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Study of the effect of green quantity and structure on thermal comfort and air quality in an urban-like residential district by ENVI-met modelling

  • Liyan Rui
  • Riccardo Buccolieri
  • Zhi Gao
  • Elisa Gatto
  • Wowo Ding
Research Article
  • 21 Downloads

Abstract

This study quantifies the influence of green spaces on microclimate and PM10 concentration in a typical residential district of Nanjing (China) by employing the CFD-based and microclimate model ENVI-met 4. Five green indices, related to quantity and structure of vegetation, are employed to investigate the impact of different types (grass, shrub and tree) and layouts of a green space located in the center of the residential district under an average Nanjing summer day. Results show that the thermal comfort (expressed by the mean radiant temperature MRT and the predicted mean vote PMV) is slightly enhanced with increasing green quantity, especially trees, even though more trees may increase the wind blocking effect with a consequent slight increase of pollutant concentration. In this regard, a single patch of trees located in the central part of the green space is preferable. The green indices are shown to be useful for studying the relationship between green space morphology, microclimate and air quality in cities.

Keywords

residential district ENVI-met green indices PM10 thermal comfort 

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Notes

Acknowledgements

The research was supported by the key project funded by the National Science Foundation of China on “Urban form-microclimate coupling mechanism and control”, Grant No. 51538005.

