The Impact of Greenspace on Thermal Comfort in a Residential Quarter of Beijing, China
| Autor: | Zhifeng Wu, Liding Chen, Ranhao Sun, Yening Wang, Fanhua Kong |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
China
010504 meteorology & atmospheric sciences Health Toxicology and Mutagenesis Climate Population Microclimate lcsh:Medicine Context (language use) 010501 environmental sciences Urban area Heat Stress Disorders residential quarter 01 natural sciences Article Beijing Environmental protection Urbanization ENVI-met Urban heat island education 0105 earth and related environmental sciences education.field_of_study geography geography.geographical_feature_category LAD lcsh:R Public Health Environmental and Occupational Health Temperature Thermal comfort urban heat island Plants thermal stress cooling effects of vegetation UTCI Environmental science Environment Design Seasons Erratum Body Temperature Regulation |
| Zdroj: | International Journal of Environmental Research and Public Health International Journal of Environmental Research and Public Health, Vol 13, Iss 12, p 1217 (2016) International Journal of Environmental Research and Public Health; Volume 13; Issue 12; Pages: 1217 |
| ISSN: | 1660-4601 1661-7827 |
| Popis: | With the process of urbanization, a large number of residential quarters, which is the main dwelling form in the urban area of Beijing, have been developed in last three decades to accommodate the rising population. In the context of intensification of urban heat island (UHI), the potential degradation of the thermal environment of residential quarters can give rise to a variety of problems affecting inhabitants' health. This paper reports the results of a numerical study of the thermal conditions of a residential quarter on a typical summertime day under four greening modification scenarios, characterized by different leaf area density (LAD) profiles. The modelling results demonstrated that vegetation could evidently reduce near-surface air temperature, with the combination of grass and mature trees achieving as much as 1.5 °C of air temperature decrease compared with the non-green scenario. Vegetation can also lead to smaller air temperature fluctuations, which contribute to a more stable microclimate. The Universal Thermal Climate Index (UTCI) was then calculated to represent the variation of thermal environment of the study area. While grass is helpful in improving outdoor thermal comfort, trees are more effective in reducing the duration and expansion of suffering from severe heat stress. The results of this study showed that proper maintenance of vegetation, especially trees, is significant to improving the outdoor thermal environment in the summer season. In consideration of the deficiency of the current code in the management of greenspace in residential areas, we hope the results reported here will help promote the improvement of the code and related regulations for greenspace management. |
| Databáze: | OpenAIRE |
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