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《Modern Agricultural Science and Technology》 2017-23
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Analysis on the Variation of Different Level Precipitation in the Qilian Mountain Area in Winter from 1961 to 2014

DOU Qing-fang;SUO Sheng-rui;SHI Ming-zhang;LEI You-hong;Menyuan Meteorological Bureau in Qinghai Province;Meteorological Bureau of Datong County;Meteorological Bureau of Huangzhong County;Meteorological Bureau of Qilian County;  
Based on the daily precipitation data of 8 stations in Qilian Mountains from 1961 to 2014,the trend of precipitation and rainfall intensity in the winter half year of Qilian Mountains and the trend of future precipitation were analyzed by linear trend analysis and R/S method.The results showed that the precipitation days decreased with the increase of precipitation in the Qilian Mountains.The precipitation decreased from the small snow to the moderate snow,and increased from heavy snow to heavy snow blizzard,while the precipitation intensity showed an increasing trend.In Qilian Mountains in the winter half year,the total precipitation and the average precipitation intensity all showed a fluctuating trend,and the total precipitation days showed a decreasing trend.In the recent 54 years,the precipitation days and precipitation of light snow and large snowstorm in the winter half year of Qilian Mountains all showed a decreasing trend,while that in mid-snow and winter was increasing.The mean precipitation intensity of small snow showed a trend of increasing.The mean precipitation intensity of heavy snow and heavy snow showed decreasing tendency,the mean precipitation days and the large precipitation areas of light snow,moderate snow and large snowstorm in Qilian Mountains were all at Menyuan Station,and the large precipitation areas with light snowfall were in Delingha,the large value areas were in Chaka;the change tendency of the snowfall days(decrease)and the precipitation(increase)of the snowy ditch stations and the precipitation intensity(decrease)of the snowstorm were obvious.In the future,the variation of precipitation,precipitation days and precipitation intensity in the future would be the same in the future in the past six months in the Qilian Mountains,which would not change in the short term.
【CateGory Index】: P426.614
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