干旱区资源与环境2026，Vol.40Issue(3)：105-115,11.DOI:10.13448/j.cnki.jalre.2026.047
重庆市骤发干旱向水文干旱的传播特征
Propagation characteristics from flash drought to hydrological drought in Chongqing
摘要
Abstract
Monitoring and assessing flash droughts can significantly enhance the forecast accuracy and timeliness of hydrological droughts,providing a theoretical foundation for improved water resource management.To investigate the propagation characteristics from flash drought to hydrological drought,this study employs the pentad-scale(5-day)Standardized Precipitation Evapotranspiration Index(SPEI)and Standardized Runoff Index(SRI)to comparatively analyze the propagation features and distinctions between meteorological drought/flash drought and hydrological drought.The synergistic effects of intensity-duration during propagation are further explored.Key findings include:1)Flash drought frequency,intensity,and duration exhibit a slight increasing trend,with significant growth in western Chongqing.2)Spatially,high-incidence zones form a belt along the Yangtze River,where flash drought intensity and duration in hilly areas exceed those in mountainous regions.3)Drought propagation occurs within 1-2 months,with the intensity of flash drought propagating to hydrological drought surpassing that of meteorological drought."Low-frequency yet high-intensity"response zones exist in western and northeastern Chongqing 4)The propagation rate reaches 100％in northeastern mountainous areas,while intensity transfer shows nonlinear decay(mild flash droughts trigger moderate hydrological droughts with higher probability than moderate/severe events),revealing a specific intensity threshold that enhances propagation efficiency.关键词
骤发干旱/水文干旱/干旱传播Key words
flash drought/hydrological drought/drought propagation分类
天文与地球科学引用本文复制引用
田云涛,李杰,武强,陆聪,周燕秋,李佳..重庆市骤发干旱向水文干旱的传播特征[J].干旱区资源与环境,2026,40(3):105-115,11.基金项目
重庆市自然科学基金面上项目(CSTB2023NSCQ-MSX0904) （CSTB2023NSCQ-MSX0904）
重庆市卫星遥感数字化应用创新重点实验室开放研究课题(LRSAI-2025010) （LRSAI-2025010）
重庆市气象部门青年基金项目(QNJJ-202404)资助. （QNJJ-202404）
