大宁河水体营养盐状况与水华爆发之间关系分析

通过对大宁河常规监测和水华爆发期间加密监测断面的氮、磷营养盐指标统计,运用综合评价、相关性分析等方法对大宁河氮、磷营养盐分布和叶绿素a与总磷、总氮的关系进行了分析.结果显示,水华爆发期间叶绿素a与总磷、总氮呈正相关关系,总磷是大宁河水华爆发的限制因子.氮磷水平呈现从上游到入长江口逐渐递增趋势,长江回灌作用对大宁河输入部分氮、磷营养盐.

Analysis on the Relationship Between Nutrients and Water Blooms in the Daning River

In this paper,method as integrated assessment approach and correlation analysis were employed to analysis the temporal and spatial distribution characteristic of nutrients and relations between chlorophyll a and nutrients(TP&TN) using data from routine and dense monitoring activities of different sections in Daning River,the Three Gorges Reservoir Area.Results indicated that chlorophyll a had positive relations to TN and TN during the periods of water blooms outbreak and is the limitation factor.In addition...