Observation and modeling of greenhouse gases emissions (CO2, CH4 and N2O) in a sugarcane plantation

• Grant number: 14/24452-0
• Support Opportunities: Program for Research on Bioenergy (BIOEN) - Regular Program Grants
• Start date: October 01, 2015
• End date: September 30, 2017
• Field of knowledge: Physical Sciences and Mathematics - Geosciences - Meteorology
• Principal Investigator: Osvaldo Machado Rodrigues Cabral
• Grantee: Osvaldo Machado Rodrigues Cabral
• Host Institution: Embrapa Meio-Ambiente. Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA). Jaguariúna , SP, Brazil
• City of the host institution: Jaguariúna
• Associated researchers: Adriana Marlene Moreno Pires ; Ana Paula Contador Packer ; Cristiano Alberto de Andrade ; Helber Custódio de Freitas ; Humberto Ribeiro da Rocha ; Marcelo Valadares Galdos ; Nilza Patrícia Ramos ; Ricardo de Oliveira Figueiredo ; Santiago Vianna Cuadra

Abstract

Continuous measurements of water vapor fluxes and greenhouse gases (GHG): methane (CH4), nitrous oxide (N2) and carbon dioxide (CO2), will be conducted above a commercial sugarcane plantation harvested without burning (Pirassununga, SP) during two years. The fluxes will be continuously measured by the eddy covariance method which has high temporal resolution (30 min) and is capable to represent several hectares of vegetation around the measuring point. The molar fractions of CH4 and N2O will be analyzed by a closed-path Quantum Cascade Laser Absorption Spectrometer (QCLAS) and the CO2 and water vapor fluxes by an open-path infrared gas analyzer.The data set generated will be utilized to evaluate the water and carbon balances between the plantation and the atmosphere in order to verify whether the agro-ecosystem is a source or sink of GHG. Additionally, process-based models calibrated by this dataset will be used to simulate fluxes in the soil/plant/atmosphere interface. The quantification of fluxes is necessary to understand the dynamics of the biogeochemical processes, contributing for the assessment of management practices, land use changes and potential mitigating measures in the context of the climate changes. (AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

CABRAL, OSVALDO M. R.; FREITAS, HELBER CUSTODIO; CUADRA, SANTIAGO VIANA; DE ANDRADE, CRISTIANO ALBERTO; RAMOS, NILZA PATRICIA; GRUTZMACHER, PRISCILA; GALDOS, MARCELO; CONTADOR PACKER, ANA PAULA; DA ROCHA, HUMBERTO RIBEIRO; ROSSI, PAULO. The sustainability of a sugarcane plantation in Brazil assessed by the eddy covariance fluxes of greenhouse gases. Agricultural and Forest Meteorology, v. 282, MAR 15 2020. (14/24452-0, 14/50715-9)