堵河生态需水计算及保障研究

堵河生态环境状态逐渐恶化,亟需研究确定生态需水并采取合理措施予以保障.本文在对照分析4种生态需水计算方法的基础上,考虑实际条件后,选择应用广泛的蒙大拿方法计算堵河的生态需水.计算结果表明,堵河干流的生态流量应为16.4m3/s,霍河水库需要向下游河道保证的生态流量为0.75m3/s.此外,研究确定了堵河上水利工程的调控规则,用以保障堵河生态需水流量的实现.本研究对于堵河流域水资源保护与可持续利用、南水北调中线工程水源地保护以及竹山县积极构建生态园林城市,都具有重要意义.

Research on ecological water demand calculation and security in Duhe River

Ecological environment state is deteriorated gradually in Duhe River.Ecological water demand should be studied and determined, and reasonable measures should be adopted for safeguarding.In the paper, widely-applied Montana method is selected for calculating ecological water demand of Duhe River after consideration of actual condition on the basis of controlling and analyzing four methods of calculating ecological water demand.Calculation results show that ecological flow should be 16.4m3/s in main stream of Duhe River.The guaranteed ecological flow of Huohe Reservoir to downstream rivers should be 0.75m3/s.In addition, the regulation rules of water conservancy projects on Duhe River should be studied and confirmed, thereby realizing ecological water demand flow of Duhe River.The study has important significance to water resources protection and sustainable utilization of Duhe River, water source protection of south-to-north water transfer midline project and active construction of ecological garden city in Zhushan County.