郑州市贾鲁河流域水循环模拟

Simulation of Hydrological Cycle in the Jialu River Basin of Zhengzhou

以郑州市贾鲁河流域为研究区,在地理信息系统技术支持下,使用DEM、土地利用、土壤、气象、人工取用水数据、农业管理措施等资料构建了基于分布式水文模型SWAT的流域水循环模拟模型,应用改进的SWAT模型进行了流域水循环模拟,并利用实测数据对模型进行了参数率定和模型验证,采用相对误差、NASH效率系数、相关系数作为模型适应性评价指标,结果表明模型在研究区有较好的适应性。可以为流域水循环演变规律的系统揭示和区域水资源的综合调控提供了技术支撑。

A hydrological cycle model was constructed in the Jialu River Basin of Zhengzhou on the basis of the distributed hydrological model-SWAT.The model used the information of DEM,land use,soil,weather,artificial water use data,and agricultural management measures under the technical support of the geographic information system.The hydrological cycle was simulated using the improved SWAT model,and the model parameters were calibrated and the model was validated using the measured data.The relative error,NASH efficiency coefficient,and correlation coefficients were used as the indexes to evaluate the model applicability.The results showed that the model is applicable in the study area,which can provide the technical support to illustrate the evolution rule of the hydrological cycle and the comprehensive control of regional water resources in the Jialu River Basin.