辽西低山丘陵区地面温度的变化特征

Land Surface Temperature Changing Features in Western Liaoning Hilly Region

用辽宁西部丘陵山区1953—2012年地面温度资料,用气候倾向率等气候诊断分析方法,研究地面温度年际、季节变化趋势和特征。结果表明,地面年平均温度(Td)气候倾向率为0.392℃/10 a,突变点在1989年,温度升高1.7℃;地面年平均最高温度(TdG)气候倾向率为0.155℃/10 a,突变点不明显;地面年平均最低温度(TdD)气候倾向率为0.622℃/10 a,突变点在1994年,温度升高2.7℃。春季T d,T dG,TdD气候倾向率分别为0.497,0.585,0.646℃/10 a,突变点前后温度分别升高1.7,2.6,2.9℃;夏季T d,TdG,TdD气候倾向率分别为0.266,0.206,0.342℃/10 a,突变点前后T d升高1.2℃,TdD升高1.6℃;秋季Td,TdG,TdD气候倾向率分别为0.924,0.116,0.630℃/10 a,突变点前后T d升高1.1℃,TdD升高2.8℃;冬季Td,TdG,TdD气候倾向率分别为0.464,0.300,0.865℃/10 a,突变点前后温度分别升高1.9,1.7,3.4℃。研究结果可为辽西山地小流域综合治理,合理安排农业工程项目提供气候依据。

The paper studies interannual/seasonal tendency and characteristics of surface temperature from 1953 to 2012,based on ground temperature data in Western Liaoning Hilly Region,by untilizing climate tendency rate and other climate diagnostic analysis methods.It is shown from the results：the ground temperature tendency rate of-Td was 0.392 ℃/10 a,the abrupt changing year was 1989,the temperature increased by 1.7 ℃; the climate tendency rate-TdG was 0.155 ℃/10 a,the abrupt changing year wasn＇t so obvious; the climate tendency rate of-TdD was 0.622 ℃/10 a,the abrupt changing year was 1994,the temperature increased by 2.7 ℃.In spring,the climatic tendency rates of-Td,-TdD,and-TdG were 0.497 ℃/10 a,0.585 ℃/10 a and 0.646 ℃/10 a; the temperature increased by 1.7 ℃,2.6 ℃ and 2.9 ℃ respectively after abrupt change; In summer,the climate tendency rates of-Td,-TdG,and-TdD were 0.266 ℃/10 a,0.206 ℃/10 a and 0.342 ℃/10 a,the temperature of-Td and-TdD increased respectively by 1.1 ℃,2.8 ℃ after abrupt change; in autumn,the climate tendency rates of-Td,-TdG,and-TdD were 0.924 ℃/10 a,0.116 ℃/10 a and 0.630 ℃/10 a,and the temperature of-Td and-TdDincreased respectively by 1.2 ℃,1.6 ℃ after abrupt change; in winter,the climate tendency rates of Td,TdG,and-TdD were 0.464 ℃/10 a,0.300 ℃/10 a and 0.865 ℃/10 a,the temperature increased by 1.9 ℃,1.7 ℃ and 3.4 ℃ respectively after abrupt change; the results provide climatic basis for minor drainage basin management and reasonable arrangements for agricultural production in Western Liaoning Hilly Region.