Abstract:

To explore the rules of climate change in the Qinghai Plateau Region and its impact on agricultural and animal husbandry production, based on the temperature and precipitation data of 39 meteorological stations in Qinghai and the highland barley yield observed by Menyuan Agricultural Meteorological Station from 1980 to 2022, the linear trend analysis method and Pearson correlation coefficient method were adopted, the rules of spatial and temporal distribution of air temperature and precipitation in Qinghai Region and its impact on agricultural and animal husbandry production were studied and analyzed. Research showed that the average air temperature in the whole province increased at a rate of 0.47℃/(10a) in the last 43 years. The air temperature was relatively low from the 1980s to the 1990s. In 1998, the air temperature started to increase; the spatial distribution of the air temperature was uneven, it was the highest in the east, followed by that in the southwest and northwest, and that in the central region and southeast was the lowest; and the increase of air temperature was related to altitude. The higher the altitude is, the higher the increase rate of the air temperature is, and vice versa. The precipitation had a trend of increase, the changing trend was 11.5mm·(10a)^-1, the annual fluctuation of precipitation was relatively large, and increase and decrease alternated, but there was no obvious rule; the increase rate was relatively low in the 1980s, that in the 1990s was negative, and precipitation in the 2010s increased greatly; and the precipitation was characterized by uneven spatial distribution and it decreased level by level from southeast to northwest. Besides, water and heat conditions are indispensable in agricultural and animal husbandry production. Especially in the growing season of crops, water and heat conditions complement each other and are indispensable. Climate change of increase of air temperature and humidity has more advantages than disadvantages to agricultural and animal husbandry production.

Key words: Qinghai Plateau Region, climate change, air temperature, precipitation, spatial and temporal distribution characteristics, agriculture and animal husbandry, impact, rising trend of temperature