山西农业大学学报（自然科学版）2017，Vol.37Issue(11)：805-810,6.
近61a临汾市小麦生育期降水变化特征分析
Analysis of precipitation change characteristics in Linfen wheat growth stages during 61 years
摘要
Abstract
[Objective]The research aimed to understand the trend of natural precipitation in Linfen city at different growth stages.[Methods]According to daily precipitation of Linfen City in Shanxi Province from 1955 to 2015,time series of precipitation factors in wheat growth stages in the city were analyzed.In this analysis,the multi-year trend line,5a moving averagemethod ,Hurst index,MK mutation analysis and Morlet wavelet cycle analysismethod were used.[Results]The result showed that the precipitation showed a decreasing trend,and the intensity of change trend of precipitation factors in the growth stages was different.The Hurst indices of the precipitation factors at different sta-ges were all greater than 0.5,indicatied that the trend of future precipitation factors was continuous.Cycle changes of precipitation were more complex,but a period of 5-7a existed for each stage.It showed that there was more precipitati-on in greep-up to heading stage,and less in planting to dormancy stage,dormancy stage and heading to maturity stage in the next years.[Conclusion]In general,the precipitation at each wheat growth stage showed a decreasing trend and periodic changes of precipitation,which provided a reference for the prediction of precipitation in the medium or long term.关键词
临汾/Hurst指数/M-K突变检测/Morlet小波分析/降水Key words
Linfen/Hurst index/M-K mutation detection/Morlet wavelet analysis/Precipitation分类
农业科技引用本文复制引用
孙晶京,杨武德,冯美臣,肖璐洁..近61a临汾市小麦生育期降水变化特征分析[J].山西农业大学学报（自然科学版）,2017,37(11):805-810,6.基金项目
国家自然科学基金(31371572,31201168) （31371572,31201168）
山西省回国留学人员重点科研资助项目(重点项目 2014-Key4) （重点项目 2014-Key4）
山西省科技攻关计划项目(201603D221037-3) （201603D221037-3）
山西农业大学科技创新基金(201308) （201308）
