Examining water bodies' cooling effect in urban parks with buffer analysis and random forest regression

Urban Climate, Journal Year: 2025, Volume and Issue: 59, P. 102301 - 102301

Published: Jan. 30, 2025

Language: Английский

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Sensing-based park cooling performance observation and assessment: A review

Building and Environment, Journal Year: 2023, Volume and Issue: 245, P. 110915 - 110915

Published: Oct. 10, 2023

Language: Английский

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Evaluating Cooling Effect of Blue-green Infrastructure on Urban Thermal Environment in a Metropolitan City: Using Geospatial and Machine Learning Techniques

Sustainable Cities and Society, Journal Year: 2024, Volume and Issue: 113, P. 105666 - 105666

Published: July 14, 2024

Language: Английский

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Parks may not be effective enough to improve the thermal environment in Shanghai (China) as our modified H3SFCA method suggests

Building and Environment, Journal Year: 2024, Volume and Issue: 253, P. 111291 - 111291

Published: Feb. 15, 2024

Language: Английский

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Linking maximum-impact and cumulative-impact indices to quantify the cooling effect of waterbodies in a subtropical city: A seasonal perspective

Sustainable Cities and Society, Journal Year: 2022, Volume and Issue: 82, P. 103902 - 103902

Published: April 16, 2022

Language: Английский

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Quantification of the Cooling Effect and Cooling Distance of Urban Green Spaces Based on Their Vegetation Structure and Size as a Basis for Management Tools for Mitigating Urban Climate

Sustainability, Journal Year: 2023, Volume and Issue: 15(4), P. 3705 - 3705

Published: Feb. 17, 2023

The urban climate is receiving increased attention mainly due to change. There are several ways mitigate the climate, but green spaces have an advantage over other cooling systems because, in addition their function, they provide ecosystem services that enhance sustainability of systems. effect varies depending on species composition, structure vegetation, size and shape or specific characteristics plants. Therefore, exact quantification space’s critical importance order be effectively applied planning as a measure change adaptation. In this paper, we quantified difference between vegetation (grass versus trees) size, assessed what distance from space its can observed. Urban were identified using Landsat orthophotomosaic airborne laser scanning. temperature was calculated land surface (LST) data single-channel method. To quantify differences magnitude edge which occurs, used one-way analysis variance regression analyses. Our results show intensity, well distance, dependent space. most significant provided by large tree spaces, where intensity (difference LST compared area without vegetation) almost 4.5 °C average (maximum 6 °C) up 90 m (less significantly 180 m). Large grass medium similar effects, with higher (2.9 2.5 average) however, extends greater (up m) for only 30–60 m. Small areas trees small below 2 °C.

Language: Английский

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Seasonal impacts of built environment and its interactions on urban park cooling effects in Nanjing, China

Building and Environment, Journal Year: 2023, Volume and Issue: 242, P. 110580 - 110580

Published: July 3, 2023

Language: Английский

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Quantifying and Comparing the Cooling Effects of Three Different Morphologies of Urban Parks in Chengdu

Land, Journal Year: 2023, Volume and Issue: 12(2), P. 451 - 451

Published: Feb. 10, 2023

Urban parks have significant cooling effects, which can both mitigate the urban heat is-land effect and are crucial to sustainable development of human habitat. Although studies been conducted explore influence park morphology on parks, they not sufficiently in depth. Therefore, this paper took 117 central city Chengdu as research objects based perspective quantitative classification morphology. Then, remote sensing interpretation, spatial statistics, regression analysis were used, four indicators intensity, distance, area, efficiency integrated different morphological types parks. The results show that (1) could be divided into five categories, among round was best, 0.7. (2) In terms parks’ area perimeter thresholds 30 ha 4000 m, respectively. (3) When reached 70 3000 respectively, increase distance slowed down. (4) best when shape index (indicating complexity boundaries) 2.8. study provide theoretical support for intensive use green space help construction promotion a beautiful livable Chengdu.

Language: Английский

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Soil texture mediates the surface cooling effect of urban and peri-urban green spaces during a drought period in the city area of Hamburg (Germany)

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 897, P. 165228 - 165228

Published: July 5, 2023

Urban green spaces (UGS) and peri-urban (P-UGS) play a crucial role in reducing the land surface temperature within urban environment, especially during heat waves. Although their cooling effect generally is due to shading evaporation, of soil texture water availability on remains largely unexplored. This study investigated impact spatio-temporal patterns LST different UGSs P-UGSs Hamburg (Germany) hot summer drought period. The Normalized Differentiated Moisture Vegetation Indices (NDMI, NDVI) were calculated based two Landsat 8 OLI/TIRS images from July 2013. Non-spatial spatial statistical approaches such as stepwise backward regression or Hotspot (Getis-Ord Gi*) analyses applied explaining distributions relation each UGS P-UGS. All GSs clearly characterized islands whereas, for GS, an individual thermal footprint was observed. Within all GSs, showed significant negative relationship NDMI values, whereas NDVI values elevation minor importance. Soil found influence distribution significantly most P-UGSs, where sites clay-rich soils highest compared sand- silt-rich soils. For example, parks, clayey mean 25.3 °C sand-dominated had only 23.1 °C. consistent throughout approaches, both dates across GSs. unexpected result explained by very low unsaturated hydraulic conductivity which limits plant uptake transpiration rates responsible evaporative effect. We concluded that has be considered understanding managing capacity P-UGSs.

Language: Английский

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Analysis of the spillover characteristics of cooling effect in an urban park: A case study in Zhengzhou city

Frontiers in Earth Science, Journal Year: 2023, Volume and Issue: 11

Published: Feb. 28, 2023

Urban parks include water bodies, non-hardened ground, and a variety of vegetation, whose shading evaporation effects form “park cold island.” A park effectively cools the surrounding environment through heat exchange. This phenomenon is called spillover cooling effect (PCS) plays an important role in regulating microclimate cities. Although PCS was extensively documented previous studies, landscape features on still need to be further explored, especially China with rapid urban expansion. The severe scarcity land resources heightens necessity clarify relationship between patch size efficiency. Therefore, this study, we chose Zhengzhou city (the capital Henan province, central region China) as example, which has experienced expansion population high spatiotemporal aggregation heatwaves–drought–rainstorms. We used Landsat 8 imagery score data summer 2019 retrieve characteristics surface temperature (LST), then extracted 36 identified distance (PCS D ), strength S rate R 11 indexes. calculated area threshold when achieves highest efficiency, each also were quantified. results showed that average LST 2.3°C lower than entire study area; 4.61°C at maximum; 31 370 m, value 179 m; 0.957°C/100 m. For indexes, found (AREA), green space (AREA g perimeter (PERIM) contributed most PCS. Shape impervious (LSI i ) percentage body (P w significantly ratio (PARA), edge density (ED), (ED (PD) negatively correlated PCS, result 6–8 ha internal not less 5–6 effect. can expand our scientific understanding influences provide basis for formulating reasonable effective spatial layout planning cope island

Language: Английский

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