中文摘要：

根据1959-2013年珠江流域43个气象站点月平均气温数据,采用线性倾向估计、M-K突变分析和小波分析等方法分析了珠江流域平均气温的时空变化特征。结果表明：珠江流域在统计时间段的平均气温均呈上升趋势,且绝大部分区域上升显著（P〈0.05）;年平均气温序列于1993年存在显著突变,其余时间尺度突变主要发生在20世纪90年代初期;年平均气温序列主周期为3.6 a,1963-1970年期间存在2.4~3.4 a的变化周期;1983-2008年期间存在2.8~4.4 a的变化周期。流域内年平均气温范围为10.68~22.60℃,平均值为19.50℃,从西部到东部总体呈增加趋势;绝大多数气象站点在不同时间尺度内的平均气温均呈上升趋势,其中珠江三角洲地区和东江流域受城市化影响平均气温上升尤为显著。

英文摘要：

Based on the monthly average temperature data from 43 meteorological stations during 1959 to2013,the spatiotemporal variation in the Pearl River basin was analyzed using the methods of linear regression,Mann-Kendall and wavelet analysis. The results show that： the average temperature showed an increasing trend in different time scales and the average temperature in most of the areas increased significantly（ P 0. 05）. The annual average temperature series of the Pearl River basin had a mutation in1993 but the other time scales had mutations mainly in the early 1990 s. The primary period of the annual average temperature series was 3. 6a and there were 2. 4 ~ 3. 4 years and 2. 8 ~ 4. 4 years change periods in 1963-1970 and 1983-2008 respectively. The value range of the average temperature of the basin was 10. 68 ~ 22. 60℃ with the average value of 19. 50℃,which showed an increasing trend totally form the western to eastern. The average temperature of most meteorological stations of different time scales showed an increasing trend,which increased significantly in the Pearl River Delta and the Dongjiang River basin due to the influence of urbanization.