References

  1. Abhijith KV, Kumar P, Gallagher J, McNabola A, Baldauf R, Pilla F, Broderick B, Di Sabatino S, Pulvirenti B (2017). Air pollution abatement performances of green infrastructure in open road and built-up street canyon environments—A review. Atmospheric Environment, 162: 71–86.CrossRefGoogle Scholar
  2. ASHRAE (2004). Standard 55. Thermal Environmental Conditions for Human Occupancy. Atlanta: American Society of Heating, Refrigerating and Air-Conditioning Engineers.Google Scholar
  3. Blocken B (2014). 50 years of Computational Wind Engineering: Past, present and future. Journal of Wind Engineering and Industrial Aerodynamics, 129: 69–102.CrossRefGoogle Scholar
  4. Bruse M, Fleer H (1998). Simulating surface–plant–air interactions inside urban environments with a three dimensional numerical model. Environmental Modelling and Software, 13: 373–384.CrossRefGoogle Scholar
  5. Buccolieri R, Santiago J-L, Rivas E, Sanchez B (2018a). Review on urban tree modelling in CFD simulations: Aerodynamic, deposition and thermal effects. Urban Forestry & Urban Greening, 31: 212–220.CrossRefGoogle Scholar
  6. Buccolieri R, Jeanjean APR, Gatto E, Leigh RJ (2018b). The impact of trees on street ventilation, NOx and PM2.5 concentrations across heights in Marylebone Rd street canyon, central London. Sustainable Cities and Society, 41: 227–241.CrossRefGoogle Scholar
  7. Chen J, Zhu L, Fan P, Tian L, Lafortezza R (2016). Do green spaces affect the spatiotemporal changes of PM2.5 in Nanjing? Ecological Processes, 5: 7.CrossRefGoogle Scholar
  8. Chow WTL, Brazel AJ (2012). Assessing xeriscaping as a sustainable heat island mitigation approach for a desert city. Building and Environment, 47: 170–181.CrossRefGoogle Scholar
  9. Deng JY, Wong NH, Zheng X (2016). The study of the effects of building arrangement on microclimate and energy demand of CBD in Nanjing, China. Procedia Engineering, 169: 44–54.CrossRefGoogle Scholar
  10. Di Sabatino S, Buccolieri R, Kumar P (2018). Spatial distribution of air pollutants in cities. In: Capello F, Gaddi A (eds), Clinical Handbook of Air Pollution-Related Diseases. Cham, Switzerland: Springer.Google Scholar
  11. Fahmy M, Ibrahim Y, Hanafi E, Barakat M (2018). Would LEED-UHI greenery and high albedo strategies mitigate climate change at neighborhood scale in Cairo, Egypt? Building Simulation, 11: 1273–1288.CrossRefGoogle Scholar
  12. Fanger PO (1970). Thermal Comfort: Analysis and Applications in Environmental Engineering. Copenhagen: Danish Technical Press.Google Scholar
  13. Forouzandeh A (2018). Numerical modeling validation for the microclimate thermal condition of semi-closed courtyard spaces between buildings. Sustainable Cities and Society, 36: 327–345.CrossRefGoogle Scholar
  14. Herath HMPIK, Halwatura RU, Jayasinghe GY (2018). Evaluation of green infrastructure effects on tropical Sri Lankan urban context as an urban heat island adaptation strategy. Urban Forestry & Urban Greening, 29: 212–222.CrossRefGoogle Scholar
  15. Hu W, Zhong Q (2009). A study on PM10 emission factor of motor vehicle by tunnel test in Nanjing city. Chinese Journal of Environmental Engineering, 2009(10): 1852–1855. (in Chinese)Google Scholar
  16. Huttner S (2012). Further develop and application of the 3D microclimate simulation ENVI-met. PhD Thesis, Johannes Gutenberg-University in Mainz, Germany.Google Scholar
  17. Huang L, Zhao D, Wang J, Zhu J, Li J (2008). Scale impacts of land cover and vegetation corridors on urban thermal behavior in Nanjing, China. Theoretical and Applied Climatology, 94: 241–257.CrossRefGoogle Scholar
  18. Janhäll S (2015). Review on urban vegetation and particle air pollution—Deposition and dispersion. Atmospheric Environment, 105: 130–137.CrossRefGoogle Scholar
  19. Jendritzky G, Nübler W (1981). A model analysing the urban thermal environment in physiologically significant terms. Archives for Meteorology, Geophysics, and Bioclimatology, Series B, 29: 313–326.CrossRefGoogle Scholar
  20. Karakounos I, Dimoudi A, Zoras S (2018). The influence of bioclimatic urban redevelopment on outdoor thermal comfort. Energy and Buildings, 158: 1266–1274.CrossRefGoogle Scholar
  21. Katsoulas N, Antoniadis D, Tsirogiannis IL, Labraki E, Bartzanas T, Kittas C (2017). Microclimatic effects of planted hydroponic structures in urban environment: measurements and simulations. International Journal of Biometeorology, 61: 943–956.CrossRefGoogle Scholar
  22. Kong F, Sun C, Liu F, Yin H, Jiang F, Pu Y, Cavan G, Skelhorn C, Middel A, Dronova I (2016). Energy saving potential of fragmented green spaces due to their temperature regulating ecosystem services in the summer. Applied Energy, 183: 1428–1440.CrossRefGoogle Scholar
  23. Lalic B, Mihailovic DT (2004). An empirical relation describing leaf-area density inside the forest for environmental modelling. Journal of Applied Meteorology, 43: 641–645.CrossRefGoogle Scholar
  24. Lateb M, Meroney R.N, Yataghene M, Fellouah H, Saleh F, Boufadel MC (2016). On the use of numerical modelling for near-field pollutant dispersion in urban environments—A review. Environmental Pollution, 208: 271–283.CrossRefGoogle Scholar
  25. Lee H, Mayer H (2018a). Thermal comfort of pedestrians in an urban street canyon is affected by increasing albedo of building walls. International Journal of Biometeorology, 62: 1199–1209.CrossRefGoogle Scholar
  26. Lee H, Mayer H (2018b). Maximum extent of human heat stress reduction on building areas due to urban greening. Urban Forestry & Urban Greening, 32: 154–167.CrossRefGoogle Scholar
