全国水循环通量解析及其演进研究

Analysis and evolution study to national water cycle flux

通过对流域水循环通量的全方位解析,摸清水资源家底,是落实水资源作为最大刚性约束的重要基础和前提。针对全国尺度的超大时空范围、复杂地貌类型、多气候类型等特点,创新研发了流域出口断面自动识别、多阈值虚拟河网融合等技术,强化高海拔区域垂向过程模拟,构建了全国分布式水循环模型WEP-CN,绘制了水循环两向水流图,对全国"自然-社会"二元水循环过程进行了多尺度分析和多元化呈现,同时基于对全国粮食和能源虚拟水的研究,实现了全国水循环实体水和虚拟水通量的解析,为全国、流域及区域等不同层面的水资源承载力评价和水资源战略配置提供基础信息,支撑水资源可持续利用。

Through the overall analysis to basin water cycle flux,finding out water resources condition is important foundation and premise to implement that regard water resources as the biggest rigid constraint.Aim at national super coverage,complicate geomorphic type and multi-climate type,this article researched and developed new technology including basin export section automatic identification,multi-threshold value virtual river net combination,intensified vertical process simulation in high altitude localities,built national distributed water cycle model WEP-CN,drew water cycle two-way flow picture,did multi-scale analysis and diverse exhibition to national“nature-society”binary water cycle process.Meanwhile,this research realized national water cycle analysis to tangible and fictitious water flux based on national grain and energy fictitious water study and provide fundamental information for different level's water resources carrying capacity evaluation and strategic allocation including nation,basin and region,which can support water resources sustainable utilization.