In order to explore the key factors of algal blooms in Beijiang River under the action of cascade hydropower stations,the monitoring data of water quality during non algal blooms and algal blooms in Beijiang River were collected,and the relationship between algal blooms and impact factors in Beijiang River was analyzed through correlation and RD A.The results showed that the water temperature,pH,dissolved oxygen,permanganate index and total phosphorus were positively correlated with the impact factors of algal blooms in Beijiang River,while the total nitrogen,ammonia nitrogen,flow rate and flow volume were negatively correlated with the impact factors.Under the condition that nutrients were sufficient,the temperature of water in autumn rose,water flow was slow and water stratification was obvious under the action of cascade hydropower stations,which led to Microcystis flos-aquae with suspension ability in a favorable physical and chemical environment,becoming an absolute dominant species,and gathering in large numbers to produce cyanobacteria bloom.
维普
万方数据
