南昌工程学院学报2025，Vol.44Issue(1)：1-7,7.
鄱阳湖流域气象干旱向水文干旱滞后传播的时空模式分析
Spatiotemporal propagation pattern of meteorological and hydrological droughts in the Poyang Lake Basin
摘要
Abstract
Studying the spatiotemporal pattern of the lagged propagation from meteorological drought to hydrological drought is significant for understanding the patterns and mechanisms of drought propagation under changing environments and for es-tablishing a hydrological drought warning system.The study of drought propagation is still in the exploratory stage,and its propagation mechanisms and driving processes remain unclear.This paper uses the standardized precipitation index and the standardized runoff index at 12-month scale,combining cross-wavelet analysis with wavelet transform energy spectrum analy-sis,to analyze the lagged propagation time of meteorological-hydrological drought in the Poyang Lake basin.The results show that the lagged propagation time of meteorological-hydrological drought in the Poyang Lake basin is about 1 to 5 months,with differences in the lagged propagation trends among the sub-basins.The lagged propagation time is extended in the Ganjiang River Basin and shortened in the Fuhe River,Raohe River,and Xiushui River basins.The differences in lagged propagation time are influenced by a combination of factors such as the monsoon climate,atmospheric circulation,and large reservoirs.关键词
气象干旱/水文干旱/干旱指数/交叉小波分析Key words
meteorological drought/hydrological drought/drought index/cross-wavelet analysis分类
大气科学引用本文复制引用
肖丽英,郭永程,唐颖滢,王萍根..鄱阳湖流域气象干旱向水文干旱滞后传播的时空模式分析[J].南昌工程学院学报,2025,44(1):1-7,7.基金项目
国家自然科学基金资助项目(52069015,52069014) （52069015,52069014）
江西省学位与研究生教育教学改革研究项目(JXYJG-2021-210) （JXYJG-2021-210）
