Analysis of Effect of Stratified Water Withdrawal in Xiluodu Reservoir on Water Temperature in Xiangjiaba Reservoir Area
In order to investigate the influence of stratified water withdrawal in the Xiluodu reservoir on downstream water temperature in the Xiangjiaba reservoir area,historical hydrological data was used to explore the impact of the Xiangjiaba construction on river water temperature.By integrating the calibrated CE-QUAL-W2 model,this study ana-lyzed the effects of stratified water withdrawal in 2019 on the variations of water temperature in the downstream Xiangjia-ba reservoir area.The results show that the Xiangjiaba reservoir caused a 50-day delay in reaching 18℃,and the water temperature in the downstream reach of the Xiangjiaba was greatly influenced by the temperature of tributary inflows.Stratified water withdrawal in 2019 resulted in a maximum surface water temperature increase of 1.0℃ in the Xiangjiaba reservoir area during April and May.However,this influence gradually diminished along the downstream,completely disappearing in the Suijiang County.The stratified water withdrawal significantly altered the water temperature structure in the downstream Xiangjiaba reservoir area during April and May,with a noticeable increase in the outflow temperature,reaching a maximum of 0.48℃.These findings contribute to a better understanding of the effects of stratified water withdrawal and provide a scientific basis for subsequent ecological scheduling.
Xiangjiaba ReservoirCE-QUAL-W2stratified water withdrawalwater temperature
NETL
NSTL
万方数据
维普
