中文摘要：

采用REOF、合成分析等方法,研究了1960~2005（共46年）我国南方地区冬季（1月）地面最低气温的时空特征,并探讨了经过REOF分区后各区域影响最低气温的主要因子。结果表明：根据最低气温REOF分区可把我国南方地区最低气温划分为A,B,C三个区域：A区主要包括广西、湖南、贵州;B区主要包括海南、广东、福建和浙江;C区主要包括湖北、河南和安徽。影响这三个分区最低气温的因子各有不同,A区主要是受来自青藏高原东部及其周边的热源影响,B区主要是受西太副高和西南气流的影响,影响C区的则主要是来自北方的冷空气。

英文摘要：

Based on REOF and synthetic analysis methods, this paper analyzed the inter - annual change and space distri- bution character of minimum temperature in the southern China and its possible reasons in 1960 - 2005 （46 years） in January. The results are shown as follows： （1） The minimum temperature in the southern China can be divided into three regions, re- spectively, district A, B and C. District A mainly includes the provinces of Guangxi, Guizhou and Hunan, district B mainly includes the provinces of Hainan, Guangdong, Fujian and Zhejiang, district C mainly includes the provinces of Hubei, Henan and Anhui. The main influencing factors of these regions are different each other. The district A is mainly influenced by the warm flow from the east of the Tibetan Plateau and its surrounding areas. The district B is mainly influenced by the west Pacific subtropical high and the south -west flow. While the district C is mainly affected by the northern cold air.