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Type: Journal Article
Author(s): Gabriel de Oliveira; Nathaniel A. Brunsell; Jing M. Chen; Yosio E. Shimabukuro; Guilherme Augusto Verola Mataveli; Carlos A.C. dos Santos; Scott C. Stark; Andre de Lima; Luiz E. O. C. Aragão
Publication Date: 2021

The ongoing deforestation process in Amazonia has led to intensified forest fires in the region, particularly in Brazil, after more than a decade of effective forest conservation policy. This study aims to investigate the recovery of two mature sub‐montane ombrophile Amazonian forests affected by fire in terms of energy, water and carbon fluxes utilizing remote sensing (MODIS) and climate reanalysis data (GLDAS). These two forest plots, mainly composed of Manilkara spp. (Maçaranduba), Protium spp. (Breu) (∼30 m), Bertholletia excelsa (Castanheira) and Dinizia excelsa Ducke (Angelim‐Pedra) (∼50 m), occupy areas of 100.5 km2 and 122.1 km2 and were subject to fire on the same day, on September 12, 2010. The fire significantly increased land surface temperature (0.8 °C) and air temperature (1.2 °C) in the forests over a three years interval. However, the forests showed an ability to recover their original states in terms of coupling between the carbon and water cycles comparing the three‐year periods before and after the fires. Results from a wavelet analysis showed an intensification in annual and seasonal fluctuations, and in some cases (e.g., daily net radiation and evapotrasnspiration) sub‐annual fluctuation. We interpreted these changes to be consistent with overall intensification of the coupling of energy balance components and drivers imposed by climate and solar cycle seasonality, as well as faster time scale changes, consistent with a shift towards greater forest openness and consequent reduction in the interception of incoming solar radiation by the canopy.

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Citation: de Oliveira, Gabriel; Brunsell, Nathaniel A.; Chen, Jing M.; Shimabukuro, Yosio E.; Mataveli, Guilherme A. V.; dos Santos, Carlos A. C.; Stark, Scott C.; de Lima, Andre; Aragao, Luiz E. O. C. 2021. Legacy effects following fire on surface energy, water and carbon fluxes in mature Amazonian forests. Journal of Geophysical Research: Biogeosciences 126(5):e2020JG005833.

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Topics:
Regions:
Keywords:
  • Amazonia
  • Brazil
  • carbon flux
  • MODIS - Moderate Resolution Imaging Spectroradiometer
  • post-fire recovery
  • remote sensing
  • water cycle
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Record Maintained By: FRAMES Staff (https://www.frames.gov/contact)
FRAMES Record Number: 63005