摘要
水体富营养化是破坏河道自然生态平衡和影响水质使用功能的现象。工农业的迅速发展,导致各种污水排放到河流中,使水体呈富营养化状态。溶解氧是水生生物生理代谢的限制因子之一,其高低可表征水生生物生长状况和水体污染程度。在藻类丰富的水体中,溶解氧浓度因植物光合作用及水生生物呼吸作用而呈现一定周期性变化。通过典型河流监测点位溶解氧监测数据,分析富营养化河流溶解氧的昼夜变化特点。
Eutrophication of water is a phenomenon that damages the natural ecological balance of the river course and affects the use function of water.The rapid development of industry and agriculture leads to the discharge of all kinds of sewage into rivers,which makes the water in a state of eutrophication.Dissolved oxygen is one of the limiting factors of aquatic biological metabolism.Its high and low level can indicate the growth status of aquatic organisms and the degree of water pollution.In algae-rich waters,the dissolved oxygen concentration varies periodically due to photosynthesis of plants and respiration of aquatic organisms.In this paper,the diurnal variation of dissolved oxygen in eutrophic rivers was analyzed based on the data from the monitoring sites of typical rivers.
出处
《环境保护与循环经济》
2020年第10期60-62,共3页
environmental protection and circular economy
关键词
水体富营养化
溶解氧
光合作用
呼吸作用
昼夜变化
water eutrophication
dissolved oxygen
photosynthesis
respiration
diurnal variation
