香溪河库湾氮的时空分布及影响因子分析  

The Temporal and Spatial Distribution of Nitrogen in Xiangxi Bay and the Analyze of the Impact Factor

作　　者：朱冠霖[1] 刘德富[2,3] 谢涛[1] 胡念三[1] 阮腾腾 周家飞 尹卫平[1] 

机构地区：[1]三峡大学水利环境学院,湖北宜昌443002 [2]三峡库区生态环境教育部工程研究中心,三峡大学,湖北宜昌443002 [3]湖北工业大学资源与环境学院,武汉430072

出　　处：《中国环境监测》2013年第6期73-78,共6页Environmental Monitoring in China

基　　金：国家自然科学基金面上项目(51179095、51179205);国家自然科学基金青年基金(51009080、51009081、51209123)

摘　　要：为研究解决香溪河库湾水体富营养化问题,需探明库湾水体氮的时空分布及影响因子。2010年12月—2011年11月对香溪河与水库干流交界处至香溪河库湾尾部共12个采样点进行连续监测,分析香溪河库湾氮的时空分布,结果表明,香溪河库湾氮存在明显的时空分布规律。空间上,回水末端处TN和NO-3-N浓度低,河口处浓度高,随着与回水末端距离的增加,浓度逐渐升高。在时间上,香溪河库湾TN和NO-3-N浓度的变异系数随着与河口距离的增加总体上逐渐增大,研究时间内的变化程度逐渐变大;且香溪河库湾TN和NO-3-N浓度在三峡水库不同运行阶段的时间变化规律不同。In order to research and solve the eutrophication in Xiangxi Bay, the temporal and spatial distribution of Nitrogen in Xiangxi Bay should be proved. Xiangxi Bay which contains 12 sites from the former Xiangxi River prior to the end of the Xiangxi Bay was continuously monitored during Dec, 2010 to Nov, 2011, in the same time the temporal and spatial distribution of Nitrogen in Xiangxi Bay was analyzed. The result shows that the temporal and spatial distribution of Nitrogen in Xiangxi Bay exists obviously. In the spatial, the concentration of TN and NO3^--N was low in the backwater end of the Xiangxi Bay and high in the mouth of the Xiangxi River. And the concentration of TN and NO3^--N raised with the increase of distance from the backwater end of the Xiangxi Bay. In the temporal, the coefficient of variation of the concentration of TN and NO3^--N increased totally with the increase of distance from the mouth of the Xiangxi River, the change of concentration increased gradually, and the concentration of TN and NO3^--N has different rules in different stages.

关 键 词：香溪河库湾 总氮 硝氮 时空分布 

分 类 号：X832[环境科学与工程—环境工程]