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Buildings 2016, 6(1), 2; doi:10.3390/buildings6010002

Diurnal Thermal Behavior of Pavements, Vegetation, and Water Pond in a Hot-Humid City

1
College of Architecture, Nanjing Tech University, Nanjing 211800, China
2
State Key Laboratory of Subtropical Building Science, South China University of Technology, Guangzhou 510640, China
*
Author to whom correspondence should be addressed.
Academic Editor: Adrian Pitts
Received: 23 November 2015 / Revised: 13 December 2015 / Accepted: 21 December 2015 / Published: 24 December 2015
(This article belongs to the Special Issue Sustainable Buildings: Design for Comfort and Users)
View Full-Text   |   Download PDF [2074 KB, uploaded 24 December 2015]   |  

Abstract

This study investigated the diurnal thermal behavior of several urban surfaces and landscape components, including pavements, vegetation, and a water pond. The field experiment was conducted in a university campus of Guangzhou, South China, which is characterized by a hot and humid summer. The temperature of ground surface and grass leaves and the air temperature and humidity from 0.1 to 1.5 m heights were measured for a period of 24 h under hot summer conditions. The results showed that the concrete and granite slab pavements elevated the temperature of the air above them throughout the day. In contrast, the trees and the pond lowered the air temperature near ground during the daytime but produced a slight warming effect during the nighttime. The influence of vegetation on air temperature and humidity is affected by the configurations of greenery. Compared to the open lawn, the grass shaded by trees was more effective in cooling and the mixture of shrub and grass created a stronger cooling effect during the nighttime. The knowledge of thermal behavior of various urban surfaces and landscape components is an important tool for planners and designers. If utilized properly, it can lead to climatic rehabilitation in urban areas and an improvement of the outdoor thermal environment. View Full-Text
Keywords: outdoor thermal environment; field experiment; urban surfaces; landscape components; diurnal thermal behavior outdoor thermal environment; field experiment; urban surfaces; landscape components; diurnal thermal behavior
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Yang, X.; Zhao, L. Diurnal Thermal Behavior of Pavements, Vegetation, and Water Pond in a Hot-Humid City. Buildings 2016, 6, 2.

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