摘要
基于松花江流域35个气象站1960—2010年的气温资料,采用协克里格插值法研究气温的空间分布,采用线性倾向估计法与M-K秩次相关法分析气温的时间变化趋势。结果表明:(a)近51 a松花江流域年平均气温呈显著上升趋势,变化倾向率为0.039℃/a,比全球和全国的气温上升幅度大;年平均气温年际变化阶段性明显,显著升温始于1988年。(b)四季平均气温均呈显著上升趋势,变化倾向率分别为0.037℃/a,0.028℃/a,0.036℃/a和0.048℃/a;冬季对流域年平均气温的上升趋势贡献最大。(c)流域年平均气温和四季平均气温在空间分布上具有一定相似性,总体由南向北递减;松嫩平原一带气温较高,流域北部气温较低,松花江干流两侧地区的气温居中。
Based on data from 35 meteorological stations in the Songhua River Basin from 1960 to 2010,the co-kriging interpolation method was used to study the spatial distribution of temperature,and the linear trend method and Mann-Kendall test were used to analyze the temporal change trend of temperature.The results show the following：（a） During the study period,the annual average temperature in the basin showed a significant increasing trend with a rate of 0.039 ℃/a,which was higher than the global and national temperature increase,and the annual average temperature had increased dramatically since 1988.（b） The seasonal average temperature also showed a significant increasing trend,with rates of 0.037 ℃/a,0.028 ℃/a,0.036 ℃/a,and 0.048 ℃/a,respectively,for four seasons.Winter made the most significant contribution to the increasing trend of the annual average temperature.（c） The annual average temperature and the seasonal average temperature were similar in spatial distribution： they both decreased from south to north.The temperature was higher in the Songnen Plain area,lower in the northern basin,and moderate on both sides of the main stream of the Songhua River.
出处
《河海大学学报（自然科学版）》
CAS
CSCD
北大核心
2012年第6期629-635,共7页
Journal of Hohai University(Natural Sciences)
基金
水利部公益性行业科研专项(201001052)
关键词
松花江流域
年平均气温
四季平均气温
气温时空分布
协克里格插值法
Songhua River Basin
annual average temperature
seasonal average temperature
spatio-temporal distribution of temperature
co-kriging method