  27. Li J, Wang J, Wong NH (2016). Urban micro-climate research in high density cities: Case study in Nanjing. Procedia Engineering, 169: 88–99.CrossRefGoogle Scholar
  28. Lin X (2007). Green Building: Ecology, Energy Saving, Waste Reduction, Health. Beijing: Architecture & Building Press: Beijing, China. (in Chinese)Google Scholar
  29. Liu F, Qian H, Zheng X, Zhang L, Liang W (2017). Numerical study on the urban ventilation in regulating microclimate and pollutant dispersion in urban street canyon: A case study of Nanjing New Region, China. Atmosphere, 8: 164.CrossRefGoogle Scholar
  30. Livesley SJ, McPherson GM, Calfapietra C (2016). The urban forest and ecosystem services: Impacts on urban water, heat, and pollution cycles at the tree, street, and city scale. Journal of Environmental Quality, 45: 119–124.CrossRefGoogle Scholar
  31. Lu J, Li Q, Zeng L, Chen J, Liu G, Li Y, Li W, Huang K (2017). A micro-climatic study on cooling effect of an urban park in a hot and humid climate. Sustainable Cities and Society, 32: 513–522.CrossRefGoogle Scholar
  32. Matzarakis A, Rutz F, Mayer H (2007). Modelling radiation fluxes in simple and complex environments—Application of the RayMan model. International Journal of Biometeorology, 51: 323–334.CrossRefGoogle Scholar
  33. Perini K, Magliocco A (2014). Effects of vegetation, urban density, building height, and atmospheric conditions on local temperatures and thermal comfort. Urban Forestry & Urban Greening, 13: 495–506.CrossRefGoogle Scholar
  34. Rui L, Buccolieri R, Gao Z, Ding W, Shen J (2018). The impact of green space layouts on microclimate and air quality in residential districts of Nanjing, China. Forests, 9: 224.CrossRefGoogle Scholar
  35. Salata F, Golasi I, Vollaro E. D. L, Bisegna F, Nardecchia F, Coppi M, Gugliermetti F, Vollaro ADL (2015). Evaluation of different urban microclimate mitigation strategies through a PMV analysis. Sustainability, 7: 9012–9030.CrossRefGoogle Scholar
  36. Salmond JA, Tadaki M, Vardoulakis S, Arbuthnott K, Coutts A, Demuzere M, Dirks KN, Heaviside C, Lim S, Macintyre H, McInnes RN, Wheeler BW (2016). Health and climate related ecosystem services provided by street trees in the urban environment. Environmental Health, 15(Suppl. 1): 36.CrossRefGoogle Scholar
  37. Santiago J-L, Rivas E, Sanchez B, Buccolieri R, Martin F (2017). The impact of planting trees on NOx concentrations: The case of the Plaza de la Cruz neighborhood in Pamplona (Spain). Atmosphere, 8(7): 131CrossRefGoogle Scholar
  38. Sharmin T, Steemers K, Matzarakis A (2017). Microclimatic modelling in assessing the impact of urban geometry on urban thermal environment. Sustainable Cities and Society, 34: 293–308.CrossRefGoogle Scholar
  39. Shen J, Gao Z, Ding W, Yu Y (2017). An investigation on the effect of street morphology to ambient air quality using six real-world cases. Atmospheric Environment, 164: 85–101.CrossRefGoogle Scholar
  40. Sodoudi S, Zhang H, Chi X, Müller F, Li H (2018). The influence of spatial configuration of green areas on microclimate and thermal comfort. Urban Forestry & Urban Greening, 34: 85–96.CrossRefGoogle Scholar
  41. Toparlar Y, Blocken B, Maiheu B, van Heijst GJF (2017). A review on the CFD analysis of urban microclimate. Renewable Sustainable Energy Reviews, 80: 1613–1640.CrossRefGoogle Scholar
  42. Tseliou A, Tsiros IX (2016). Modeling urban microclimate to ameliorate thermal sensation conditions in outdoor areas in Athens (Greece). Building Simulation, 9: 251–267.CrossRefGoogle Scholar
  43. Tsoka S, Tsikaloudaki A, Theodosiou T (2018). Analyzing the ENVI-met microclimate model’s performance and assessing cool materials and urban vegetation applications—A review. Sustainable Cities and Society, 43: 55–76.CrossRefGoogle Scholar
  44. Van den Berg M, Wendel-Vos W, van Poppel M, Kemper H, van Mechelen W, Maas J (2015). Health benefits of green spaces in the living environment: A systematic review of epidemiological studies. Urban Forestry & Urban Greening, 14: 806–816.CrossRefGoogle Scholar
  45. Yahia MW, Johansson E, Thorsson S, Lindberg F, Rasmussen MI (2018). Effect of urban design on microclimate and thermal comfort outdoors in warm-humid Dar es Salaam, Tanzania. International Journal of Biometeorology, 62: 373–385.CrossRefGoogle Scholar
  46. Zhang Y, Du X, Shi Y (2017). Effects of street canyon design on pedestrian thermal comfort in the hot-humid area of China. International Journal of Biometeorology, 61: 1421–1432.CrossRefGoogle Scholar
  47. Zhao Q, Sailor DJ, Wentz EA (2018). Impact of tree locations and arrangements on outdoor microclimates and human thermal comfort in an urban residential environment. Urban Forestry & Urban Greening, 32: 81–91.CrossRefGoogle Scholar
  48. Zhang X, Zhang Y, Zang Q, Yu M, Tong Z (2016). Comparative cognition of microclimate of different types of open spaces. In: Proceedings of the 24th International Conference on Geoinformatics, Galway, Ireland.Google Scholar

Copyright information

© Tsinghua University Press and Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  • Liyan Rui
    • 1
  • Riccardo Buccolieri
    • 2
  • Zhi Gao
    • 1
  • Elisa Gatto
    • 2
  • Wowo Ding
    • 1
  1. 1.School of Architecture and Urban PlanningNanjing UniversityNanjingChina
  2. 2.Dipartimento di Scienze e Tecnologie Biologiche ed AmbientaliUniversity of SalentoLecceItaly

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