Energy balance characteristics in a mangrove at Bragança-PA and soil heat flux modifications after deforestation

Authors

  • João Batista Miranda RIBEIRO UFPA
  • Edson José Paulino da ROCHA ufpa
  • Marco Antonio Vieira FERREIRA
  • Paulo Jorge de OLIVEIRA Universidade Federal Rural da Amazônia
  • Arthur MATTOS Universidade Federal do Rio Grande do Norte-LARHISA-CT

Abstract

The mangrove ecosystem of Bragança-PA which has an area of 120 km2 presents some deforested areas. An micrometerological experiment was developed to determine the micrometeorological conditions in the mangrove during 1997, where it was observed that the global solar radiation was high with a peak of 938 W m-2. The results have shown a large interception of photosynthetic active radiation through the canopy. The net radiation in the mangrove area represents 78% of the incident solar radiation. Latent and sensible heat fluxes were 69% and 24% of net radiation, respectively. It was found that in the deforested area soil temperatures reached values of 38,3oC in relation to a value of 27,0oC in the mangrove, due to the high rates of soil heating which remained

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Published

2008-08-27

Issue

Vol. 32 No. 3 (2007)

Section

Article

License

The authors maintain the copyright and grant GEOGRAFIA the right of first publication, with the articles simultaneously licensed under the Creative Commons BY 4.0 License, which allows sharing and adapting the articles for any purpose, as long as appropriate credits and provisions of image rights, privacy or moral rights. Other legal attributions can be accessed at: https://creativecommons.org/licenses/by/4.0/legalcode.en.

 

Geography, Rio Claro, SP, Brazil - eISSN 1983-8700 is licensed under the Creative Commons BY 4.0 License.

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