Silvopastoral system with Eucalyptus as a strategy for mitigating the effects of climate change on Brazilian pasturelands

Autor(es)

Bosi, Cristiam ^[1] ; Pezzopane, Jose Ricardo M. ^[2] ; Sentelhas, Paulo Cesar ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, ESALQ, Av Padua Dias 11, BR-13418900 Piracicaba, SP - Brazil

^[2] Embrapa Pecuaria Sudeste, Rodovia Washington Luiz, Km 234, Caixa Postal 339, BR-13563776 Sao Carlos, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Anais da Academia Brasileira de Ciências; v. 92, n. 1 JAN 2020.
• Citações Web of Science: 0

Resumo

The aim of the present study was to assess the effect of Eucalyptus trees in a silvopastoral system on the microclimate and the capacity of that to mitigate the effects of climate change on pasturelands. This study included an open pasture of Plata palisadegrass and an adjacent pasture that contained both palisadegrass and Eastto-West rows of Eucalyptus trees, with 15 m between rows, 2 m between trees within rows. The micrometeorological measurements were collected at several distances from the tree rows and in the open pasture. The silvopastoral system was associated with greater between-row shading when solar declination was high and greater near-tree shading when solar declination was around -22 degrees. Both soil heat flux and temperature were influenced by solar radiation, wind speed, and the ability of tree canopies to reduce radiation losses. Wind speed was consistently lower in the silvopastoral system, owing to the windbreak effect of the Eucalyptus trees. The present study demonstrated that silvopastoral systems can be used to attenuate the effects of climate change, as trees can protect pastureland from intense solar radiation and wind, thereby reducing evapotranspiration and, consequently, improving soil water availability for the understory crop. (AU)

• Processo FAPESP: 14/11931-8 - Parametrização e avaliação de modelos mecanísticos para estimativa da produtividade de Urochloa brizantha cv. Piatã em sistema silvipastoril
• Beneficiário: Cristiam Bosi
• Modalidade de apoio: Bolsas no Brasil - Doutorado