111 mu mol N m(-2) h(-1) Littoral denitrification rates were positively related to temperature (r(2) = 0,66. p < 0.01). % organic matter (r(2) = 0.31, p < 0.05) and macrophyte: biomass density and negatively related to depth. These results in combination with an analysis of the literature and a predictive model created from literature data relating site depth and denitrification rates show that the littoral zone dominates whole lake denitrification. (C) 2001 Elsevier Science Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据