Improvement of thermal comfort indices in agroforestry systems in the southern Brazilian Amazon
| العنوان: | Improvement of thermal comfort indices in agroforestry systems in the southern Brazilian Amazon |
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| المؤلفون: | Luciano Bastos Lopes, Laurimar Gonçalves Vendrusculo, José Ricardo Macedo Pezzopane, Ciro Augusto de Souza Magalhães, Cornélio Alberto Zolin, Jorge Lulu, Ana Paula Sousa Rodrigues Zaiatz, Bruno Carneiro e Pedreira, I. V. Furtini |
| المصدر: | Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual) Universidade de São Paulo (USP) instacron:USP |
| بيانات النشر: | Elsevier BV, 2020. |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | 0106 biological sciences, Physiology, 030310 physiology, Wet-bulb globe temperature, Microclimate, Forests, Global Warming, SOMBREAMENTO, 010603 evolutionary biology, 01 natural sciences, Biochemistry, 03 medical and health sciences, Grazing, Animals, Tropical Climate, 0303 health sciences, Amazon rainforest, Agroforestry, Temperature, Thermal comfort, Agriculture, Humidity, Photosynthetically active radiation, Environmental science, Cattle, Seasons, Shading, Monoculture, General Agricultural and Biological Sciences, Brazil, Body Temperature Regulation, Developmental Biology |
| الوصف: | 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. |
| تدمد: | 0306-4565 |
| DOI: | 10.1016/j.jtherbio.2020.102636 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a612233583be2396e1c4f49278900231 https://doi.org/10.1016/j.jtherbio.2020.102636 |
| Rights: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....a612233583be2396e1c4f49278900231 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 03064565 |
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| DOI: | 10.1016/j.jtherbio.2020.102636 |