摘要
以内蒙古多伦县为研究区,运用1961-2015年气温、降水量和蒸发量气象数据,采用算数平均、滑动平均和小波分析等数理统计方法分析了多伦县的气候变化特征.研究结果表明:1961-2015年多伦县平均气温呈逐年上升的趋势,不同季节的平均气温也都处于上升的状态;降水量的变化呈波动中小幅下降的趋势;20世纪60、70年代降水量没有较大差别,80年代开始下降,夏季降水量最多,冬季降水量最少;蒸发量变化在近60a一直处于减少的趋势,从2001年开始明显少于以前,春季和夏季的蒸发量较多,冬季的蒸发量最少.从周期性规律来看,多伦县平均气温主要受5~10a、20~30a尺度波动影响,降水量主要受5~10a、10~15a、15~20a和25~30a尺度波动影响,蒸发量主要受2~3a尺度波动影响.
The characteristics of climate change in recent 60 years in Duolun county are analyzed by the index of meteorological data of temperature, precipitation and evaporation based on the mathematical statistics analysis method of arithmetic average, moving average and wavelet analysis from 1961 to 2015. The results show that： during 1961-2015,the average temperature in Duolun County showed a tendency of increasing year by year, and the average temperature in different seasons were also in a state of increasing; precipitation fluctuated slightly downward in 1960s and 1970s, and the precipitation was not much different; in 1980s it began to decline, had the most precipitation in summer, and had the least precipitation in winter; evaporation had been decreasing trend in recent 60 years, from the beginning of 2001 it was less than before,the amount of evaporation was higher in spring and summer,and the evapora- tion in winter was the least. From the aspect of the periodic law,the temperature in the Duolun county of average is mainly affected by 5 ~ 10 a, 20~30 a scale fluctuation, the precipitation is mainly affected by 5~ 10 a, 10~ 15 a, 15~20 a and 25~30 a scale fluctuations, and evaporation is mainly affected by the scale fluctuations of about 2~3 a.
作者
阿如旱
车敏
Aruhan CHE Min(College of Desert Control Science and Engineering, Inner Mongolia Agricultural University, Hohhot 010022 ,China)
出处
《内蒙古师范大学学报（自然科学汉文版）》
CAS
北大核心
2017年第3期426-430,共5页
Journal of Inner Mongolia Normal University(Natural Science Edition)
基金
内蒙古自治区高等学校科学研究项目(NJZY12097)
关键词
气候变化
小波分析
多伦县
climate change
wavelet
analysis
Duolun county
