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Int. J. Environ. Res. Public Health 2018, 15(10), 2323; https://doi.org/10.3390/ijerph15102323

Impacts of Individual Daily Greenspace Exposure on Health Based on Individual Activity Space and Structural Equation Modeling

1,2
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1,2,* , 3,4
,
1,2
and
1,2
1
School of Geography and Planning, Sun Yat-sen University, Guangzhou 510275, China
2
Guangdong Provincial Engineering Research Center for Public Security and Disaster, Guangzhou 510275, China
3
Department of Geography and Geographic Information Science, Natural History Building, 1301 W Green Street, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
4
Department of Human Geography and Spatial Planning, Utrecht University, 3584 CB Utrecht, The Netherlands
*
Author to whom correspondence should be addressed.
Received: 30 September 2018 / Revised: 12 October 2018 / Accepted: 16 October 2018 / Published: 22 October 2018
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Abstract

Previous studies on the effects of greenspace exposure on health are largely based on static contextual units, such as residential neighborhoods, and other administrative units. They tend to ignore the spatiotemporal dynamics of individual daily greenspace exposure and the mediating effects of specific activity type (such as physical activity). Therefore, this study examines individual daily greenspace exposure while taking into account people’s daily mobility and the mediating role of physical activity between greenspace exposure and health. Specifically, using survey data collected in Guangzhou, China, and high-resolution remote sensing images, individual activity space for a weekday is delineated and used to measure participants’ daily greenspace exposure. Structural equation modeling is then applied to analyze the direct effects of individual daily greenspace exposure on health and its indirect effects through the mediating variable of physical activity. The results show that daily greenspace exposure directly influences individual health and also indirectly affects participants’ health status through physical activity. With respect to the total effects, daily greenspace exposure helps improve participants’ mental health and contributes to promoting their social health. It also helps improve participants’ physical health, although to a lesser extent. In general, the higher the daily greenspace exposure, the higher the physical activity level and the better the overall health (including physical, mental, and social health). View Full-Text
Keywords: greenspace exposure; health; human mobility; physical activity; structural equation modeling; Guangzhou greenspace exposure; health; human mobility; physical activity; structural equation modeling; Guangzhou
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Zhang, L.; Zhou, S.; Kwan, M.-P.; Chen, F.; Lin, R. Impacts of Individual Daily Greenspace Exposure on Health Based on Individual Activity Space and Structural Equation Modeling. Int. J. Environ. Res. Public Health 2018, 15, 2323.

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