北方河流健康问题诊断与保护对策探讨OA

River health issues are crucial to urban survival and constrain development.In the northern plains of China,most rivers serve flood control or irrigation purposes,with uneven intra-annual runoff distribution.Taking the Laozhang River as a case study,health assessment results indicated it was a"healthy"river,yet it scored low on indicators such as water quality and self-purification capacity.As a drainage channel,both its hydrological and natural ecological functions required improvement.The primary health pressures stemmed from poor water quality and low aquatic biodiversity.Through investigation,the root causes of the Laozhang River's health problems were identified,and protection strategies were proposed,including pollutant discharge control,pollution prevention,augmentation with high-quality water sources,and improvement of management mechanisms.