Data/hora: 23/06/2024 04:28:15

Biblioteca(s): | Embrapa Agricultura Digital; Embrapa Agrossilvipastoril; Embrapa Arroz e Feijão; Embrapa Pecuária Sudeste.
Data corrente: | 16/09/2020
Data da última atualização: | 16/09/2020
Autoria: | MAGALHÃES, C. A. de S.; ZOLIN, C. A.; LULU, J.; LOPES, L. B.; FURTINI, I. V.; VENDRUSCULO, L. G.; ZAIATZ, A. P. S. R.; PEDREIRA, B. C. e; PEZZOPANE, J. R. M.
Afiliação: | CIRO AUGUSTO DE SOUZA MAGALHAES, CPAMT; CORNELIO ALBERTO ZOLIN, CPAMT; JORGE LULU, CPAMT; LUCIANO BASTOS LOPES, CPAMT; ISABELA VOLPI FURTINI, CNPAF; LAURIMAR GONCALVES VENDRUSCULO, CNPTIA; ANA PAULA SOUSA RODRIGUES ZAIATZ, UFMT, Sinop-MT; BRUNO CARNEIRO E PEDREIRA, CPAMT; JOSE RICARDO MACEDO PEZZOPANE, CPPSE.
Título: | Improvement of thermal comfort indices in agroforestry systems in the southern Brazilian Amazon.
Ano de publicação: | 2020
Fonte/Imprenta: | Journal of Thermal Biology, v. 91, n. 1, 102636, 2020.
ISSN: | 0306-4565
DOI: | https://doi.org/10.1016/j.jtherbio.2020.102636
Idioma: | Inglês
Conteúdo: | Agroforestry systems can minimize heat stress and improve cattle welfare, but the influence of the forest component in microclimatic changes in the southern Amazon remains unclear. This study aimed to compare the thermal comfort indices in grass monoculture and integrated systems. The three systems were pasture under full sunlight (PFS), integrated (triple-row) livestock-forestry (ILFT), and integrated (single-row) livestock-forestry (ILFs), across four seasons, for two years, from June 2017 to June 2019. We assessed photosynthetically active radiation (PAR), air temperature, relative humidity, black globe temperature, and wind speed. Thermal comfort indices such as temperature-humidity index (THI), black globe temperature-humidity index (BGHI), and radiant thermal load (RTL) were calculated based on microclimate data daily-collected from 8:00 to 16:00. The ILFT mean THI (76.8) was slightly lower than ILFS and PFS. The BGHI and RTL values decreased as shading increased (PFS > ILFs > ILFT). The most challenging heat stress conditions for grazing animals occurred predominately during winter and autumn. In conclusion, the presence of trees in pastures of the southern Amazon improved the microclimate and, consequently, the thermal comfort indices. Agroforestry systems can foster an environment with a more suitable thermal comfort or less restrictive to animal performance, which contribute to mitigating global climate change for forage-livestock systems in Brazilian Amazon.
Palavras-Chave: | Agrossilvipastoril; Conforto térmico; ILPF; Integração lavoura-pecuaria-floresta; Integrated crop-livestock-forest systems; Mato Grosso; Sinop-MT; Sistemas integrados.
Thesagro: | Floresta Tropical; Microclima; Stress.
Thesaurus Nal: | Agroforestry; Animal husbandry; Farming systems; Heat stress; Integrated agricultural systems; Integrated crop management; Microclimate; Tropical agriculture; Tropical forests; Tropical grasslands; Tropical pastures.
Categoria do assunto: | P Recursos Naturais, Ciências Ambientais e da Terra
Registro original: | Embrapa Agrossilvipastoril (CPAMT)

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