近58 a河南省宝丰县气候变化分析

Analysis of Climate Change in Baofeng County in Recent 58 Years

利用宝丰站1957～2014年的温度、降水、日照资料，采用线性回归、距平、Mann －Kendall 检验等方法分析了近58 a 来宝丰县气候变化特征。结果表明，近58 a 宝丰县年平均气温呈上升趋势，春季、秋季、冬季平均温度也均呈上升趋势，夏季平均气温呈下降趋势；年降水呈减少趋势，冬季降水为增加趋势，其他3个季节为减少趋势；年和四季日照时数均为减少趋势，季日照时数减少趋势从大到小依次为夏季、冬季、秋季、春季。

The temperature, precipitation and sunshine data of in Baofeng Station in 1957 -2014 were adopted.The climate change characteris-tics in Baofeng County in recent 58 years were analyzed by linear regression, anomaly, and Mann-Kendall test.Result showed that the annual av-erage temperature in Baofeng County in recent 58 years showed an increasing trend.The average temperature in spring, autumn and winter were all on the rise; while the average temperature in summer showed a downward trend .The annual precipitation decreased; precipitation in winter enhanced, while those in spring, summer and autumn decreased.Annual and seasonal sunshine durations all showed a downward trend .The de-creasing trend of seasonal sunshine duration was in the order of summer, winter, autumn and spring.