Multiple pathways regulation analysis of greenery index on outdoor comfort of residential areas in cold regions: a case study of Zhengzhou City

XUE Sihan, MA Yue, WANG Kun

JOURNAL OF NANJING FORESTRY UNIVERSITY ›› 2022, Vol. 46 ›› Issue (1) : 210-218.

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JOURNAL OF NANJING FORESTRY UNIVERSITY ›› 2022, Vol. 46 ›› Issue (1) : 210-218. DOI: 10.12302/j.issn.1000-2006.202102004

Multiple pathways regulation analysis of greenery index on outdoor comfort of residential areas in cold regions: a case study of Zhengzhou City

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Abstract

【Objective】 There has been increasing attention on the urban environment and the comfort of urban residents. High-quality urban residential greening can improve the microclimate and increase the utilization rate of space. This study explores the potential mechanism and regulatory approaches of greening on human comfort, clarifies differences between greenery indices, and proposes corresponding greening allocation strategies for residential planning and design in cold regions. 【Method】 The research area selected was the district of Zhengzhou, China. The microclimate of three typical residential areas in winter were measured, and a comfort survey was carried out. Through regression analysis, the quantitative relationship between two greenery indices (i.e., green view index and tree view factor) and comfort was established. This relationship clarifies the regulatory mechanism of greening on the microclimate and environmental comfort, the intermediary effect difference analysis was used to reveal the effect of the two ways. 【Result】 The regression analysis results showed that the green view index and tree view factor were significantly negatively correlated with comfort evaluation (b = -0.181, P < 0.01) and (b = -0.202, P < 0.01); the greenery indices had direct and indirect effects on comfort evaluation. There was a significant negative correlation between the two greenery indices and wind speed, and a significant positive correlation with other thermal environmental factors. Comfort had a significant positive correlation with wind speed evaluation and a significant negative correlation with other thermal environmental factors. Mediating effect analysis showed that the green view index mainly had an indirect effect of 76.7% and a direct effect of 23.3%, while the tree view factor mainly had an indirect effect of 87.9%, and its direct effect was not significant (P = 0.3953). 【Conclusion】 The two types of greenery indices represent greening structures from different perspectives. In the design and evaluation of greening spaces based on population and spatial preferences, the green view factor should be used as an indicator, while the tree view factor is more suitable to study microclimate adaptability.

Key words

tree view factor / green view index / regression analysis / mediating effect analysis / Zhengzhou City

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XUE Sihan , MA Yue , WANG Kun. Multiple pathways regulation analysis of greenery index on outdoor comfort of residential areas in cold regions: a case study of Zhengzhou City[J]. JOURNAL OF NANJING FORESTRY UNIVERSITY. 2022, 46(1): 210-218 https://doi.org/10.12302/j.issn.1000-2006.202102004

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