海河流域二元水循环模型开发及其应用——Ⅰ.模型开发与验证

Development and application of dualistic water cycle model in Haihe River Basin:Ⅰ.Model development and validation

针对高强度人类活动作用下海河流域水循环的"自然-人工"二元特性,开发了流域二元水循环模型(简称"二元模型")。二元模型由分布式流域水循环模型(WEP)、水资源合理配置模型(ROWAS)和多目标决策分析模型(DAMOS)3个模型耦合而成。针对各模型的优势与不足,提出了两层耦合的技术路线,以实现统筹考虑水资源、宏观经济与生态环境的流域水资源综合管理分析的功能。WEP、ROWAS和DAMOS分别采用11752个、125个和8个计算单元对海河流域进行划分,在获取各类输入参数后,应用二元模型对海河流域进行了分析计算与模型验证。结果表明,所建立的二元模型对径流过程、入海水量以及地下水流场等均具有合理的模拟精度,模型得到验证,可望用作海河流域水资源规划与管理的情景分析工具。

A dualistic hydrological cycle model （abbreviated as dualistic model） is developed orienting the naturalartificial dualistic characteristic of hydrological cycle in the Haihe River Basin （HRB） under the strong impacts of human activities, which consists of the distributed watershed hydrological model （WEP） , the water resources rational allocation model （ROWA） and the multi-objective decision model （DAMOS）. A two-layered coupling technique is adopted to realize the function for integrated water resources management analysis. The HRB is respectively partitioned into 11 752, 125 and 8 application units for the execution of WEP, ROWA, and DAMOS. The dualistic model is calibrated and validated using the observations from the HRB. The result shows that the simulated evapotranspiration, river flow, flow discharge into the sea, and groundwater flow filed compare well to the observations, which demonstrates the potential of using the dualistic model for scenario analysis of water resources planning and management in the HRB.