Introducing HyPeak: An international network on hydropeaking research,practice, and policy

An increase in the demand for renewable energy is driving hydropower development and its integration with variable renewable energy sources. When hydropower is produced flexibly from hydropower plants, it causes rapid and frequent artificial flow fluctuations in rivers, a phenomenon known as hydropeaking. Hydropeaking and associated hydrological alterations cause multiple impacts on riverine habitats with cascading effects on ecosystem functioning and structure. Given the significance of its ecological and socio-economic implications, mitigation of hydropeaking requires an inter- and transdisciplinary approach. An interdisciplinary network called HyPeak has been conceived to enrich international research initiatives and support hydropower planning and policy. HyPeak has been founded based on exchange and networking activities linking scientists from several countries where hydropeaking has been widespread for decades and numerous studies dedicated to the topic have been carried out. HyPeak aims to integrate members from other countries and continents in which hydropower production plays a relevant role, and grow to be a reference group that provides expert advice on the topic to policy-makers, as well as researchers, stakeholders, and practitioners in the field of hydropeaking.     

桐乡市河湖管护体制机制的创新

梳理桐乡市河湖管护现状,以问题与需求为导向,探索与破解河湖管护难题,提出了交界区域联动机制、"四位一体"长效保洁机制、"河长制"细化升级、水利管理应用平台建设等一系列创新思想,以期提升桐乡市河湖管护水平,同时也为全国平原河网地区河湖管理提供一定的参考借鉴。     

海河干流健康评估体系研究

针对海河穿过天津中心城区、原有入境水量大幅减少的特点,以水利部河流健康评估技术导则为基础,调整了5个准则层的部分评估指标及赋分权重,构建了一套海河干流健康评估体系,并依此评估出海河干流2013年的健康指数得分为47.9分,为"亚健康状态",比直接按水利部标准评出的结论"不健康状态"提高了一个等级。     

基于RVA阈值区间集成的河道内生态需水计算与应用

在对河道生态需水特点进行分析和总结的基础上,提出了基于变化范围法和多种水文学法计算成果的河道内生态需水计算方法——下包线法,建立了考虑径流资料精度的评价体系。结合一致性审查、河道内生态需水计算和评价,构建了考虑径流非一致性的河道内生态需水计算框架,并应用于陕西省引汉济渭工程。结果表明:河道内生态需水过程具有波动性、季节性、时效性和区间性;在生态需水阈值区间内,下包线法同时满足维护河道生态和保证兴利效益的目的,可在较高生态需水标准基础上进一步压缩生态需水总量;下包线法和Tennant法中Tennant-好、Tennant-差所得生态需水过程分别为引汉济渭工程理想、适宜和最低生态需水过程。