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http://hdl.handle.net/10397/94207
Title: | To walk or not to walk? Examining non-linear effects of streetscape greenery on walking propensity of older adults | Authors: | Yang, L Ao, Y Ke, J Lu, Y Liang, Y |
Issue Date: | Jun-2021 | Source: | Journal of transport geography, June 2021, v. 94, 103099 | Abstract: | Population aging is a conspicuous demographic trend shaping the world profoundly. Walking is a critical travel mode and physical activity for older adults. As such, there is a need to determine the factors influencing the walking behavior of older people in the era of population aging. Streetscape greenery is an easily perceived built-environment attribute and can promote walking behavior, but it has received insufficient attention. More importantly, the non-linear effects of streetscape greenery on the walking behavior of older adults have not been examined. We therefore use readily available Google Street View imagery and a fully convolutional neural network to evaluate human-scale, eye-level streetscape greenery. Using data from the Hong Kong Travel Characteristic Survey, we adopt a machine learning technique, namely random forest modeling, to scrutinize the non-linear effects of streetscape greenery on the walking propensity of older adults. The results show that streetscape greenery has a positive effect on walking propensity within a certain range, but outside the range, the positive association no longer holds. The non-linear associations of other built-environment attributes are also examined. | Keywords: | Big data Machine learning Population aging Random forest Streetscape greenery Travel behavior Walking behavior |
Publisher: | Pergamon Press | Journal: | Journal of transport geography | ISSN: | 0966-6923 | DOI: | 10.1016/j.jtrangeo.2021.103099 | Rights: | © 2021 Elsevier Ltd. All rights reserved. © 2021. This manuscript version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/ The following publication Yang, L., Ao, Y., Ke, J., Lu, Y., & Liang, Y. (2021). To walk or not to walk? Examining non-linear effects of streetscape greenery on walking propensity of older adults. Journal of transport geography, 94, 103099 is available at https://doi.org/10.1016/j.jtrangeo.2021.103099. |
Appears in Collections: | Journal/Magazine Article |
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Ke_Walk_Or_Not.pdf | Pre-Published version | 1.5 MB | Adobe PDF | View/Open |
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