江西科学2024，Vol.42Issue(2)：405-410,6.DOI:10.13990/j.issn1001-3679.2024.02.028
基于地理信息技术的城市热岛效应分析
Study on the Urban Heat Island Effect Analysis in Nanchang Based on Geographic Information Technology
摘要
Abstract
Under the background of global warming and urbanization,Nanchang is facing the envi-ronmental problem of urban heat island effect.Based on geographic information technology,this study uses Landsat 8 remote sensing images of Nanchang in 2014,2018 and 2023,and adopts single window algorithm to study the temporal and spatial variation characteristics of surface temperature and urban heat island in Nanchang at different periods with the help of main parameters such as at-mospheric transmittance,surface emissivity and average atmospheric temperature.The results show that the urban heat island effect in Nanchang has been increasing year by year in recent 10 years,and the areas of strong heat island area and sub-strong heat island area have been increasing contin-uously.These two areas are mainly distributed in the central city on both sides of Ganjiang River,which has a large population and dense buildings,and the urban heat island effect is remarkable.The transition zone,the lower temperature zone and the lowest temperature zone are relatively sta-ble,and the lowest temperature zone and the lower temperature zone are mainly located in water sur-face,woodland,cultivated land,grassland and other areas.In areas with high vegetation coverage,the temperature in areas with large water bodies is often very low,which affects the temperature in the surrounding areas and has a certain cooling effect on urban heat island.The research results can provide a basis for urban development planning and mitigation strategies of urban heat island effect.关键词
南昌市/城市热岛效应/单窗算法/地表温度反演Key words
Nanchang/urban heat island effect/single window algorithm/land surface temperature inversion分类
天文与地球科学引用本文复制引用
黎亮,杨智翔,宁玮..基于地理信息技术的城市热岛效应分析[J].江西科学,2024,42(2):405-410,6.基金项目
江西省科技+水利联合资助计划项目(2022KSG01009) （2022KSG01009）
中国中铁股份公司课题项目(2021-重点-14,2021-重大-08,2022-重大-08) （2021-重点-14,2021-重大-08,2022-重大-08）
江西水利科技项目(202123TGKT09). （202123TGKT09）
