Long-term trends in extreme heat exposure equity for children and elderly: A case study of Shandong Peninsula urban agglomeration

IF 6.9 2区工程技术 Q1 ENVIRONMENTAL SCIENCES

Urban Climate Pub Date : 2025-09-01 DOI:10.1016/j.uclim.2025.102587

Boyu Li , Zhaoming Wang , Xu Wang , Lei Yao

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引用次数: 0

Abstract

China's warming exceeds global rates, with Shandong Peninsula urban agglomeration (SPUA) showing increasing heat stress on vulnerable groups (children (VG_c) and elderly (VG_e)). Extreme heat exposure drives urban-rural equity disparities. This study explores such issues for VG_c and VG_e in SPUA. We found that: (1) Extreme heat risk (EHR) in urban areas (UA) (0.23) is significantly higher than in rural areas (RA) (0.21) for most of the time. UA (0.013) show a relatively faster growth rate compared to RA (0.010). (2) The exposure of VG_c and VG_e in RA far exceeds that in UA. In UA, the exposure for the majority of them hovers around 1.2×10⁴^∼6.85×10⁵ persons, whereas in RA, the exposure of VG_c and VG_e falls within 1.42×10⁴∼1.54×10⁶ persons in most cases. The exposed population mostly increases at a rate of 4×10²^∼4.5×10⁴ persons/year. (3) VG_c and VG_e show similar spatiotemporal characteristics in exposure equity. In UA, there is severe exposure inequity: 50% of regions face relatively high EHR and exposed populations, and this phenomenon is growing more unequal. In contrast, exposure in RA is relatively equitable: 50% of regions face relatively low EHR and exposed populations, and it tends towards a more equitable state.

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儿童和老年人极端热暴露公平性的长期趋势——以山东半岛城市群为例

中国的变暖速度超过全球，山东半岛城市群（SPUA）对弱势群体（儿童（VGc）和老年人（VGe））的热应激日益增加。极端高温暴露导致城乡公平差距。本研究对SPUA的VGc和VGe进行了探讨。结果表明：(1)在大部分时间，城市地区（UA）的极端热风险（EHR）显著高于农村地区（RA）（0.21）。UA（0.013）的生长速度比RA（0.010）要快。(2) RA中VGc和VGe的暴露量远远超过UA。在UA中，大多数人的暴露量徘徊在1.2×104 ~ 6.85×105人左右，而在RA中，VGc和VGe的暴露量在1.42×104 ~ 1.54×106人左右。暴露人群以每年4×102 ~ 4.5×104人的速度增加。(3) VGc和VGe在暴露公平性方面表现出相似的时空特征。在UA，存在严重的暴露不平等：50%的地区面临相对较高的电子健康风险和暴露人群，而且这种现象正变得越来越不平等。相比之下，RA的暴露相对公平：50%的地区面临相对较低的电子健康风险和暴露人群，并趋向于更公平的状态。

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来源期刊

Urban Climate Social Sciences-Urban Studies

CiteScore

9.70

自引率

9.40%

发文量

286

期刊介绍： Urban Climate serves the scientific and decision making communities with the publication of research on theory, science and applications relevant to understanding urban climatic conditions and change in relation to their geography and to demographic, socioeconomic, institutional, technological and environmental dynamics and global change. Targeted towards both disciplinary and interdisciplinary audiences, this journal publishes original research papers, comprehensive review articles, book reviews, and short communications on topics including, but not limited to, the following: Urban meteorology and climate[...] Urban environmental pollution[...] Adaptation to global change[...] Urban economic and social issues[...] Research Approaches[...]