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Exploring the spatial association between the distribution of temperature and urban morphology with green view index

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  • Ta-Chien Chan
  • Ping-Hsien Lee
  • Yu-Ting Lee
  • Jia-Hong Tang

Abstract

Urban heat islands will occur if city neighborhoods contain insufficient green spaces to create a comfortable environment, and residents’ health will be adversely affected. Current satellite imagery can only effectively identify large-scale green spaces and cannot capture street trees or potted plants within three-dimensional building spaces. In this study, we used a deep convolutional neural network semantic segmentation model on Google Street View to extract environmental features at the neighborhood level in Taipei City, Taiwan, including the green vegetation index (GVI), building view factor, and sky view factor. Monthly temperature data from 2018 to 2021 with a 0.01° spatial resolution were used. We applied a linear mixed-effects model and geographically weighted regression to explore the association between pedestrian-level green spaces and ambient temperature, controlling for seasons, land use information, and traffic volume. Their results indicated that a higher GVI was significantly associated with lower ambient temperatures and temperature differences. Locations with higher traffic flows or specific land uses, such as religious or governmental, are associated with higher ambient temperatures. In conclusion, the GVI from street-view imagery at the community level can improve the understanding of urban green spaces and evaluate their effects in association with other social and environmental indicators.

Suggested Citation

  • Ta-Chien Chan & Ping-Hsien Lee & Yu-Ting Lee & Jia-Hong Tang, 2024. "Exploring the spatial association between the distribution of temperature and urban morphology with green view index," PLOS ONE, Public Library of Science, vol. 19(5), pages 1-17, May.
  • Handle: RePEc:plo:pone00:0301921
    DOI: 10.1371/journal.pone.0301921
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