摘要
本文基于1991~2016年洪涝灾害损失指标统计成果,运用物元分析法对洪涝灾害损失进行评估分级,并定性分析降雨量对洪涝灾害损失的影响程度.分析结果为:1)江西几乎年年都有洪灾损失产生,小灾、大灾、重灾分别占总年份的65%、19%、16%,且重灾主要集中在20世纪90年代;2)影响洪灾损失的主要降雨指标为年降雨量、汛期降雨量、月降雨变异系数,且呈正比关系;3)受各种工程措施和非工程措施影响,同等频率降雨条件下,2000年以后,特别是2010年以后洪灾损失程度较20世纪90年代大大减小.
Based on the statistical results of flood disaster losses in 1991~2016,this article uses matter-element analysis to evaluate and grade flood disaster losses,and analyzes the changes of rainfall indicators that affect flood disaster losses.The results shows:1)Every year,Jiangxi province suffers from flood disaster losses.The years of minor disasters,major disasters,and severe disasters accounted for 65%,19%,and 16%,respectively.The years of severe disasters were mainly concentrated in the 1990s.2)The main rainfall indicators that affect the degree of change in flood loss are annual rainfall,rainfall during the flood season,and monthly rainfall coefficient of variation.Flood damage losses and rainfall indicators are directly proportional.3)Affect by various engineering measures and nonengineering measures,under the same frequency of rainfall,after 2000,especially after 2010,the degree of flood damage was greatly reduced compared with the 1990s.
作者
欧阳千林
占承德
OUYANG Qianlin;ZHAN Chende(Poyang Lake Hydrology Bureau of Jiangxi Province,Lushan 332800,China;Jiujiang Municipal Hydrology Bureau of Jiangxi Province,Jiujiang 332000,China)
出处
《江西水利科技》
2020年第5期325-331,共7页
Jiangxi Hydraulic Science & Technology
关键词
江西
洪灾损失
等级评估
降雨量
Jiangxi
Flood disaster losses
Grade asessment
Rainfall
作者简介
欧阳千林(1987-),男,大学本科.
