Study of time variability of temperature and soil moisture in the experimental area of Esecaflor project – Caxiuanã-LBA

André Bezerra Oliveira, Antônio Carlos Lôla da Costa, Vicente de Paulo Rodrigues da Silva, Jamilly Leite Dias, Maria do Rosário Alves Patriota, Celina Cândida Ferreira Rodrigues

Abstract


The ESECAFLOR Project artificially induces a prolonged drought period and studies the consequences on the flows of water and carbon dioxide in an Amazon Rainforest, assessing the impacts on the ecosystem in response to this exclusion of water in the soil, a fact similar to the influence of a event of El Niño. ESECAFLOR is located in the National Forest of Caxiuanã, in the municipality of Melgaço. The objective of this work is to study soil temperature and soil moisture variability in the Brazilian Amazon. The data used refer to a period of 3 years. The results indicated greater soil moisture variability in the control plot (A), when compared to the exclusion plot (B), due to the latter having water stress. In plot B, the soil moisture remained practically constant during the studied period. In relation to the soil temperature, the variations were small in both plots, but with higher values in plot B in relation to plot A, since much of the energy that reaches the surface is used as sensible heat for its heating. With the exclusion of water in the forest soil, the life cycle may suffer irreversible changes.

Keywords


Soil temperature; Soil moisture; Caxiuanã

References


COSTA, R.F. et al. Projeto LBA/ESECAFLOR em Caxiuanã: características, atividades e resultados. Estação Científica Ferreira Penna: dez anos de pesquisa na Amazônia, Caxiuanã. Museu Paraense Emilio Goeldi (MPEG), 2003. 1 CD-ROM.

GASPARIM, E. et al. Temperatura no perfil do solo utilizando duas densidades de cobertura e solo nu. Acta Scientiarum. Maringá, 27 v., n.1, p. 107-115, Jan/mar, 2005.

HOREL, J.D.; HAHMANN, A.N.; GEISLER, J.E., An investigation of the annual cycle of convective activity over the tropical Americas. Journal of Climate., v. 2, n. 11, p. 1388 – 1403. 1989.

SOUZA JUNIOR, J.A.; OLIVEIRA, M.C.F.; DANTAS, V.A.; COSTA, J.P.R.. Regime pluviométrico da reserva florestal de Caxiuanã, 1996- 2001. In: CONGRESSO BRASILEIRO DE

METEOROLOGIA, 14., 2006, Florianópolis/SC. Anais... Florianópolis/SC: CBMET, 2006. 1 CD-ROM.

VIANA, R.S et. al. Perfil de temperatura do solo relacionado com a variabilidade de microorganismos em floresta tropical úmida. In: CONGRESSO BRASILEIRO DE

METEOROLOGIA, 2010. Disponível em: . Acesso em 12/05/2015.

VIANELLO, R.L.; ALVES, A.R. Meteorologia básica e aplicações. Universidade Federal de Viçosa-UFV, Viçosa/MG, imprensa Universitária, 1991. 449 p.




DOI: https://doi.org/10.5902/2179460X30741

Copyright (c) 2018 Ciência e Natura



Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.

 

DEAR AUTHORS,

PLEASE, CHECK CAREFULLY BEFORE YOUR SUBMISSION:

1. IF ALL AUTHORS "METADATA" (ORCID, LINK TO LATTES, SHORT BIOGRAPHY, AFFILIATION) WERE ADDED,

2. THE CORRECT IDIOM YOUR SECTION,

3 IF THE HIGHLIGHTS WERE ADDED,

4. IF THE GRAPHIC ABSTRACTS WAS ADDED,

5. IF THE REVIEWERS INDICATION WAS DONE,

6. IF THE REFERENCES FORMAT ARE CORRECT(ABNT)

7. IF THE RESOLUTION YOUR FIGURES (600 DPI) ARE SUITABLE

8.  IF THE STATEMENT BY THE ETHICS COMMITTEE (IF IT INVOLVES HUMANS) WAS ADDED;

9. IF THE DECLARATION OF ORIGINALITY WAS ADDED.

10. IF THE TEXT IS ORIGINAL. IF THE IDEA HAS ALREADY BEEN REGISTERED IN SUMMARY FORM, OR PUBLISHED IN CONGRESS ANNUALS, PLEASE INFORM THE EDITOR.