摘要
利用聊城地区代表站1959-2008年气温及降水资料,用一元线性回归、相关分析等数理统计学方法,对聊城地区近50a来气候变化做了分析。结果表明:聊城地区近50a来年均气温呈上升趋势,增温率为0.07℃/10a,20世纪90年代-21世纪初增温尤其明显。不同季节气温的变化趋势不同,春季变暖趋势最明显。根据冷暖波动情况,可划分成一个冷期和两个暖期;近50a降水量则呈下降趋势,倾向率为-25.22mm/10a,2002年降水最少。各季节中,夏、秋、冬季降水呈下降趋势。根据降水变化可分为三个多雨期和三个少雨期。
Based on the data of temperature and precipitation of Liaocheng regional representative stations from 1959 to 2008,the climatic change of Liaocheng was analyzed.It showed that the temperature for the last 50 years had appeared increasing(0.07℃/10 years),especially in 1990s.The warming trend in spring was more than that in other seasons.For this reason,the climate of Liaocheng region could be divided into one cold period and two warm periods.Furthermore,the precipitation in Liaocheng region for the last 50 years decreased(-25.22mm/10 years),and the precipitation in 2002 was the smallest.The precipitation in summer,autumn and winter decreased.With the change of precipitation,it divided three pluvial periods and three dry periods.
出处
《中国农业气象》
CSCD
2010年第S1期6-9,共4页
Chinese Journal of Agrometeorology
关键词
聊城地区
气温
降水
气候变化
Liaocheng
Temperature
Precipitation
Climatic change
