摘要
本文选取1980—2015年玉屏县国家一般气象站的日平均气温资料,利用趋势分析法、M-K突变检验等方法,分析玉屏县日平均气温稳定通过10℃期间的初终日、持续日数以及积温的时间变化特征。结果表明,近36年玉屏县日平均气温稳定通过10℃的积温和持续日数总体呈增加趋势(P<0.05),其变化率分别为50.26℃·d/10年和6.65 d/10年。1994年玉屏县的日均气温稳定≥10℃积温发生突变,1998年和2003年日均气温稳定≥10℃持续日数发生突变,持续日数的突变时间落后于积温的突变时间;玉屏县日平均气温稳定通过10℃的开始日期总体呈下降趋势,每10年提前3 d左右开始,结束日期总体呈上升趋势,每10年推后0.5 d左右结束。
Based on the daily mean temperature data of National General Meteorological Station in Yuping County from1980 to 2015,Using trend analysis method and Mann-Kendall test,the paper analyzed the temporal evolution characteristics of the first date,last date,duration and accumulated temperature when the daily mean temperature data steadily pass through 10 ℃. The results showed that accumulated temperature and duration passing through the temperature of 10 ℃ showed increased trend in nearly 36 years in Yuping County,with the change rate of 50.26 ℃·d per 10 years and 6.65 d per 10 years respectively.When the daily mean temperature was above 10 ℃,the accumulated temperature and duration changed abruptly in 1994,1998 and 2003,the abrupt change time of duration was lagged behind that of accumulated temperature;the first date for the daily temperature to steadily pass 10 ℃ was moved up 3 days per decade,and the last date for the daily temperature to steadily pass 10 ℃ was postpone about 0.5 days per decade.
出处
《现代农业科技》
2018年第2期221-223,共3页
Modern Agricultural Science and Technology
基金
“玉屏县农业气候资源时空变化特征分析”(铜气科合[2016]08号)
关键词
气候变化
积温
时间变化
突变
贵州玉屏
climate change
accumulated temperature
temporal change
abrupt change
Yuping Guizhou
