中文摘要：

针对我国高寒区水文模型研制中基础数据缺乏、现有数据时空分辨率不高、蒸散发和积雪融雪难于定量计算等问题，联合应用降水量、流量、气象、DEM、NDVI、土地覆盖等多源数据，汲取Shuttleworth-Wallace模型双源蒸散发计算优势以及Sacramento模型产流计算思想，通过搭建蒸散发模块、积雪融雪模块、产流模块和汇流模块，兼顾蓄满机制和下渗过程，构建了基于栅格的分布式水文模型。实例应用结果表明，基于栅格的分布式水文模型在模拟欧根河流域日流量时确定性系数较高，为高寒区的水文模拟提供了一种新的流域水文模型。

英文摘要：

There exist several problems in the development of hydrological models for high-cold regions in China, such as data deficiency, low spatiotemporal resolution of existing data, and difficulty in quantitative description of evapotranspiration and snowmelt. This study developed a distributed hydrological model based on grid by using DEM, NDVI, land cover data and daily precipitation, flow discharge, meteorological data. This model adopts a double-source evapotranspiration of Shuttleworth-Wallace model advantageous in calculations and a runoff calculation method on the pervious area of Sacramento model, and integrates the coupling of evapotranspiration-module, snow cover/melt-module, runoff module and convergence module. The results show that it achieves a relatively high Nash-Sutcliffe efficiency in the simulation of daily runoff process for the Ogen River basin and it would provide a new approach to hydrological modeling of high-cold region.