摘要
利用青藏高原1961—2010年逐日气温气候统计资料,采用了线性回归方程、曼—肯德尔突变检验等方法,研究了青藏高原气温气候时间和空间尺度上的变化趋势,研究表明:(1)青藏高原年平均气温以0.022 8℃/a的速率递增,在1993年之后年平均气温值较高,在南部区域年平均气温较高,而在中部区域年平均气温较低,且1996年为青藏高原年平均气温开始突变的年份;(2)青藏高原年平均气温存在显著的季节变化特征,且4个季节下的年平均气温均呈递增的变化趋势,其中春季增温幅度最大,冬季增温幅度最小;(3)通过对青藏高原年平均气温EOF分解分析得出,年平均气温呈南—中—北型。
We use daily temperature climate statistics of the Tibetan Plateau from 1961 to 2010,and used the linear regression equation,Mann-Kendall mutation testing and other methods to study the spatiotemporal trend of the temperature and climate of the plateau.The results show that:(1)the increase rate of the average annual temperature of the plateau is 0.022 8℃,after 1993,annual average temperature value was high,and average temperatures in the southern region was higher,while the annual average temperature was low in the central region,and abrupt change of temperature in Tibetan Plateau occurred in 1996;(2)the average annual temperature presented the significant seasonal variation,and the average annual temperature trend under four seasons was incremental,warming was the biggest in the spring,and the warming was slight in winter;(3)it was concluded that the average annual presented the distribution characteristics of types of South-Center-North and South-North based on EOF analysis on the average annual temperature.
出处
《水土保持研究》
CSCD
北大核心
2017年第6期262-266,272,共6页
Research of Soil and Water Conservation
