摘要
以可交换态氮(EN)为主的负荷是湖泊水质的决定参数之一。以里下河地区受到不同人类活动方式影响的九龙口、大纵湖、蜈蚣湖和得胜湖4个浅水湖泊为研究对象,通过现场调查采样与实验测试方法,分析其沉积物-水界面中总氮(TN)和EN的分布特征。结果表明,EN的分布受人类活动方式影响明显;沉积物中的生物和微生物活动频繁,上覆水、间隙水和沉积物中的EN含量较低。另外,沉积物-水界面处的氧化还原条件对表层沉积物中EN的分布也有影响。
The Nitrogen load, which is mainly composed of exchangeable nitrogen, is one of the determinants of lake water quality. Four shallow lakes of Jiulong Kou, Dazong Lake, Wugong Lake and Desheng Lake, which are affected by different human activities in Lixiahe area, are selected as study objects, the distribution characteristics of total nitrogen and exchangeable nitrogen in sediment-water interface are analyzed by field investigation and experiment. The results show that, (a) the distribution of exchangeable nitrogen is significantly affected by human activities; and (b) as the biological and microbial activities in sediments are frequent, the content of exchangeable nitrogen in overlying water, interstitial water and sediments are low. In addition, the redox conditions at sediment-water interface also influence the distribution of exchangeable nitrogen in surface sediments
出处
《水力发电》
北大核心
2017年第5期5-9,共5页
Water Power
基金
国家自然科学基金资助项目(41301531
41471021)
关键词
赋存特征
可交换态氮(EN)
沉积物-水界面
浅水湖
occurrence chracteristic
exchangeable mitrogen
interface of sediment and water
shallow lake