使用手机位置数据揭示社区对极端高温事件的适应
Hao Tian1, Heng Cai1, Leiqiu Hu2
1Department of Geography, Texas A&M University, College Station, TX 77840, USA.
Journal of environmental management
|July 20, 2024
概括
极端的高温大大减少了白天的旅行,并将活动转移到晚些时候,特别是在弱势群体中. 这突显了超出物理暴露的热适应能力的不平等.
科学领域:
- 环境科学 环境科学
- 城市规划 城市规划
- 公共卫生 公共卫生
背景情况:
- 极端高温事件的频率,持续时间和强度正在增加,对人类社会构成重大风险.
- 在极端高温期间了解人类的移动模式对于准确评估热暴露风险至关重要.
研究的目的:
- 通过使用手机位置数据,调查不同社区如何适应极端高温事件的旅行行为.
- 量化城市和城市内部规模的日间移动性变化和活动时间转移.
主要方法:
- 利用了广大休斯顿大都会地区的匿名手机位置数据.
- 开发了移动性扰乱指数 (MDI) 和活动时间转移指数 (ATSI).
- 用于因果关系分析的地理融合交叉映射 (GCCM).
主要成果:
- 人类的移动性在白天极端高温期间显著下降,晚上8点后活动增加,晚上旅行延迟.
- 流动性下降和活动延迟显示了人口普查区组间的实质性空间异质性.
- 少数民族和贫困比例较高的地区表现出较低的适应热量适应战略的能力.
结论:
- 热适应不平等存在于物理暴露之外,与人口能力和知识有关.
- 这项研究量化了对极端高温的多层次移动反应,为新的缓解和适应战略提供了信息.
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