Using Shangluo climate observation stations from 1961 to 2013 on the daily temperature data,de-fined for Shangluo four seasons division method,analyzed nearly 53 years in Shangluo the change time of four seasons,the length of the season,the average temperature,average maximum temperature,minimum tem-perature,and gave the correlation analysis of the temperature of the four seasons and season time,season length. The results showed that in 53 years,Shangluo spring ahead of time,summer time slightly delayed;spring length significantly increased,the other three seasons slightly reduced;in spring,autumn and winter average temperature increased,decreased in summer,autumn and spring average maximum temperature in-creased;the average minimum temperature in spring decreased;spring into the season time and average tem-perature and the average minimum temperature are positively related;the summer into the season time and average temperature,maximum temperature are negative correlation,fall into the season time and average temperature and minimum temperature are negative correlation;the length of the winter and average tempera-ture are positively related,summer season and the highest temperature are positive correlation.%利用商洛气候观测站1961-2013年逐日气温观测资料,定义适用商洛的四季划分方法,分析了近53a来商洛四季开始时间、季节长度、平均气温、平均最高气温、最低气温的变化,并给出了四季气温与入季时间、季节长度的相关性分析.结果表明:近53a商洛入春时间提早,入夏时间略推迟;春季长度明显增加,其他3个季节略微减少;春季、秋季和冬季平均气温增高,夏季下降;秋季和春季平均最高气温增高;春季平均最低气温下降;春季入季时间与平均气温和平均最低气温成正相关,夏季入季时间与平均气温、最高气温成负相关,秋季入季时间与平均气温和最低气温成负相关;冬季长度与平均气温成正相关,夏季长度与最高气温成正相关.
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