青海湖水系生态需水量分析

Analysis of ecological water demand of Qinghai Lake system

为了研究青海湖水系流量变化对生态的影响,遵循河湖自然规律,科学确定青海湖水系3条主要河流生态需水量。文章采用水文学中计算生态基流的4种方法,分别计算出布哈河、沙柳河的全年生态基流为1.58m^(3)/s、0.16m^(3)/s;泉吉站汛期5-9月生态基流量为0.19m^(3)/s。每年5-9月是河道典型鱼类裸鲤洄游产卵重要时期,生态需水完全取决于来水量,计算出生态基流才能保证生态需水量,是保障青海湖流域湿地生态系统稳定和安全的重要措施。

In order to study the ecological impact of the flow change of Qinghai Lake system,and follow the natural law of rivers and lakes,the ecological water demand of three major rivers in Qinghai Lake system was scientifically determined.In this paper,four methods for calculating ecological base flow in hydrology were used to calculate the annual ecological base flow of 1.58mIn order to study the ecological impact of the flow change of Qinghai Lake system,and follow the natural law of rivers and lakes,the ecological water demand of three major rivers in Qinghai Lake system was scientifically determined.In this paper,four methods for calculating ecological base flow in hydrology were used to calculate the annual ecological base flow of 1.58m'/s and 0.16m^(3)/s of the Bucha River and Shaliu River,respectively.The ecological base flow of Quanji Station in May to September was 0.19m^(3)/s.May to September every year is an important period for the migration and spawning of typical fish Gymnocypris przewalski in the river,and the ecological water demand depends entirely on the amount of water,and calculating the ecological base flow can ensure the ecological water demand,which is an important measure to ensure the stability and safety of the wetland ecosystem in the Qinghai Lake Basin./s and 0.16m^(3)/s of the Bucha River and Shaliu River,respectively.The ecological base flow of Quanji Station in May to September was 0.19m^(3)/s.May to September every year is an important period for the migration and spawning of typical fish Gymnocypris przewalski in the river,and the ecological water demand depends entirely on the amount of water,and calculating the ecological base flow can ensure the ecological water demand,which is an important measure to ensure the stability and safety of the wetland ecosystem in the Qinghai Lake Basin.