干旱地区农业研究Issue(5)：234-238,5.
山西东南部气候变暖背景下的霜冻特征分析
Analysis of the frost characteristics under the background of climate warming in Southeast Shanxi province
摘要
Abstract
Based on the data of average temperature,first-last frost dates and frost-free period in spring,autumn season and year from 1971 to 2010 in 11 weather stations at southeast Shanxi province,the time-space distribution char-acteristics and genesis of the first-last frost and the variation characteristics of first-last frost dates and frost-free period under the background of climate warming were analyzed by using the mathematical statistics and contrast methods .The results showed that:The annual temperature change during 1971-1996 was belonged to the slow warming period with oscillation,After 1997 the climate started to be the apparent warming period,the climate warming rate was 0 .3℃· 10a-1 .The time-space distribution of the first-last frost was the close relation with the special geographical environment conditions .Under the precondition of the autumn climate warming,the occurrence of the first frost date pushed back rate was 2 d·10a-1,the inter annual variation trend showed three stages as positive and negative oscillation push later peri-od,partial early period and smoothly push later period.The average warming rate in spring season was 0.25℃·10a-1, the corresponding appearance of last frost date presented an advance tendency,the advance rate was 4 d·10a-1 .The in-ter annual variation characteristics can be divided into four stages as partial later period,partial early period,positive and negative oscillation period and partial early period .Under the background of climate warming of the frost-free period,the inter annual variation features could be divided into three stages as extended period,shrinkage period and stable exten-sion period,the linear change extended rate of frost-free period was 7 d·10a-1 .关键词
气候变暖/初终霜冻日期/无霜期/特征分析Key words
climate warming/first and last frost dates/frost-free period/feature analysis分类
农业科技引用本文复制引用
王正旺,刘新莹,武志跃,杨红峰,孙英杰,王景秀..山西东南部气候变暖背景下的霜冻特征分析[J].干旱地区农业研究,2014,(5):234-238,5.基金项目
山西省气象局重点项目“初终霜冻气候特征及预报研究”（晋气验字2010第13号）；山西省科技攻关项目“基于GIS的极端气象灾害预警与评估集成系统” （）
