水力发电2025，Vol.51Issue(11)：18-23,62,7.
杞麓湖流域气象干旱与水文干旱演变特征及相应关系
Evolution Characteristics and Corresponding Relationship of Meteorological Drought and Hydrological Drought in Qilu Lake Basin
摘要
Abstract
Based on the Standardized Precipitation Index(SPI)and Standardized Runoff Index(SRI),the temporal and spatial variation characteristics of meteorological and hydrological drought in Qilu Lake Basin from 1965 to 2022 are analyzed,and the transmission mechanism from meteorological drought to hydrological drought is discussed.The results show that:(a)from the monthly scale,the drought months of SPI are more than SRI,and the high value of SPI mostly occurred in the rainy season,while the low value of SRI concentrated in the transition period of dry season;(b)the long-term trend analysis shows that both SPI-12 and SRI-12 have shown a weak downward trend,and the drought situation increased after 2000;(c)meteorological drought is mainly short-term events,of which one month drought accounts for 59.77%,and mostly occurs in the dry season from November to December every year;(d)the hydrological drought events are mainly 2-3 months,accounting for 55.12%;and(e)there are seasonal differences in the transmission time from meteorological drought to hydrological drought,and the response time is 1 month in rainy season and 2 months in dry season.The analysis of drought transmission probability shows that the probability of general meteorological drought causing general hydrological drought is the highest,while the probability of severe meteorological drought causing severe hydrological drought is low,and 25%of meteorological drought has not spread.The results can provide a scientific basis for drought early warning and water resources management.关键词
气象干旱/水文干旱/干旱特征/干旱传播/杞麓湖流域Key words
meteorological drought/hydrological drought/drought characteristics/drought transmission/Qilu Lake Basin分类
大气科学引用本文复制引用
顾世祥,高凯,陈晶,高蓉,陈金明..杞麓湖流域气象干旱与水文干旱演变特征及相应关系[J].水力发电,2025,51(11):18-23,62,7.基金项目
国家十四五重点研发计划项目(2021YFC300205-06) （2021YFC300205-06）
国家高分辨率对地观测系统重大科技专项(89-Y50G31-9001-22/23-05) （89-Y50G31-9001-22/23-05）
云南省高层次人才及创新团队项目(2018HC024) （2018HC024）
