Title: The correlation analysis between precipitation and other meteorological factors in water resource conservation forests of Qilian Mountains
Abstract: Based ground meteorological observation for 18 years in Dayekou basin of Qilian Mountains,the parameters algorithm of observed data,correlation analysis,regression analysis and unbiased estimate analysis were used to study the characteristics between precipitation and other meteorological factors on interannual variations and inter-monthly variation.The results show that the 18 years average value of precipitation,air temperature,relative humidity,air pressure,wind speed,sunshine time,evaporation from water surface was 374.06 mm,1.62℃,respectively,60.91%,745.27 hPa,2.52m/s,1 633.14 h,995.64 mm,respectively,in Dayekou basin of Qilian Mountains,and the interannual variation of these indexes decreased with the order of temperature,precipitation,sunshine time,surface evaporation,wind speed,relative humidity and air pressure.The correlation of precipitation and meteorological factors from strong to weak wastemperature,water surface evaporation,sunshine time,wind speed,relative humidity,air pressure.Temperature and surface evaporation could well explain the precipitation change,which were in strong correlation with precipitation.Interannual variation of air pressure was not obviously,which showed weak correlation with precipitation.Comprehensive analysis results of R2 test,Ftest and t test showed that the regression model of precipitation index and meteorological factors was credible in the 95% confidence interval in all months except October.The timescale of the study on functional relationship of precipitation and meteorological factors were interannual variations and inter-monthly variation.
Publication Year: 2014
Publication Date: 2014-01-01
Language: en
Type: article
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