长沙市早稻生长季≥10℃积温变化特征
≥10 ℃ Accumulated Temperature Variation Characteristics in Early Rice Growing Season in Changsha City
程理君 1谌晓玲 1彭梦霜 1章竹青1
作者信息
- 1. 湖南省长沙市气象局,湖南长沙410205
- 折叠
摘要
利用1961-2015年长沙市早稻生长季(3月中旬-7月中旬)地面观测资料,采用线性统计、M-K突变检验等统计方法,对近55年长沙市早稻生长季内≥10℃积温的变化特征进行分析.结果表明,1961-2015年长沙市早稻生长季≥10℃活动积温存在明显的上升趋势,20世纪呈波动弱下降趋势,21世纪呈明显上升趋势;突变年份出现在2002年.近55年早稻生长季≥10℃活动积温均值为2 696.4 ℃·d,最高出现在2008年,为3 147.5℃·d,最低出现在1987年,为2 437.3℃·d,极差为710.2℃·d.
Abstract
Using ground observation data in early rice growing season(mid Mar.-mid-Jul.) in Changsha City during 1961-2015,by linear statistics,M-K mutation test and other statistical methods,≥ 10 ℃ accumulated temperature variation characteristics were analyzed.The results showed that ≥ 10 ℃ accumulated temperature in early rice growing season in Changsha City during 1961-2015 presented an upward trend.In the 20th Century,it was a weak fluctuation decreasing trend,while in the 21 st Century,a significant increasing trend was presented;the mutation occurred in 2002.The mean of ≥ 10 ℃ accumulated temperature in early rice growing season in recent 55 years was 2 696.4 ℃ · d with the maximum(3 147.5 ℃ ·d) in 2008 and the minimum(2 437.3 ℃ ·d) in 1987,the range was 710.2 ℃ ·d.
关键词
早稻生长季/≥10℃积温/变化特征/长沙市Key words
Early rice growing season/≥ 10 ℃ accumulated temperature/Variation characteristics/Changsha City引用本文复制引用
基金项目
湖南省气象局重点课题()
长沙市气象局课题()
出版年
2017
国家科技期刊平台
NSTL
维普
万方数据