干旱区地理2024，Vol.47Issue(11)：1863-1875,13.DOI:10.12118/j.issn.1000-6060.2023.691
关中地区高温脆弱性评估及其时空变化研究
Evaluation of heat vulnerability and its spatial-temporal variation in the Guanzhong area
摘要
Abstract
With global warming,extreme heat events have occurred more frequently,posing significant threats to human health,and social and economic development in many regions.This study comprehensively utilizes re-mote sensing data and socio-economic statistics to develop a heat vulnerability evaluation index system based on the"exposure-sensitivity-adaptability"framework.This approach quantifies heat vulnerability and reveals its spa-tiotemporal characteristics in the Guanzhong region of Shaanxi Province,China,from 2005 to 2020.The results indicate that:(1)The high-temperature zones of summer land surface temperature in the Guanzhong region ex-panded from 2005 to 2020.The spatial pattern of land surface temperature remained relatively consistent,with sub-high-temperature and high-temperature zones distributed sporadically in the central area,while sub-low-tem-perature and low-temperature zones were concentrated in the southern Qinling Mountains.(2)Heat vulnerability in the Guanzhong region exhibited significant spatial clustering,mirroring the distribution pattern of surface tem-perature.Higher vulnerability zones were predominantly located in the central plains,whereas lower and low vul-nerability zones were mainly found in the southern Qinling Mountains.(3)The heat vulnerability index of the Guanzhong region showed a decreasing trend from 2005 to 2020,with the proportion of higher and high vulnera-bility areas declining from 48.20%in 2005 to 37.49%in 2020.(4)From 2005 to 2010,changes in heat vulnerabil-ity levels were relatively minor,whereas from 2010 to 2020,the extent of changes increased substantially,with most regions experiencing a decrease in vulnerability levels.This change was primarily characterized by medium vulnerability shifting to lower vulnerability,higher vulnerability reducing to medium vulnerability,and high vul-nerability decreasing to higher vulnerability.The findings offer valuable insights for enhancing heat adaptability and mitigating heat vulnerability.关键词
地表温度/高温脆弱性/时空变化/关中地区Key words
land surface temperature/heat vulnerability/spatial-temporal variation/Guanzhong area引用本文复制引用
包微,黄晓军,纪王迪..关中地区高温脆弱性评估及其时空变化研究[J].干旱区地理,2024,47(11):1863-1875,13.基金项目
国家自然科学基金项目(41971178)资助 （41971178）
