辽宁省本溪县近52年来气候变化特征研究

Study on Variation Characteristics of Climate in Benxi County,Liaoning Province in Recent 52 Years

根据全球气候变暖这一事实,利用1958～2009年本溪县气温、降水和日照资料,应用数理统计方法,分析温、光、水三大气象要素随时间的变化特征。结果表明:本溪县气温呈波动性明显上升变化趋势,而降水和日照则呈波动性减少变化趋势。气温的四季变化特点是春夏秋冬均呈升高趋势,以冬季升温幅度最大,夏季最小;降水的四季变化为夏季和秋季呈减少趋势,春季和冬季为增加趋势。夏季减少最多,冬季增加最多;日照时数的变化除夏季为增加趋势外,其余均为减少趋势,春季和冬季是减少的主体,秋季变化不明显。

According to the fact of global climate wanning,by utilizing the air temperature,precipitation and sunshine data in Benxi County during 1958 -2009,applied mathematical statistics method,the variation characteristics of temperature,light,water with time were analyzed. The resuits showed that：Benxi temperature fluctuated obviously at upward trend,while the precipitation and sunshine fluctuated at decrease trend. The temperature at four seasons are all at increasing trend, it rises most in winter and least in summer; the precipitation showed at decreasing trend in summer and autumn, and increasing trend in spring and winter. Also the precipitation reduced the most in summer and increased the most in win- ter; sunshine duration changes are all at decreasing trend in spring, autumn and winter but shows increasing trend in summer, spring and winter are the main body for the reduction and no sitmificant chanze is autumn.