Indexed by:Journal paper

Document Code:107587

First Author:Wenjian Pan*

Co-author:Juan Du

Journal:Building and Environment

Included Journals:SCI、EI

Place of Publication:United Kingdoom

Discipline:Engineering

First-Level Discipline:Architecture

Document Type:J

Volume:192

ISSN No.:0360-1323

Key Words:Night-time lighting; Urban morphology; Outdoor public space; Neighbourhood type; Light pollution; Urban design; Urban village

DOI number:10.1016/j.buildenv.2021.107587

Date of Publication:2021-04-01

Impact Factor:7.093

Abstract:Lighting is a vital environmental element that affects people's outdoor activities and the creation of liveable neighbourhoods in cities. The use of appropriate lighting at night in public spaces can benefit people's social well-being. This research examined the effects of urban morphological characteristics on outdoor night-time lighting behaviours by analysing 11 urban neighbourhoods that reflect the variety of the prevailing urban morphological patterns in the city centres of Shenzhen. A set of urban morphological descriptors were analysed and two lighting parameters were evaluated by on-site measurement. The results revealed that the low-density high-rise modern neighbourhoods presented very high outdoor illuminance levels, but extremely low occupant use at night, and consequently, remain significant potential of light pollution and energy waste. By contrast, urban villages with high-density mid-rise patterns possess limited outdoor lighting facilities but exhibited very high nocturnal neighbourhood vitality. This type of neighbourhood presents a "demand-oriented and energy-saving" lighting behaviour during the night-time through the use of light spill from the nearby indoor light sources. Multivariable linear regression indicated that morphological characteristics significantly contribute to the illumination distribution within urban spaces. Together, building coverage ratio, floor area ratio, tree coverage ratio and ground surface albedo explain 88% of the variability of night-time site illuminance uniformity. With adding the dimension of urban morphology, this research tries to extend the scope of urban nocturnal lighting studies and provides insights into the setting of more specific criteria for urban design, so as to contribute to healthy city initiatives.

Number of Words:8000

Links to published journals:https://www.sciencedirect.com/science/article/pii/S0360132321000032?via%3Dihub