1960～2009年我国大陆热带亚热带交界区气温变化特征

基于我国大陆热带亚热带交界区的广东、广西、云南三省区91个国家基准基本气象站1960～2009年日气温观测数据，对气温变化趋势进行区域比较。结果表明，三省区年均温均呈上升趋势；三省区春季气温总体有微弱下降态势，但并没有通过显著性水平检验；1980年之前的三省区夏季气温以递减为趋势，1980年之后则有递增状态；1985年之前的三省区秋季气温主要以递减态势为主，1985年之后则以递增为变化趋势；三省区冬季气温1990年之前并没有明显增减态势，而1990年之后则开始呈现递增状态。趋势性区域比较上，云南最强、广东次之、广西最弱。

Temperature Change Characteristics in Boundary Regions between Tropical Area and Subtropical Area of China during 1960-2009

According to the daily temperature data from 91 national meteorological stations from 1961 to 2009, the comparative studies were made on the change progress and the characteristics of both mean annual temperature and mean seasonal temperature among Guangdong , Guangxi and Yunnan.Results showed that the mean annual temperatures in the three provinces all presented the increasing trend .The temper-atures of three provinces in spring decreased slightly and didn’t pass the significance test.The temperatures of three provinces in summer de-creased before 1980, and temperature began to rise after 1980.The temperatures of three provinces in autumn decreased before 1985, and be-gan to rise after 1985.In winter, temperature almost kept invariant before 1990.Temperature began to increase after 1990.Contrasting the three areas, we found that the temperature change of Yunnan was the most significant, then was Guangdong, and Guangxi was the third one.