民勤沙井子地区降水特征及干旱周期分析

ANALYSIS ON PRECIPITATION CHARACTERISTICS AND DROUGHT PERIOD OF SHAJINGZI REGION IN MINQIN COUNTY

利用民勤治沙综合试验站３４年（１９６１～１９９４年）降水的观测资料，对沙井子降水量、降水日数及其季节分配、降水强度、降水变率及降水保证率进行了统计分析，并采用降水变率和湿润指数（ＭＩ）。

Based on the meteorological data during 1961-1994 observed at Minqin Desert Control Experimental Station, Statistical analysis on the amount, days, seasonal distribution, intensity, variability and assurance of precipitation in Shajinqzi region was conducted. Futhermore, by means of precipitation variability and moisture index( MI ), the drought period in this region was determined with Maximum Entropy Method (MEM).