强降雨对密云水库水质及其藻类群落结构的影响
Effects of heavy rainfall on water quality and algae community structure in Miyun Reservoir
李亚楠 1李心月 1康莹 2潘杰 1张新 1刘冬跃1
作者信息
- 1. 北京市密云水库管理处 北京 101512
- 2. 北京市官厅水库管理处 张家口 075441
- 折叠
摘要
为探究强降雨事件对密云水库水质和藻类的影响,以"23·7"密云水库暴雨为例,分析了上游、库区及雨水监测数据,并与历史数据比对.结果表明:降雨以中部层间流方式进入库区,导致透明度下降、水温、浊度升高、电导率和pH值下降.总磷浓度升高,总氮浓度短暂波动后恢复.藻细胞密度整体增高,优势种发生变化.针杆藻和锥囊藻对氮元素吸收作用强,是总氮浓度下降的原因之一.深入探讨了密云水库中强降雨事件引发的水质和藻类生态系统变化,为应对这些挑战制定有效管理策略提供了关键见解.
Abstract
In order to explore the impact of heavy rainfall events on water quality and algae in Miyun Reservoir,taking heavy rainfall in Miyun Reservoir on"23·7"as an example,the upstream,reservoir and rainwater monitoring data were analyzed and compared with historical data.The results show that the rainfall enters the reservoir through the middle interlayer flow,which leads to the decrease of trans-parency,the increase of turbidity of water temperature,the decrease of conductivity and pH value.The concentration of total phosphorus increased,and the concentration of total nitrogen recovered after a short fluctuation.The density of algal cells increased and the dominant species changed.The strong ab-sorption of nitrogen by spicularia and conocystis may be one of the reasons for the decrease of total nitro-gen concentration.The paper explores in depth the changes in water quality and algal ecosystems trig-gered by heavy rainfall events in Miyun Reservoir,providing key insights for developing effective man-agement strategies to address these challenges.
关键词
强降雨/密云水库/水质/藻类Key words
heavy rainfall/Miyun Reservoir/water quality/algae引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据