Guo Wenbo, Schwanen Tim, Brand Christian, Chai Yanwei
Transport Studies Unit, School of Geography and the Environment, University of Oxford, OX1 3QY, UK.
College of Urban and Environmental Sciences, Peking University, 100871, China.
Health Place. 2025 Jul;94:103477. doi: 10.1016/j.healthplace.2025.103477. Epub 2025 Apr 30.
The dynamics of everyday life and mobility patterns are often neglected in studies examining the association between air pollution and subjective wellbeing (SWB). We investigated the association between air pollution exposure, both by ambient and perceived measurement, and subjective wellbeing for individuals' activity episodes and trips in Beijing.
Data on 1688 activities and 573 trips were obtained from the activity-travel diary survey in the Meiheyuan residential community, Beijing, from November 2017 to January 2018. Real-time exposure to ambient air pollution (AAP) in the form of fine particulate matter (PM) was collected using portable air pollution sensors, and perceived air pollution (PAP) and SWB at the episode level were acquired through activity-travel diaries. Multi-level structural equation modelling (ML-SEM) was used to investigate the associations between air pollution and SWB separately for daily activity episodes and trips.
PAP is not only directly associated with SWB at both activity and trip episodes but also mediates between AAP and SWB for activities. A time-lagged effect of AAP on SWB is observed for trips, where AAP of the preceding episode is directly linked to SWB at the current episode. Location plays a fundamental role in shaping individuals' AAP, PAP and SWB at activity episodes. The effects of start time, location, activity type and duration are primarily mediated by location and location-PAP. life circumstances shape their exposure to and perceptions of air pollution, as well as their SWB during activity and trip episodes.
People's perception of air pollution bears a more pronounced relationship with their satisfaction with individual activities and trips compared to the objective measurements of ambient PM exposure. It also highlights that ambient PM exposure during the preceding activity episode has a time-lagged effect on satisfaction with the current trip episode.
在研究空气污染与主观幸福感（SWB）之间的关联时，日常生活动态和出行模式常常被忽视。我们调查了北京居民在活动时段和出行过程中，通过环境监测和主观感受测量的空气污染暴露与主观幸福感之间的关联。
2017年11月至2018年1月，在北京美和园住宅小区进行了活动-出行日记调查，获取了1688次活动和573次出行的数据。使用便携式空气污染传感器收集细颗粒物（PM）形式的实时环境空气污染（AAP）暴露数据，并通过活动-出行日记获取活动时段的主观空气污染（PAP）和主观幸福感数据。采用多层次结构方程模型（ML-SEM）分别研究日常活动时段和出行过程中空气污染与主观幸福感之间的关联。
PAP不仅在活动和出行时段均与SWB直接相关，而且在活动中还介导了AAP与SWB之间的关系。在出行中观察到AAP对SWB的时间滞后效应，即前一活动时段的AAP与当前活动时段的SWB直接相关。地点在塑造个体活动时段的AAP、PAP和SWB方面起着根本性作用。开始时间、地点、活动类型和持续时间的影响主要通过地点以及地点-PAP介导。生活环境塑造了他们对空气污染的暴露和感知，以及他们在活动和出行时段的SWB。
与环境PM暴露的客观测量相比，人们对空气污染的感知与他们对个体活动和出行的满意度之间的关系更为显著。这也凸显了前一活动时段的环境PM暴露对当前出行时段满意度具有时间滞后效应。
