In order to investigate the climate change in the Mahai Basin of the Qinghai-Tibet Plateau under the conditions of global warming,the variations of annual precipitation and temperature data in the Mahai Basin were analyzed using the accumulative anomaly method,Mann-Kendall test,and wavelet analysis.The results suggested that(1)annual precipitation is stable from1970 to 2010while annual temperature has an increasing trend;(2)annual precipitation has a decreasing trend before 2001 and increases after that,whi...