Water balance and net radiation in forest and pasture area in Southwest Amazon

Authors

DOI:

https://doi.org/10.5902/2236117039840

Keywords:

Evapotranspiration, Energy balance, Hydrological cycle

Abstract

Energy availability has direct influence over hydrological cycle, climate and preciptation. The determination of net radiation balance (Rn) and the spacial and temporal recognition of water availability allow establishing guidelines and planning the implementation of public resource management policies. The objective of this study was to analyze the water balance and net radiation balance of the year 2017 at two experimental sites in the state of Rondônia (RO), Brazil: an Amazon rainforest area located in the Jaru Biological Reserve (REBIO) and a pasture area (FNS) located in the municipality of Ouro Preto d’Oeste, near the forest área. The data were obtained from the REBIO climatological station, in the municipality of Ji-Paraná-RO, belonging to the experimental sites. Calculations for evapotranspiration potential were based on Thornthwaite and Mather’s method. The "Eddy Covariance" method was used to obtain the radiation balance. The forest system presented greater energy availability in the rainy season and higher evapotranspiration balance when compared to the pasture area. Water balance extract analysis pointed to water stress in pasture area, opposite to the forest area, which indicates that conversion of native forest to pasture is a process capable to compromise the availability of water resources and alter climatic aspects.

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Author Biographies

Camila Bermond Ruezzene, Center for Water Resources and Environmental Studies, University of São Paulo, São Carlos, SP

MSc Candidate of the Postgraduate Program in Environmental Engineering Sciences, Center for Water Resources and Environmental Studies, University of São Paulo, São Carlos, SP

Denise Parizotto, Center for Water Resources and Environmental Studies, University of São Paulo, São Carlos, SP

MSc Candidate of the Postgraduate Program in Environmental Engineering Sciences, Center for Water Resources and Environmental Studies, University of São Paulo, São Carlos, SP

Ana Carolina Cidin, Center for Water Resources and Environmental Studies, University of São Paulo, São Carlos, SP

PhD Candidate of the Postgraduate Program in Environmental Engineering Sciences, Center for Water Resources and Environmental Studies, University of São Paulo, São Carlos, SP

Thandy Junio da Silva Pinto, Center for Water Resources and Environmental Studies, University of São Paulo, São Carlos, SP

PhD Candidate of the Postgraduate Program in Environmental Engineering Sciences, Center for Water Resources and Environmental Studies, University of São Paulo, São Carlos, SP

Dayane de Oliveira, Center for Water Resources and Environmental Studies, University of São Paulo, São Carlos, SP

PhD Candidate of the Postgraduate Program in Environmental Engineering Sciences, Center for Water Resources and Environmental Studies, University of São Paulo, São Carlos, SP

Silvio Crestana, University of São Paulo, Embrapa Instrumentation, São Carlos, SP

PhD in Applied Physics, Postgraduate Program in Environmental Engineering Sciences Professor of University of São Paulo, Embrapa Instrumentation, São Carlos, SP

Renato Billia de Miranda, Center for Water Resources and Environmental Studies, University of São Paulo, São Carlos, SP

PhD in Environmental Engineering Sciences, Postgraduate Program in Environmental Engineering Sciences Professor of University of São Paulo, Center for Water Resources and Environmental Studies, University of São Paulo, São Carlos, SP

Frederico Fábio Mauad, Center for Water Resources and Environmental Studies, University of São Paulo, São Carlos, SP

PhD in Energy Systems Planning, Postgraduate Program in Environmental Engineering Sciences Professor of University of São Paulo, Center for Water Resources and Environmental Studies, University of São Paulo, São Carlos, SP

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Published

2019-09-26

How to Cite

Ruezzene, C. B., Parizotto, D., Cidin, A. C., Pinto, T. J. da S., Oliveira, D. de, Crestana, S., Miranda, R. B. de, & Mauad, F. F. (2019). Water balance and net radiation in forest and pasture area in Southwest Amazon. Revista Eletrônica Em Gestão, Educação E Tecnologia Ambiental, 23, e37. https://doi.org/10.5902/2236117039840

Issue

HYDROMETRY GROUP SPECIAL EDITION UNIVERSITY OF SÃO PAULO – SÃO CARLOS, SP

Section

SPECIAL EDITION

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