人民黄河2026，Vol.48Issue(6)：39-43,64,6.DOI:10.3969/j.issn.1000-1379.2026.06.006
乌江流域气象干旱的三维特征分析
Three-Dimensional Characteristic Analysis of Meteorological Drought in the Wujiang River Basin
摘要
Abstract
Using the Wujiang River Basin as the study area,this study computed the monthly-scale meteorological drought index SPEI-1 from multi-year meteorological observation data.A spatio-temporal cube model was constructed to systematically characterize the evolution of mete-orological drought across three dimensions:time,space and intensity.The results reveal that:The basin exhibits a spatial"drier in the north-west and wetter in the southeast".The standardized trend scores range from-2.38 to 1.17,with the minimum P-value of the trend signifi-cance test being 0.017;Only a few areas reach a statistically significant level.Based on spatio-temporal clustering,the study area is classified into five categories.Among these,small-area types mostly exhibit characteristics of"oscillating hotspots"with significant drought fluctua-tions,while large-area types predominantly behave as"oscillating coldspots"with weaker and relatively stable drought conditions.The trend intensity values for the 12 meteorological stations range from-1.954 8 to 0.672 5,showing notable differences between stations,which underscores the significant spatiotemporal heterogeneity and periodicity of meteorological drought.关键词
气象干旱/三维特征/干旱分析/时空立方体/乌江流域Key words
meteorological drought/three-dimensional characteristics/drought analysis/spatio-temporal cube/Wujiang River Basin分类
农业科技引用本文复制引用
谢琰,王跃宇,董晓宁..乌江流域气象干旱的三维特征分析[J].人民黄河,2026,48(6):39-43,64,6.基金项目
国家自然科学基金青年项目(52409089) （52409089）
黄河水利科学研究院科技发展基金专项(黄科发202403) （黄科发202403）
