Optimizing the spatial pattern of the cold island to mitigate the urban heat island effect

Qiu, Jiang; Li, Xiaoyü; Qian, Wenqi

doi:10.1016/j.ecolind.2023.110550

Cited by 21 publications

(3 citation statements)

References 49 publications

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“…Additionally, the construction of a cold island network to optimise the ecological spatial pattern has been widely discussed [31]. Currently, the minimum cumulative resistance model (MCR) is employed to primarily construct cold conduction networks, while circuit theory is rarely applied in this area.…”

Section: Introductionmentioning

confidence: 99%

Constructing an Ecological Network Based on Heat Environment Risk Assessment: An Optimisation Strategy for Thermal Comfort Coupling Society and Ecology

Gao,

Wang,

Gao

et al. 2024

Sustainability

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Urbanisation is a significant driver of global climate change. It increases global temperatures, impacting the health of residents. To date, research on urban heat environments has focused on society or ecology, overlooking the value of integrating the two factors. The research objective is to integrate socio-ecological benefits, explore the construction methods of ecological-cooling networks, and provide reasonable guidance for urban climate planning, thus contributing to the alleviation of urban heat risks and improving thermal comfort. Using Fuzhou as an example, an environmental risk framework was used to construct an urban heat environment risk assessment strategy based on hazards (thermal comfort), exposure (human-development footprint), and vulnerability (natural geographic conditions). The source area was identified based on evaluation results, an ecological network was constructed using circuit theory, and key nodes were identified. Results showed that in 2005 and 2020, 3% and 12% of areas in Fuzhou had higher thermal environmental risks, the proportion of low-risk areas was 43% and 28%, respectively. In sum, 54 ecological source locations, 124 ecological corridors, 76 ecological pinch points, 110 obstacle points, and 12 stepping stones were identified during the construction of corridors in 2020. Compared with 2005, the source area has decreased by 1622.46 km2 and the average length of the corridor has also decreased by 4.69 km.

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Section: Introductionmentioning

confidence: 99%

Constructing an Ecological Network Based on Heat Environment Risk Assessment: An Optimisation Strategy for Thermal Comfort Coupling Society and Ecology

Gao,

Wang,

Gao

et al. 2024

Sustainability

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“…As the process of urbanization accelerates, the phenomenon of the UHI effect has become increasingly prominent, exerting profound impacts on urban climate, residents' comfort, and energy consumption [1,2]. The UHI effect refers to the significant increase in temperature in urban center areas compared to suburban areas, caused by heat emitted from human activities and dense urban buildings [3][4][5][6]. In urban planning, the impact of architectural layout on the UHI effect is particularly crucial as it determines the distribution and flow of urban heat.…”

Section: Introductionmentioning

confidence: 99%

The Impact of Architectural Layout on Urban Heat Island Effect: A Thermodynamic Perspective

Bao,

Zou

2024

IJHT

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The urban heat island (UHI) effect refers to the phenomenon where central urban areas exhibit higher temperatures than surrounding suburban areas due to concentrated human activities and building structures. This effect significantly impacts urban environments, the quality of life of residents, and energy demands. With the continuous advancement of urbanization, the UHI effect is becoming increasingly severe, making it a focal point in the fields of urban planning and architectural design. However, existing studies often rely on macro-climatic data and lack a thorough analysis of the thermodynamic properties at the urban micro-scale, failing to fully reveal the mechanism behind the impact of architectural layout on the UHI effect. This study begins with a thermodynamic perspective, exploring the changes in thermal stability of the boundary layer in different urban areas under the UHI effect through the heat flux equation. It analyzes the impact of different architectural layouts on the urban thermal environment. The research demonstrates that urban heating disturbances and the average state induced by the UHI effect have distinct regional characteristics in terms of boundary layer thermal stability. Furthermore, by utilizing spatial autocorrelation analysis and the principle of hot and cold spot identification, this paper deeply investigates the spatial autocorrelation and its evolution in urban architectural layouts, assessing the potential of architectural layouts in mitigating the UHI effect. These findings provide new perspectives and tools for urban planning, contributing to the optimization of the urban thermal environment, enhanced energy efficiency, and improved resident comfort.

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“…Por ejemplo, en las regiones costeras del mundo el efecto de la UHI es extremo, modificando la meteorología regional desde extremas olas de calor hasta inundaciones y se prevé que se intensifique el fenómeno (Qiu et al, 2023). En estas regiones la complejidad aumenta producto de la brisa marina que dirige las UHI varios kilómetros tierra dentro hasta su disipación (Yun et al, 2020).…”

Section: Introductionunclassified

Análisis espaciotemporal de islas de calor aplicado en la ciudad costera de San Francisco de Campeche, México

Canul-Turriza,

Aké-Turriza,

May-Tzuc

et al. 2024

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The urbanization of the city of San Francisco de Campeche influences the formation of urban heat islands due to construction materials, buildings and structures, human activities, lack of vegetation, and transportation infrastructure. Heat islands have negative consequences such as increased energy consumption and heat stress for the population, contributing to climate change due to increased greenhouse gas emissions caused by additional energy demand. Cities such as Sydney, Beijing, Nanjing, Moscow, and Hong Kong are implementing urban planning strategies that promote urban vegetation, the use of reflective building materials, the improvement of public transport, and the promotion of energy efficiency in buildings. Landsat satellite images were used to analyze population growth and urban sprawl to identify heat islands, and a vegetation index analysis was also made. Regarding the analyses, it was recognized that the temperature increased by approximately 6°C between 1990 and 2022. There has also been a decrease in vegetation due to the urban sprawl and housing growth, quadrupling the Normalized Difference Vegetation Index (NDVI) in the 0-0.25 class for the same period. Finally, mitigation measures are proposed to counteract the effects caused by heat islands in the city.

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Optimizing the spatial pattern of the cold island to mitigate the urban heat island effect

Cited by 21 publications

References 49 publications

Constructing an Ecological Network Based on Heat Environment Risk Assessment: An Optimisation Strategy for Thermal Comfort Coupling Society and Ecology

Constructing an Ecological Network Based on Heat Environment Risk Assessment: An Optimisation Strategy for Thermal Comfort Coupling Society and Ecology

The Impact of Architectural Layout on Urban Heat Island Effect: A Thermodynamic Perspective

Análisis espaciotemporal de islas de calor aplicado en la ciudad costera de San Francisco de Campeche, México

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