摘要
选取玉林市58年不同短历时强降水资料,采用趋势线、变化倾向率及相关系数、极值的时间分布、样本均值的时间分布等方法对玉林市不同短历时降雨序列统计分析。结果表明,短历时极值降水呈波动变化,变化倾向率均为增加趋势,其中5~60 min最大降雨量增多趋势较显著,倾向率增幅最大是180 min历时。短历时极值降水具有速度快、高强度、持续短特点,各部门应第一时间做好排水排涝准备,最大限度降低洪涝灾害造成的经济损失。
Based on the 58 years’data of different short duration heavy rainfall in Yulin City,the trend line,change tendency rate and correlation coefficient,time distribution of extreme value and time distribution of sample mean value were used to analyze the different short duration rainfall series in Yulin City.The results show that the short-term extreme precipitation fluctuates,and the change tendency rate is increasing.The maximum precipitation in 5~60 min has a significant increasing trend,and the tendency rate is the largest in 180 minutes.The short duration extreme precipitation has the characteristics of fast speed,high intensity and short duration.All departments should make good preparation for drainage and waterlogging in the first time to minimize the economic losses caused by flood disaster.
作者
朱小燕
邓雅倩
黄泰森
ZHU Xiao-yan(Yulin Meteorol�ogical Bureau,Yulin,Guangxi 537000)
出处
《农业灾害研究》
2021年第4期85-87,共3页
Journal of Agricultural Catastrophology
基金
广西玉林市气象局课题项目“气候变暖背景下玉林市不同历时降雨强度变化特征研究”(玉气科[2015]01号)。
关键词
不同历时强降水
变化特征
农业生产的影响
玉林市
Heavy rainfall with different durations
Change characteristics
The impact of agricultural production
Yulin City
