太原市汾河景区浮游藻类细胞密度对氮磷的影响

为了研究太原汾河景区的水质状况并为其水质保护和水华暴发预警及防治提供依据,2012年6月至10月,对该区域8个采样点的浮游藻类细胞密度、氨氮、总氮和总磷及它们之间的关系进行了调查分析。结果表明,多数样点总氮超标,总磷相对稳定,均不超标,氮磷比变化较明显,多数采样点以7月份的细胞密度较高,下游端较上游端浮游藻类生长旺盛,污染情况也较为严重。多数采样点浮游藻类细胞密度与总氮和氮磷比呈负相关,与总磷呈正相关。

Effects of Phytoplankton Cell Density in Fenhe Scenic Spot of Taiyuan City on Nitrogen and Phosphorus

In order to study the status of water quality of Fenhe Scenic Spot of Taiyuan City and provide basis for water quality protection and precaution and control of algal bloom, from June to October in 2012, phytoplankton cell density, ammonia nitrogen, total nitrogen and total phosphorus from 8 sampling sites of that area as well as their relationship were investigated and analyzed. The results indicated that the content of total nitrogen exceeded the limit at most sites, but that of total phosphorus was relatively stable and compliant. The ratio of nitrogen and phosphorus was changed significantly. At most sites, phytoplankton cell density was relatively higher in July and phytoplankton grew more vigorously in downstream than in upstream. Pollution in the downstream area was much more serious. Moreover, phytoplankton cell density was negatively correlated with ratio of nitrogen and phosphorus but positively related to total phosphorus.