基于多源数据的郑州市内涝风险评估

Risk Assessment of Waterlogging in Zhengzhou Based on Multi-source Data

摘要:

城市内涝风险评估是防控与管理城市内涝灾害、减少灾害损失的有效手段。基于内涝风险评估框架“H（危险性）-E（暴露性）-V（脆弱性）”，选取了12个评估指标，包括遥感数据、POI数据与传统的社会经济与人口数据等多源数据。结合层次分析法（AHP）和地理信息系统（GIS）空间分析方法，构建了基于多源数据的城市内涝风险评估模型。结果表明：郑州市中心城区内涝风险整体上呈现出从中心区域的高风险逐渐向四周降低的趋势。高风险和次高风险区主要分布在郑州市主城区中心区域、中原区中部和金水区东部。次低风险和低风险区主要分布在惠济区北部和二七区西南部的山区。

Abstract:

Urban waterlogging risk assessment is an effective method for controlling and managing the urban waterlogging disasters and reducing the disaster losses. Based on the framework of waterlogging risk assessment "H (hazard)-E (exposure)-V (vulnerability)", 12 assessment indicators are selected, including the multi-source data such as remote sensing data, POI data, and traditional socio-economic and population data. Combined with the analytic hierarchy process (AHP) and geographic information system (GIS) spatial analysis methods, an urban waterlogging risk assessment model based on multi-source data is constructed. The results show that the overall waterlogging risk in the central urban area of Zhengzhou City gradually decreases from the high-risk central area to the surrounding areas. The high-risk and second high-risk areas are mainly distributed in the central area of the main urban area, the central area of Zhongyuan District, and the eastern area of Jinshui District. The second low-risk and low-risk areas are mainly distributed in the northern area of Huiji District and the mountainous area in the southwestern area of Erqi District. The research results can provide the scientific advice for urban waterlogging risk management in Zhengzhou City.