摘要
近些年我国城市内涝发生频次显著增加,内涝灾害造成的直接经济损失数额巨大。利用降水、数字高程模型、人口和社会经济等数据对河南商丘市城市内涝灾害风险进行了评估;根据各因子及其权重建立商丘市内涝灾害风险评估模型,定量计算各因子的内涝灾害风险指数,将各项数据叠加得到商丘市城市内涝灾害风险指数,并对高低风险区进行了划分,发现高风险区主要位于中心城区,风险高低分布从中心向四周递减;最后依据内涝积水数据对评估结果进行检验,得出评估结果具有较高的可信度。
In recent year,urban waterlogging disasters has been increasing significantly in China,causing heavy economic losses.This paper uses precipitation,DEM,population and socio-economic data to evaluate the urban waterlogging disaster risk in Shangqiu.The methodology involves establishing a risk evaluation model for waterlog.ging disasters in Shangqiu based on each factors and their weights;calculating quantitative waterlogging disaster risk index of each factor.Then,the risk index of urban waterlogging disaster in Shangqiu is obtained by superim.posing the data,and the high and low risk areas are divided.It is founded that high-risk areas are mainly located in the central urban area,and the distribution of risk is decreasing from the center to the surrounding area.Final.ly,the evaluation results are tested based on the waterlogging data,and it is founded that the results have high reli.ability.
作者
杨林博
YANG Linbo(Shangqiu Meteorological Bureau,Henan Province,Shangqiu 476000)
出处
《中国防汛抗旱》
2019年第9期24-30,共7页
China Flood & Drought Management
