We develop a regional hydrological model that applies to arid and semi-arid regions, by explicitly considering the effect of irrigation on the hydrological processes. A new irrigation module is here integrated into the recently introduced Atmospheric and Hydrological Modelling System (AHMS) for the quantitative assessment of basin-scale hydrological response to climate change and the impact of anthropogenic activities on water resources. The land surface, channel routing and groundwater modules of the AHMS are extended here to incorporate the new module. We then apply the model to simulating the hydrological processes in the Yellow River Basin, an arid and semi-arid region where irrigation constitutes the most important source of water use. The model is calibrated and validated using in-situ and remote sensing observations. This study demonstrates the capability of the AHMS for regional hydrological modelling in arid and semi-arid basins where irrigation profoundly influences the water balance.

我们通过明确考虑灌溉对水文过程的影响，开发了适用于干旱和半干旱地区的区域水文模型。这里将一个新的灌溉模块集成到最近推出的大气和水文建模系统 (AHMS) 中，用于定量评估流域尺度的水文对气候变化的响应以及人为活动对水资源的影响。AHMS 的地表、渠道布线和地下水模块在此扩展，以纳入新模块。然后，我们将该模型应用于模拟黄河流域的水文过程，黄河流域是一个干旱和半干旱地区，灌溉是最重要的用水来源。该模型使用现场和遥感观测进行校准和验证。