XGBoost-Based Analysis of the Relationship Between Urban 2-D/3-D Morphology and Seasonal Gradient Land Surface Temperature

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, Journal Year: 2024, Volume and Issue: 17, P. 4109 - 4124

Published: Jan. 1, 2024

The escalation of greenhouse gas emissions has led to a continuous rise in land surface temperature (LST). Studies have highlighted the substantial influence urban morphology on LST; however, impact different dimensional indicators and their gradient effects remain unexplored. Selecting area Shenyang as case, we chose various representing dimensions. By employing XGBoost for regression analysis, aimed explore 2D 3D seasonal LST its effect. following results were obtained: (1) spatial pattern spring winter was higher suburbs than center. (2) correlation patterns similar, except proportion woodland grass (PWG), digital elevation model (DEM), sky view factor (SVF), which exhibited opposing trends summer autumn. (3) Vegetation construction had highest index, followed by building forms natural landscapes morphology. (4) each indicator varied significantly across gradients. Among all indicators, landscape social development, forms, skyscape impacts areas. built-up areas greater suburban findings this study can assist adjusting provide valuable recommendations targeted improvements thermal environments, thereby contributing sustainable development.

Language: Английский

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Investigating the attribution of urban thermal environment changes under background climate and anthropogenic exploitation scenarios

Sustainable Cities and Society, Journal Year: 2024, Volume and Issue: 107, P. 105466 - 105466

Published: April 22, 2024

Language: Английский

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How urban heat island magnifies hot day exposure: Global unevenness derived from differences in built landscape

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 945, P. 174043 - 174043

Published: June 16, 2024

Language: Английский

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Mapping of Local Climate Zones and Heat Hazard Assessment from a Historical-Future Perspective

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, Journal Year: 2024, Volume and Issue: 17, P. 12622 - 12636

Published: Jan. 1, 2024

Achieving the sustainable development goals puts new demands on land use/land cover (LULC) forecasting and thermal environment improvement. Local climate zone (LCZ) characterization reduces LULC uncertainty in research. This study designed a future multiscenario LCZ assessment framework that integrates remote sensing images, patch-level use simulation model, contribution algorithm. An urban heat island (UHI) classification was used to represent degree of hazard. We sought quantitatively evaluate spatiotemporal distribution its hazard explore coordination mode patterns environment. considered four scenarios: natural scenario (NDS), (UDS), food security scenario, ecological protection scenario. The results show Shenyang metropolitan area has experienced large-scale urbanization, forming main UHI areas with Shenyang–Fushun, Liaoyang–Anshan, Fuxin as core. is expected become first for management future. produce hazards are mainly distributed D building-LCZs. By 2060, average UDS increase by 1.035 °C NDS 0.286 compared 2020. From perspective "historical future," provide theoretical reference continuous improvement environmental quality era, promoting coordinated actively responding change.

Language: Английский

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Urban Trees Expansion and Exposure Improvement in China: Insights From Satellite Observations (1985–2023)

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, Journal Year: 2024, Volume and Issue: 17, P. 9694 - 9705

Published: Jan. 1, 2024

Urban tree cover plays a pivotal role in bolstering the sustainability, livability, and resilience of cities. However, changes urban exposure under backdrop urbanization China remain unclear. This study investigates spatial distribution temporal trends expansion change from 1985 to 2023. Our findings highlight significant progress enhancing cover, with average Chinese areas reaching 11.9% 2023, representing remarkable 116% increase 5.5% 1985. this positive trend contrasts persistent deficiencies forest resources, as reflected by fact that cities was only 4.1% compared 0.1% Furthermore, our revealed substantial heterogeneity spatiotemporal variations cover. Only five exhibited decreasing during period, coastal demonstrating significantly higher inland Additionally, we observed rates decreased increasing latitude. Moreover, nationwide, there has been sustained accelerated improvement levels, 0.66% 7.45% 2020. Sixty-nine percent experienced while 1% negative changes. These offer valuable insights for policymakers, planners, stakeholders foster greener, more resilient, sustainable environments China.

Language: Английский

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Variation in community heat vulnerability for Shenyang City under local climate zone perspective

Building and Environment, Journal Year: 2024, Volume and Issue: unknown, P. 112242 - 112242

Published: Oct. 1, 2024

Language: Английский

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Dynamic Changes in Land Cover and Its Effect on Urban Heat Islands

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, Journal Year: 2023, Volume and Issue: 17, P. 2386 - 2395

Published: Dec. 14, 2023

Several studies have demonstrated that the urban heat island (UHI) impact is significantly influenced by changes in land cover (LC). In this study, we examined dynamic change LC Shijiazhuang city and its on UHI intensity using multisource data, including landsat data. The results showed 1) 15-year span exhibited a substantial growth built-up area from 14.541% to 19.718%, whereas cropland grassland dropped 3.342% 3.625%, respectively. 2) mean surface temperature (LST) study increased significantly. From point-to-plane distribution, high-temperature zone (>32 °C) grew, direction of was consistent with urbanization. 3) average barren areas highest, followed areas. 4) normalized difference vegetation index LST strong negative association, showing rises loss. Our research provide scientific basis for deeper understanding mechanisms underlying creation, as well developing logical use strategies evaluating effects urbanization local climates.

Language: Английский

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Towards ecological civilization: Spatiotemporal heterogeneity and drivers of ecological quality transitions in China (2001–2020)

Applied Geography, Journal Year: 2024, Volume and Issue: 173, P. 103439 - 103439

Published: Oct. 24, 2024

Language: Английский

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Identifying localized heat zones in urban heat islands from a hill and saddle perspective

Sustainable Cities and Society, Journal Year: 2024, Volume and Issue: unknown, P. 106028 - 106028

Published: Nov. 1, 2024

Language: Английский

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Evolution and Built-Up Age Dependency of Urban Thermal Environment

Remote Sensing, Journal Year: 2024, Volume and Issue: 16(9), P. 1495 - 1495

Published: April 24, 2024

The urban heat island (UHI) represents an anthropogenic modification to the earth’s surface, and its relationship with development, built-up age dependency in particular, is poorly understood. We integrated global artificial impervious areas analyze impacts of development intensity (UDI) on land surface temperatures (LSTs) Hefei, capital Anhui Province China, from 2000 2019. A key finding was that different ages were strongly associated LST, this does not change significantly over time, suggesting temporal stability spatial patterns LSTs. This puts forward a challenge application classic concept space-for-time LST studies because premise variation are equivalent. result reveals vital importance annual activities thermal environment. Another highlighted sensitivity UDI, effective measure impact urbanization which increased 0.255 °C per 10% UDI 0.818 UDI. more than doubling should be major concern for city administration. These findings have crucial theoretical practical significance regulation LSTs UHI.

Language: Английский

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