The potential of natural shade provided by Brazilian savanna trees for thermal comfort and carbon sink.

Autor: Teixeira BE; Faculty of Agronomy and Veterinary Medicine, University of Brasília, Darcy Ribeiro Campus, Brasília, Federal District 70910-900, Brazil., Nascimento ST; Faculty of Agronomy and Veterinary Medicine, University of Brasília, Darcy Ribeiro Campus, Brasília, Federal District 70910-900, Brazil; Innovation Group of Thermal Comfort and Animal Welfare (INOBIO - MANERA), State University of Maringá, Colombo Avenue, 5790, Maringá, Paraná 87020-900, Brazil. Electronic address: stnascimento@uem.br., Mós JVDN; Faculty of Agronomy and Veterinary Medicine, University of Brasília, Darcy Ribeiro Campus, Brasília, Federal District 70910-900, Brazil., de Oliveira EM; Animal Science Department, State University of Maringá, Colombo Avenue, 5790, Maringá, Paraná 87020-900, Brazil., Dos Santos VM; Federal Institute of Brasília, Planaltina Campus, DF 128 Road, km 21, Planaltina, Brasília 73380-900, Brazil., Maia ASC; Innovation Group of Thermal Comfort and Animal Welfare (INOBIO-MANERA), Biometeorology Laboratory, São Paulo State University, Prof. Paulo Donato Castellane Access Route w/n, Jaboticabal, São Paulo 14884-900, Brazil., Fonsêca VFC; Innovation Group of Thermal Comfort and Animal Welfare (INOBIO-MANERA), Biometeorology Laboratory, São Paulo State University, Prof. Paulo Donato Castellane Access Route w/n, Jaboticabal, São Paulo 14884-900, Brazil; Animal Biometeorology and Ethology Group (BIOET), Department of Animal Science, Federal University of Paraiba, PB-079 Road, 12, Areia, Paraíba 58397-000, Brazil., Passos BM; Faculty of Agronomy and Veterinary Medicine, University of Brasília, Darcy Ribeiro Campus, Brasília, Federal District 70910-900, Brazil., Murata LS; Faculty of Agronomy and Veterinary Medicine, University of Brasília, Darcy Ribeiro Campus, Brasília, Federal District 70910-900, Brazil.
Jazyk: angličtina
Zdroj: The Science of the total environment [Sci Total Environ] 2022 Nov 01; Vol. 845, pp. 157324. Date of Electronic Publication: 2022 Jul 14.
DOI: 10.1016/j.scitotenv.2022.157324
Abstrakt: This study looked at the potential of thermal comfort provided to animals by four different Brazilian savanna (Cerrado) native trees, as well as their potential for carbon sink. The evaluations were carried out during the summer of 2020, which consisted of the collection of microclimate variables. The Mean Radiant Temperature (TMR, °C) was derived from the shaded and unshaded areas under the trees, and from that, the Radiant Heat Load (RHL, W m -2 ) was calculated as an index of thermal comfort. Solar radiation was estimated considering the sum of the direct, diffuse, and reflected components (W m -2 ), and carbon stock from trees biomass for CO 2 sequestration was estimated from an allometric model applied to the native Cerrado tree species. The shade of the native trees reduced the meteorological variables such as dry bulb and black globe temperatures, to values considered adequate for the thermal comfort of animals, with an average reduction respectively equal to 1.3 °C and 6.4 °C. This represents a significant difference compared to the unshaded area as well as among tree species (P < 0.05), reflecting in lower values of TMR and RHL in the shaded area provided by each species. Carbon sequestration individually estimated by each native tree species was on average 8.85 Mg per tree. These results demonstrate the great potential for native tree species in the Cerrado biome to be used in agroforestry systems to provide higher levels of thermal comfort to animals and to combat climate change through their aptitude of CO 2 sink.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2022 Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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