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Microclimatic Impact Analysis of Multi-Dimensional Indicators of Streetscape Fabric in the Medium Spatial Zone

1,2,3,*, 1,2, 4,* and 1,3
1
Center for Modern Chinese City Studies, School of Urban and Regional Science, East China Normal University, Shanghai 200062, China
2
Research Center for Eco Civilization, Shanghai Institute of Eco-Chongming, Shanghai 200062, China
3
Institute for Innovation and Strategic Studies, East China Normal University, Shanghai 200062, China
4
Institute of Spatial Planning and Design, Shenyang Jianzhu University, Shenyang 110168, China
*
Authors to whom correspondence should be addressed.
Int. J. Environ. Res. Public Health 2019, 16(6), 952; https://doi.org/10.3390/ijerph16060952
Received: 9 February 2019 / Revised: 13 March 2019 / Accepted: 13 March 2019 / Published: 16 March 2019
(This article belongs to the Special Issue Smart Architecture and Urban Design)
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Abstract

Different historical backgrounds and planning ideas have created different urban streetscape fabrics. The patterns of the streetscape fabric have affected urban microclimate factors and formed a unique local microclimate. This paper simulated the microclimatic effects in four study areas with different streetscape fabrics in Shanghai to compare the microclimatic conditions with a system of multi-dimensional street morphological indices using ENVI-met 4.3 software. At the street network fabric level, the results showed that streets with a south–north orientation, a small junction spacing, and a street network with better connectivity were conducive to mitigation of the air temperature heating intensity in the street space and improving the ventilation effect; at the street-site level: The indices of Build-to-line ratio (BL), Height-width ratio (H/W), and Sky view factors (SVF) played different roles that affected the distribution characteristics of the microclimate factors. The BL value of the streets between 0.5 and 0.8 generally had a positive relationship with the air temperature. The SVF value of the streets was positively correlated with the microclimate index, while the H/W values were negatively correlated with them. The morphological indicators of different levels also had a synergistic effect on the microclimatic impact of the street space fabric. This comparative analysis of microclimatic characteristics at the medium spatial scale will provide useful suggestions for urban climate adaptability in urban spatial morphology optimization in future urbanization development. View Full-Text
Keywords: urban streetscape fabric; microclimate; street morphological index; ENVI-met; Shanghai urban streetscape fabric; microclimate; street morphological index; ENVI-met; Shanghai
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Jiang, Y.; Han, X.; Shi, T.; Song, D. Microclimatic Impact Analysis of Multi-Dimensional Indicators of Streetscape Fabric in the Medium Spatial Zone. Int. J. Environ. Res. Public Health 2019, 16, 952.

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