Analysis on the Climatic Characteristics of the Qiangtang Nature Reserve in Tibet in Recent 30 Years

In this paper, we analyzed the changing trend of temperature, accumulated temperature and precipitation by using the meteorological data of the six stations around the Qiangtang Nature Reserve.The results show that:the average annual temperature, annual mean maximum temperature and annual mean minimum temperature in this region are rising and the rate of increasing is much great than the global or national average. ≥ 0℃ Accumulated temperature and ≥ 5℃ Accumulated temperature showed an increasing trend, the Start date brought forward and the end date delayed, duration to increase.The annual precipitation in Qiangtang is generally on the rise.The spatial pattern of the precipitation is distinct and it is decreasing from east to west.