The cooling effect of green infrastructure on surrounding built environments in a sub-tropical climate: a case study in Taipei metropolis

Wan-yu Shih

Landscape Research, 2017, vol. 42, issue 5, 558-573

Abstract: Green infrastructure that provides cooling service is regarded as a critical urban planning strategy to mitigate urban heat. This study assesses important greenspace and matrix factors that contribute to greenspace cooling effect beyond greenspaces in Taipei metropolis using Landsat 8 satellite imagery. The results indicated that both greenspace and matrix features have jointly affected greenspace cooling intensity, but their cooling contributions to the mean temperature of greenspace and that of surrounding built environments were not necessarily identical or explicit. Larger greenspaces with compact/simple shape, containing more water elements and higher greenness tended to be cooler, whereas higher development intensity, lower tree proportion and fewer water elements in the matrix tended to produce warmer built environments. The influence of these features on temperature outside greenspaces varied by distance. With the distance increasing from greenspaces, the effect of greenspace features dropped and that of matrix features rose.

Date: 2017
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DOI: 10.1080/01426397.2016.1235684

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