Climatic Characteristic in Xinjiang Shihezi Region in Recent 40 Years

Based on the average annual temperature,annual precipitation and no frost period data from Shihezi Meteorological Bureau during the period of 1967-2006,the climate trend was analyzed using linear fitting method,3-year smoothing average and M-K methods.The results show that:(1)in recent 40 years the average annual temperature increased by 0.51 ℃/10 a.and the increase rate was larger in autumn,smaller in summer and winter;(2)the annual precipitation increased also,the trend toward warm and dry in spring but warm and wet in winter;(3)the abrupt change of temperature was in the year of 1988,and 1969,1993 for precipitation;(4)the days of no frost period incresed by 4.74 d/10 a,and 19 days increased totally in recent 40 years.