Tree Transpiration and Urban Temperatures: Current Understanding, Implications, and Future Research Directions
| Autor: | Joy B. Winbourne, Jamie L. Harrison, Sarah M Garvey, Dan Li, Pamela H. Templer, Taylor Jones, Lucy R. Hutyra, Liang Wang |
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| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
010504 meteorology & atmospheric sciences Ecology (disciplines) Climate change Heat wave Atmospheric sciences 010603 evolutionary biology 01 natural sciences Environmental science Current (fluid) General Agricultural and Biological Sciences Biological sciences 0105 earth and related environmental sciences Transpiration Tree transpiration |
| Zdroj: | BioScience. 70:576-588 |
| ISSN: | 1525-3244 0006-3568 |
| DOI: | 10.1093/biosci/biaa055 |
| Popis: | The expansion of an urban tree canopy is a commonly proposed nature-based solution to combat excess urban heat. The influence trees have on urban climates via shading is driven by the morphological characteristics of trees, whereas tree transpiration is predominantly a physiological process dependent on environmental conditions and the built environment. The heterogeneous nature of urban landscapes, unique tree species assemblages, and land management decisions make it difficult to predict the magnitude and direction of cooling by transpiration. In the present article, we synthesize the emerging literature on the mechanistic controls on urban tree transpiration. We present a case study that illustrates the relationship between transpiration (using sap flow data) and urban temperatures. We examine the potential feedbacks among urban canopy, the built environment, and climate with a focus on extreme heat events. Finally, we present modeled data demonstrating the influence of transpiration on temperatures with shifts in canopy extent and irrigation during a heat wave. |
| Databáze: | OpenAIRE |
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