摘要
夏日持续性高温热浪频繁发生,严重影响了人类的生产和生活,为挖掘精细空间尺度高温热浪风险机制,本文基于遥感影像(Landsat 8)、夜间灯光遥感(DMSP/OLS)、人口密度、社会统计、气象站数据等多源数据,以郑州市2019年7月23日的一次高温热浪事件为例,利用层次分析法(AHP)在30 m空间分辨率精细尺度上构建基于“高温危险性—脆弱性—暴露性—适应性”的高温热浪风险评估体系,对城市高温热浪风险进行评估,结果表明:高温热浪风险高值区主要分布在城市中心区域,由市中心向外围扩散,高温热浪风险逐渐降低;研究区西部和西南部高温热浪风险最为严重,由西部向东部发展,高温热浪等级逐渐降低,扩展到中牟县热浪等级降为最低。
The frequent occurrence of persistent heat waves in summer has seriously affected human production and life.In order to explore the risk mechanism of heat waves at fine spatial scale,this paper was based on multi-source data such as remote sensing image(Landsat 8),defense meteorological satellite program/operational linescan system(DMSP/OLS),population density,social statistics and weather station data.Taking a high temperature and heat wave event in Zhengzhou on July 23,2019 as an example,the analytic hierarchy process(AHP)was applied to construct a high temperature heat wave risk assessment system based on"high temperature risk--vulnerability--exposure--adaptability"on the 30m spatial resolution fine scale.The results showed that the high risk area of heat wave mainly distributed in the central area of the city,spreading from the center to the periphery,and the risk of heat wave decreased gradually.The risk of heat wave was the most serious in the west and southwest of the study area,and the heat wave grade gradually decreased from the west to the east,extending to Zhongmou county where the heat wave grade dropped to the lowest.
作者
顾盼盼
缑少伟
GU Panpan;GOU Shaowei(School of Civil and Surveying and Mapping Engineering,Jiangxi University of Science and Technology,Ganzhou Jiangxi 341400,China)
出处
《北京测绘》
2023年第4期542-546,共5页
Beijing Surveying and Mapping
关键词
高温热浪
层次分析法
风险评估
夜间灯光
地表温度
high temperature heat wave
analytic hierarchy process(AHP)analytic hierarchy process
risk assessment
nighttime lights
surface temperature
