华北中部近45 a极端降水事件变化特征
张爱英, 高 霞, 任国玉
Character istic of Extreme Prec ip ita tion Even ts Change in Cen tra l North Ch ina in Recen t 45 Years
ZHANG Ai-Yang, GAO  Xia, LIN Guo-Yu
J4 . 2008, (4): 46 -50 .