摘要
利用1951—2016年阜新市2个气象观测站逐月降水资料,采用标准化降水指数(SPI),全面的分析了阜新市旱涝时空分布特征。结果表明:阜新市呈现先涝后旱的变化特征,1951—1979年雨涝频繁,1980—2016年干旱偏多。各季节旱涝变化幅度冬季最大,春季次之,秋季第3,夏季最小。冬春季干旱呈现弱的减轻趋势,夏秋季呈弱的加剧趋势。阜新市年旱变化频率为34.9%,年涝变化频率为30.3%,旱略高于涝。阜蒙县和彰武县的旱涝变化与阜新市旱涝变化趋势基本一致,均呈弱干旱化变化趋势,但均不显著。阜新地区的旱涝变率呈现大小交替出现特征,21世纪00年代后期到10年代前期旱涝变率最大,阜、彰两县的变率总体上与阜新地区变率发展趋势相一致。
Based on the monthly precipitation data of two meteorological stations in Fuxin City from 1951 to 2016,the temporal and spatial distribution characteristics of Drought and Flood in Fuxin City were analyzed by using standardized precipitation index(SPI).The results showed that Fuxin City showed the characteristics of the first flood and drought:1951-1979,frequent rainfall,1980-2016 drought was too high.The seasonal variation of drought and floods was the largest in winter,followed by spring,third in autumn and the smallest in summer.Drought in winter and spring showed a weak trend,summer and autumn was weak increase trend.The frequency of annual drought change in Fuxin City was 34.9%,the annual variation frequency was 30.3%,and the drought is slightly higher than that of waterlogging.The changes of drought and flood in Fu Mengxian and Zhangwu counties were consistent with the trend of drought and flood in Fuxin City,and all of them showed weak trend of drought and drought,but they were not significant.The variability of drought and flood in Fuxin area was characterized by the alternation of size,and the variability of drought and flood was the largest in the late 1960s and early 1990s.The variability of the two counties was consistent with the development trend of Fuxin area.
作者
谢媛
Xie Yuan(Fuxin Meteorological Bureau in Liaoning Province,Fuxin,Liaoning 123000)
出处
《农业灾害研究》
2018年第1期23-27,共5页
Journal of Agricultural Catastrophology
关键词
标准化降水指数(SPI)
旱涝
时空特征
阜新市
Standard precipitation in-dex(SPI)
Drought/flood
Spatial-tem-poral characteristics
Fuxin
作者简介
谢媛(1985-),女,辽宁黑山人,工程师,主要从事气象服务与雷电防御研究工作。
