基于SPEI的粤西近50 a干旱特征分析
李家良1(
), 彭丽英2(), 刘祖任1, 余绍荣1, 梁家杰3
), 彭丽英2(), 刘祖任1, 余绍荣1, 梁家杰3
Drought characteristics in western Guangdong over the past 50 years based on SPEI
LI Jialiang1(), PENG Liying2(), LIU Zuren1, YU Shaorong1, LIANG Jiajie3
), PENG Liying2(), LIU Zuren1, YU Shaorong1, LIANG Jiajie3
图4. 1973—2022年春季（a）、秋季（b）粤西SPEI和重要环流指数5 a滑动平均值年际变化
Fig.4. The inter-annual variations of the 5-year moving average values of SPEI and key circulation indices in western Guangdong in spring （a） and autumn （b） during 1973-2022
