宝鸡市干旱气候特征分析

Analysis on the drought climatic characteristics in Baoji City

干旱是宝鸡市主要的气象灾害之一 ,根据宝鸡市 1 95 3年～ 1 997年 1 1个县站的干旱史料 ,统计分析得出干旱的时空分布特点是 :川原地区干旱突出 ,山区较轻 ,春夏旱严重 ,秋冬旱较轻 ;气候特征表现为 :大旱年降水偏少程度减少 60 %以上 ,气温偏高 0 .7～ 3 .5℃。最后 ,探讨了干旱气候形成的主要原因。

On the basis of the drought data in Baoji City from 1953 to 1997, drought climatic characteristics are analyzed:Drought mainly occurred in plain, it is the few in mountain , and spring and summer drought is serious ; precipitation cut down by 60% in big drought year ,temperature is high 0.7 ～3.5℃ than mean over the year . Finaly the drought causes are investigated.