三峡等上游水库水量调度对荆江三口分流的影响

受人类活动、地形自然演变等因素影响,荆江三口分流持续减少,给洞庭湖区水资源利用、水生态环境保护等带来不利影响。三峡等上游水库投入运行后,改变了长江中下游的径流过程,通过数学模型计算,分析丰、平、枯典型来水条件下三峡等上游水库水量调度对荆江三口分流的影响,揭示荆江三口分流与上游水库调度之间的相关关系,可为洞庭湖区治理提供技术支持。

Influence of upstream reservoirs regulation on flow diversion of three distributaries along Jingjiang River

Due to the influence of human activities and natural evolution, the diversion in three distributaries along Jingjiang River has continuously reduced, which has brought adverse effects to the utilization of water resources and the protection of water ecological environment in Dongting Lake region. After the operation of Three Gorges Reservoir and other upstream reservoirs, the runoff process in middle and lower reaches of the Yangtze River has changed. Through mathematical model calculation, this paper analyzes the influence of water flow regulation of upstream reservoirs, such as Three Gorges Reservoir, on the diversion of the three distributaries along Jingjiang River, and reveals the correlation between the diversion of the distributaries and the upstream reservoirs operation. The research results can provide technical support for the governance of Dongting Lake region.