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A single tree model to consistently simulate cooling, shading, and pollution uptake of urban trees

Pace, Rocco; De Fino, Francesco; Rahman, Mohammad A.; Pauleit, Stephan; Nowak, David J.; Grote, Rüdiger

Abstract:
Extremely high temperatures, which negatively affect the human health and plant performances, are becoming more frequent in cities. Urban green infrastructure, particularly trees, can mitigate this issue through cooling due to transpiration, and shading. Temperature regulation by trees depends on feedbacks among the climate, water supply, and plant physiology. However, in contrast to forest or general ecosystem models, most current urban tree models still lack basic processes, such as the consideration of soil water limitation, or have not been evaluated sufficiently. In this study, we present a new model that couples the soil water balance with energy calculations to assess the physiological responses and microclimate effects of a common urban street-tree species (Tilia cordata Mill.) on temperature regulation. We contrast two urban sites in Munich, Germany, with different degree of surface sealing at which microclimate and transpiration had been measured. Simulations indicate that differences in wind speed and soil water supply can be made responsible for the differences in transpiration. Nevertheless, the calculation of the overall energy balance showed that the shading effect, which depends on the leaf area index and canopy cover, contributes the most to the temperature reduction at midday. ... mehr


Verlagsausgabe §
DOI: 10.5445/IR/1000125527
Veröffentlicht am 02.11.2020
Originalveröffentlichung
DOI: 10.1007/s00484-020-02030-8
Scopus
Zitationen: 5
Dimensions
Zitationen: 5
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Meteorologie und Klimaforschung - Atmosphärische Umweltforschung (IMK-IFU)
KIT-Zentrum Klima und Umwelt (ZKU)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2021
Sprache Englisch
Identifikator ISSN: 0020-7128, 1432-1254
KITopen-ID: 1000125527
HGF-Programm 12.02.04 (POF III, LK 01) Urban-Rural Interactions
Erschienen in International journal of biometeorology
Verlag Springer
Band 65
Heft 2
Seiten 277 - 289
Vorab online veröffentlicht am 18.10.2020
Schlagwörter Microclimate model, Transpiration, Shading, Stomatal conductance, Soil water availability, Urban green spaces
Nachgewiesen in Scopus
PubMed
Dimensions
Web of Science
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