近50年辽宁省宽甸满族自治县热量资源变化特征分析

Analysis on Variation Characteristics of Thermal Resources in Kuandian Man Nationality Autonomous County of Liaoning Province in the Past 50 Years

选取宽甸站1960—2010年的气温资料,利用一元线性函数对近50年辽宁省宽甸满族自治县的热量资源变化特征进行分析。结果表明:宽甸站在近50年年平均气温升高1.8℃;春季升高1.5℃,夏季升高0.9℃,秋季升高1.0℃,冬季升高4.0℃;11月—次年2月是气温升高的主要时段;≥10℃积温增加212.6℃;无霜期延长20 d。其中20世纪80年代是气温变化的"拐点",其后年平均气温平均升高1.2℃,四季平均气温分别升高1.1、0.7、0.6、3.5℃;≥10℃积温平均增加148.1℃;无霜期平均延长13 d。

Based on the temperature data of Kuandian Station from 1960 to 2010,the variation characteristics of thermal resources in Kuandian County in the past 50 years were analyzed by using the one-variable linear function.The results showed that the annual average temperature of Kuandian Station was increased by 1.8 ℃ in the past 50 years,and the temperature in spring,summer,autumn and winter was increased by 1.5,0.9,1.0 and 4.0 ℃,respectively;the temperature rising period mainly distributed in November to February;≥10 ℃ accumulated temperature was increased by 212.6 ℃;the frost-free period was extended by 20 days.The period from 1980 to 1989 was the inflexion of the temperature variation;after that period,the annual average temperature was averagely increased by 1.2 ℃,and the average temperature in the four seasons was increased by 1.1,0.7,0.6,3.5 ℃,respectively;≥10 ℃ accumulated temperature was increased by 148.1 ℃;the frost-free period was averagely extended by 13 days.