近50年内蒙古多伦县气候变化特征分析  

Analysis on the Characteristics of Climate Change in Recent 50 Years in Duolun County,Inner Mongolia

作　　者：阿如旱[1] 杨持[1] 

机构地区：[1]内蒙古大学生命科学学院

出　　处：《内蒙古大学学报（自然科学版）》2007年第4期434-438,共5页Journal of Inner Mongolia University：Natural Science Edition

基　　金：国家重点基础发展规划项目(G2000048705);农业部草地资源生态重点开放实验室项目资助

摘　　要：以1961~2005年多伦县气象站气象记录为主要数据来源，选取气温、降水量、蒸发量、干湿度等指标，采用常规统计分析方法，进行了年均和季度变化的时间序列分析．结果表明：多伦县年均气温趋于上升趋势，降水量波动较大，并且夏季降水量对全年降水量贡献最大．年均蒸发量总趋势是下降的，整体上比较稳定．干湿度趋于上升，呈现变湿润趋势．近50年来多伦县气候呈现增温增湿的趋势．The long-term change characteristics of air temperature, precipitation, evaporation, dry/wet index in Duolun County, Inner Mongolia are analyzed by time serials based on the meteorological data observed from 1961 to 2005. The results show as follows. The annual mean air temperature has a rising of tendency,that of precipitation has a fluctuation of tendency and it is concentrated in summer. The annual evaporation is generally in an decrease trend and it is stable on the whole. There is a trend of getting wet,it is demonstrated by the changes of wet/dry index. The climate in Duolun County becomes wormer and wetter in recent 50 years.

关 键 词：气候变化 特征分析 多伦县 

分 类 号：P467[天文地球—大气科学及气象学]