黔东南州都柳江流域秋冬春连旱的物理成因分析

Analysis on Physical Factors Causing Sustained Drought from Autumn to Spring along Duliu River of Qiandongnan

通过对黔东南州都柳江流域 1998年 9月至 1999年 5月连旱过程的物理量合成分析 ,得出造成干旱的原因 ,主要是大气环流的异常变化及特殊的地形。

By analysing the physical factors causing sustained drought from Sept.1998 to May 1999 along Duliu river of Qiandongnan, the reason was known that the unnormal change of the atmosphere circulation and special landforms and features conditions caused mainly the drought.