Microclimatic Impact Analysis of Multi-Dimensional Indicators of Streetscape Fabric in the Medium Spatial Zone

Jiang, Yunfang; Han, Xuemei; Shi, Tiejun; Song, Danran

doi:10.3390/ijerph16060952

Cited by 13 publications

(5 citation statements)

References 54 publications

(66 reference statements)

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“…Through the analysis of CV value changes of three green corridor patterns, it can be seen that the fluctuation variation effect of air temperature with the various spatial types of green corridors at the holistic block level. The formula for calculating coefficient of variation is as follows [47]:…”

Section: The Thermal Variables For Describing Cooling Effectmentioning

confidence: 99%

Cooling Island Effect of Blue-Green Corridors: Quantitative Comparison of Morphological Impacts

Jiang

Huang

Shi

et al. 2021

IJERPH

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The patterns of green corridors in urban riverfront districts provide different synergistic cooling effects of blue-green space in urban areas. The purpose of this study is to quantify the spatial morphological impact of green corridors in riverfront block-scale area on the cooling effect. Three representative patterns (radiate, grid and dendritic) were selected in the study. The comprehensive influences analysis between multi-dimensional factors of spatial structure and morphology of green corridors and Ta (air temperature) distribution are processed by Envi-met4.4.5 simulation data and statistical analysis methods, such as regression tree model (BRT), were combined. The results showed that the D (distance from riverbank) has the greatest impact on the cooling effect of each belt green space. The D in the range of 600–750 m was affected by the cooling effect of blue-green space; The orientation with parallel to (southeast–northwest) or roughly the same as the prevailing wind direction (north–south) green corridors had relatively better cooling effect. When the width of green corridor was 20–25 m, the ME (marginal effect) of cooling was the largest; at 30–35 m (corridor width), the overall ME of cooling was the best; When the dPC (decreased probability connectivity, here the index was adapted to describe the connectivity degree) of green corridors was in the range of 0.5–1.5, the cooling effect of green corridor could be significantly improved. When dPC is 1.5, its marginal effect on temperature reached the maximum. The study provided a quantitative correlation technology for the morphological influence of blue-green space on the distribution of UCI (urban cooling island), which can guide the spatial layout control of green corridors in the planning and design of urban riverfront district.

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Section: The Thermal Variables For Describing Cooling Effectmentioning

confidence: 99%

Cooling Island Effect of Blue-Green Corridors: Quantitative Comparison of Morphological Impacts

Jiang

Huang

Shi

et al. 2021

IJERPH

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“…With reference to the research on the photosynthetic characteristics and configuration of various dominant tree species in Shanghai [35,60], and combined with the distribution of each tree species, Platanus, Robinia, Cinnamomum, Privet, and Metasequoia were selected, respectively, and were constructed according to the actual landscape composition. Many scholars have used ENVI-met to conduct microclimate studies and verified the validity of the simulation results [61][62][63][64]. In this study, the simulation results of ENVI-met were compared with the observed values to verify the validation of the software on CO 2 concentration.…”

Section: Envi-met Dynamic Simulationmentioning

confidence: 83%

Distribution of CO2 Concentration and Its Spatial Influencing Indices in Urban Park Green Space

Jiang

Liu

Yangshan

et al. 2023

Forests

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Park green spaces (PGSs) are an important component of urban natural carbon sinks, while their spatial morphological patterns can affect the carbon sequestration capacity themselves. This study selected six typical urban parks in the central district of Shanghai and analyzed the correlation between spatial morphological indices and CO2 concentration distribution of the PGSs based on ENVI-met and BRT models. It further explored the interaction mechanisms in the carbon cycling process of urban PGSs under the influence of different spatial morphology. The results shows that urban PGSs play the role of carbon sink in diurnal period, and the difference of CO2 concentration distribution in green space is the largest at 11 a.m. The green biomass (Gb) and arboreal area ratio (Ar) are the most important indices affecting the distribution of carbon concentration. The two indices describing spatial patterns, namely, Cohesion (Co) and canopy density (CanopyD) also significantly impact CO2 concentration. These indices have a positive impact on carbon sinks. The parkway area ratio (Pr) is a disturbing index that also has an obvious negative impact on the distribution of CO2 concentration. The moderate herbs area ratio (Hr) and open land area ratio (Or) are conducive to regulating the microclimate environment and enhancing carbon sink capacity. There is an interactive relationship between spatial indices and microclimate environment indices, as well as physical and physiological indices in the carbon sink process of green areas. The study suggested that in green space management aiming at carbon reduction, combined with the influence threshold of Gb on carbon reduction and paying attention to the importance of green amount on carbon sequestration, the vegetation density and allocation ratio should be rationally distributed to form a park green space landscape with efficient carbon fixation.

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“…The MAPEs of temperature and relative humidity are less than 10% (Chow et al, 2011;Salata et al, 2017). The Indexes of Agreement (d) are between 0.92-0.98, indicating that ENVI-met has a high simulation accuracy of outdoor temperature and relative humidity (Jiang et al, 2019).…”

Section: Envi-met Model Evaluationmentioning

confidence: 97%

Impacts of Water Bodies on Microclimates and Outdoor Thermal Comfort: Implications for Sustainable Rural Revitalization

Cheng

Liu

Zhang

et al. 2022

Front. Environ. Sci.

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Water is the source of life and the fundamental element of ecology, and climate is inseparable from water. To evaluate the influence of water-adaptive space in a traditional Weizi (polder village) settlement on its microclimate, the authors analyzed the morphological characteristics of such a polder village and applied the ENVI-met model to simulate the impact of water bodies and village morphological elements on human thermal comfort. This paper demonstrates the positive impact of water bodies on improving the thermal environment of a village and regulating its microclimate by quantifying the impact of morphological elements of the settlement on microclimate. The results indicate that: 1) The simulation model fits the actual measurements well, and the simulation accurately reflects experimental results; 2) In summer, the cooling effect of water bodies is better in the afternoon than in the morning, especially from 12:00 to 15:00. The cooling effect is significantly correlated with the distance to water bodies, i.e., the closer, the better; 3) Building density and man-made underlying surface are negatively correlated with temperature, humidity, and Physiological Equivalent Temperature value, while greening rate and water body rate are positively correlated with microclimate. Overall, water bodies can improve outdoor comfort in summer and thus should be protected and developed in rural planning and design. Villages can be built around water bodies for a maximized cooling effect, and microclimate comfort can be effectively improved by increasing green plants near the village center, and reducing man-made underlying surface and building density. The results of this study will guide the improvement of the habitat environment in the process of rural revitalization, as well as the protection and re-development of traditional villages.

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Microclimatic Impact Analysis of Multi-Dimensional Indicators of Streetscape Fabric in the Medium Spatial Zone

Cited by 13 publications

References 54 publications

Cooling Island Effect of Blue-Green Corridors: Quantitative Comparison of Morphological Impacts

Cooling Island Effect of Blue-Green Corridors: Quantitative Comparison of Morphological Impacts

Distribution of CO2 Concentration and Its Spatial Influencing Indices in Urban Park Green Space

Impacts of Water Bodies on Microclimates and Outdoor Thermal Comfort: Implications for Sustainable Rural Revitalization

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