CAJ | 학술논문

基于莆田市各站点降水量资料,采用 Mann-Kendall 秩次相关法、Mann-Kendall 突变检验法以及 Morlet 小波分析法等,从空间分布、变化趋势、突变性以及周期性等方面系统剖析了57年来莆田市及各分区降水的时空演变规律。结果表明：(1)莆田市年降水量空间上呈现出由东南沿海向西北山区逐渐递增的分布规律,57年来绝大部分地区年降水呈不显著增加趋势；(2)降水年内分配不均,而年际变化相对稳定,莆田市及各区年降水大致经历了多雨-少雨交替的5个阶段,且年降水量在1996年-1998年和2003年-2004年间表现出突变性；(3)莆田市及各区年降水均具有3 a、8 a、12 a、28 a 的主周期,除忠门站的第一主周期为22 a 外,其余第一主周期均为28 a。
기우보전시각참점강수량자료,채용 Mann-Kendall 질차상관법、Mann-Kendall 돌변검험법이급 Morlet 소파분석법등,종공간분포、변화추세、돌변성이급주기성등방면계통부석료57년래보전시급각분구강수적시공연변규률。결과표명：(1)보전시년강수량공간상정현출유동남연해향서북산구축점체증적분포규률,57년래절대부분지구년강수정불현저증가추세；(2)강수년내분배불균,이년제변화상대은정,보전시급각구년강수대치경력료다우-소우교체적5개계단,차년강수량재1996년-1998년화2003년-2004년간표현출돌변성；(3)보전시급각구년강수균구유3 a、8 a、12 a、28 a 적주주기,제충문참적제일주주기위22 a 외,기여제일주주기균위28 a。
Based on the precipitation data of each weather station in Putian City,the spatial and temporal variations of precipitati-on were systematically analyzed from the aspects of spatial distribution,variation trend,mutation and periodicity using the meth-ods of Mann-Kendall rank correlation method,Mann-Kendall mutation testt,and Morlet wavelet analysis.The results showed that (1)the spatial distribution of annual precipitation shows an increasing tendency from the southeastern coast to the north-western mountains in Putian,and precipitation in most of the area has an insignificantly increasing trend in the past 57 years;(2)the inter-annual precipitation distribution is not uniform while annual precipitation is relatively stable,annual precipitation shows five alternative stages with more rain and less rain in each district of Putian,and annual precipitation shows a mutation from 1 996 to 1 998 and from 2003 to 2004;and (3)annual precipitation in each district of Putian shows primary periodicities of 3 years,8 years,12 years,and 28 years,and the first primary periodicity is 28 years for all the districts except for Zhongmen sta-tion,which has the first primary periodicity of 22 years.