摘要
为了解四子王旗旱涝变化特征并为防御旱涝灾害提供科学依据,本文以四子王旗及周边地区的4个气象站点1961-2018年逐月降水实测资料为基础,构建月、季、年平均降水量时间序列,分别对区域年际、季平均降雨量进行线性回归及Mann-Kendall突变检验,对该区域降水特征与变化趋势进行分析,从而了解不同时间角度下旱涝变化特征。结果表明:四子王旗降水较不规律,旱涝交替出现,1961-1981年和2002-2018年整体偏涝,1982-2001年基本正常。
In order to understand the variation characteristics of drought and flood in Siziwang and provide scientific basis for the prevention of drought and flood disasters,based on the measured monthly precipitation data from 1961 to 2018 in Siziwang and four meteorological stations at surrounding areas,this paper constructs the time series of monthly,seasonal and annual average precipitation,and carries out linear regression and Mann-Kendall mutation tests on the regional interannual and seasonal average precipitation respectively,and analyzes the precipitation characteristics and variation trends in this region,so as to understand the variation characteristics of drought and flood under different time angles.The results show that the precipitation in Siziwang is irregular.Drought and flood occur alternately.Overall water logging occurred from 1961to 1981 and2002 to 2018.From 1982 to 2001 the precipitation was basically normal in Siziwang.
作者
李金莲
LI Jinlian(The Water Resources Bureau of Siziwang Banner in Wulanchabu in Inner Mongolia,Wulanchabu 011800,China)
出处
《水资源开发与管理》
2019年第12期17-21,共5页
Water Resources Development and Management
