1960—2013年北京旱涝变化特征及其影响因素分析

李双双^a,^b, 杨赛霓^a,^b*,^*, 刘宪锋^a,^c

The Characteristics of Drought-Flood Variation and Its Influence Factors in Beijing during 1960-2013

LI Shuang-shuang^a,^b, YANG Sai-ni^a,^b, LIU Xian-feng^a,^c

1960—2013年北京夏季旱涝及其影响因素趋势变化

Variation trends of SPI and its influence factors in Beijing during 1960-2013