摘要
分布式水文模型及其尺度问题是当今水文学研究的前沿课题 ,特别是针对不同流域尺度以及适合于干旱地区的分布式模型更是研究的焦点。提出了位于干旱区中小流域尺度的三工河流域分布式模型建立的方法 ,采用了半分布式网格与子流域结合的模拟计算方式 ,实例证明这种模型非常适合于模拟干旱区融雪径流 ,对干旱区流域产汇流过程的研究将具有很大的推动作用。
The study of distributed hydrological model and hydrological scale is a focus on hydrology now, especially to different drainage basin scale and arid land. The distributed model based on GIS and remote sensing can simulate flow of any area in a watershed. It is an effective approach for reflecting spatially varied complexities in watershed systems. In this paper, a distributive hydrological model was developed to simulate runoff in a arid climate, sparse vegetation. The model was then applied to a case study in the Sangong River Basin, which is one of the most representative catchments in the Xinjiang Provence. Based on the RS and GIS technique, the DEM and Land Cover of the study basin was successfully used to delineate the stream network, subbasin and extract information of catchment characteristics. The results show satisfactory accuracy for runoff simulation. Especially, the integrated hydrological models can be used for simulating both runoff and thaw , which provide a useful tool for water resources management of arid land area. This study is an attempt to develop a distributed rainfall runoff model for river basins in the arid land area. The developed model can also be extended to larger basins. Further works of field survey and investigation would be helpful for better calibrating critical parameters and thus improving performance of the developed model.
出处
《干旱区地理》
CSCD
北大核心
2003年第4期305-308,共4页
Arid Land Geography
基金
中国科学院知识创新工程重要方向性项目(KZCX3 -SW -3 2 7)
关键词
三工河流域
分布式水文模型
遥感
地理信息系统
distributed hydrological model
Sangong river basin
GIS and remote sensing
