水资源与水工程学报2025，Vol.36Issue(5)：18-28,11.DOI:10.11705/j.issn.1672-643X.2025.05.03
基于SWAT的泾河流域气象-水文干旱传播特征研究
Propagation characteristics of meteorological to hydrological drought in the Jinghe River Basin based on SWAT
摘要
Abstract
Both of the terrestrial water cycle and catchment characteristics can influence the propagation of meteorological to hydrological drought,and analyzing the propagation characteristics is crucial for the early warning and management of drought.In this work,the SWAT model was used to simulate the hydrological cycle in the Jinghe River Basin.Run theory,paired analysis,and correlation analysis were combined to reveal the spatial evolution patterns and driving factors of drought propagation across multiple time scales.Results show that drought propagation exhibits significant temporal dependence.As time scales increase,propagation time and propagation rate increase,while the propagation degree of duration and severity decrease.Spatially,there is a distinct upstream-downstream difference.The sensitivity of drought propagation in downstream areas is relatively low,but once the propagation starts,the response is faster,the duration is longer,and the severity is higher.Drought propagation at the monthly and seasonal scales are mainly driven by hydrological variables such as precipitation,actual evapotranspiration,soil water content,and lateral recharge.Catchment characteristics such as agricultural land,grassland,and slope of 0-15° or greater than 25° also play an important role in drought propagation.But at the annual scale,drought propagation is less affected by these factors.关键词
多时间尺度/干旱传播/气象干旱/水文干旱/水循环/空间演变/SWAT模型/泾河流域Key words
multiple time scales/drought propagation/meteorological drought/hydrological drought/water cycle/spatial evolution/SWAT model/the Jinghe River Basin分类
天文与地球科学引用本文复制引用
田向哲,晏婷,降亚楠,相里江峰,黄喜峰,李勇民,侯守敬..基于SWAT的泾河流域气象-水文干旱传播特征研究[J].水资源与水工程学报,2025,36(5):18-28,11.基金项目
陕西省水利科技计划项目(2024slkj-10) （2024slkj-10）
国家自然科学基金项目(52579045) （52579045）
陕西省重点研发计划项目(2024SF-YBXM-533) （2024SF-YBXM-533）
