摘要
氮是影响湖泊富营养化的关键元素之一。湖泊沉积物既可充当湖泊水体氮营养盐的汇也可转变为源,本文综述了温度、DO、pH、水力扰动、水生生物、底牺动物等对沉积物—水界面氮交换过程的影响与作用。很多研究揭示:温度、DO、水力扰动等环境因子对氮的释放影响更加重要。目前有关沉积物氮释放的研究多集中在理化因素方面,有必要从生态角度对沉积物中氮的释放规律进行深入的研究。
It is generally considered that nitrogen （N） is one of the major factors in lake eutrophication. Lake sediments act as not only lake＇s sink but also lake＇s source of nitrogen. The effects of environmental factors are discussed including temperature, DO, pH, hydraulic dynamic torsion, aquatic organisms, macrofauna in sediment on nitrogen exchange across the sediment-water interface. Many studies have showed that some environmental factors such as temperature, DO, hydraulic dynamic torsion, exert major influences on nitrogen release. Recent release studies of sediments nitrogen mainly focus on the effects of various physical and chemical factors on the nitrogen release in the sediments, and it is necessary to make further research on the effect of ecological factors of nitrogen release from the sediments in shallow lakes.
出处
《山东建筑大学学报》
2010年第1期58-61,共4页
Journal of Shandong Jianzhu University
基金
国家"十一五"科技支撑计划项目(2006BAC10B03)
山东省环保局重点科技项目(2006043)
关键词
浅水湖泊
沉积物
内源氮释放
环境因子
shallow lake
sediments
internal nitrogen release
environmental factors
