Land cover changes on the southern brazilian fields: modeling of impacts on land surface energy fluxes

Authors

  • Guilherme Goergen Universidade Federal de Santa Maria, RS
  • Roilan Hernandez Valdes Universidade Federal de Santa Maria, RS
  • Débora Regina Roberti Universidade Federal de Santa Maria, RS
  • Gervásio Annes Degrazia Universidade Federal de Santa Maria, RS

DOI:

https://doi.org/10.5902/2179460X30563

Keywords:

Land cover change, energy balance, modeling, Campos

Abstract

In this work, we investigated the impacts of land cover changes on the surface energy balance, on the Campos Sulinos of Southern Brazilian. For this, we used the INLAND model to simulate the multiple processes that occur in the soil-vegetation-atmosphere system, considering three experiments, called control (ctrl), agriculture (agr) and bare soil (bar). The results showed that the model was able to satisfactorily represent the surface energy flux considering the natural vegetation in the Pampa biome. The changes in the physiological parameters showed the great influence that the vegetation cover exerts on the components of the surface energy balance, especially in relation to the reduction of the net radiation (approximately 20% in the conversion 1 and 40% in the conversion 2), caused largely by the increase in surface albedo (around 10% in the conversion 1 and 17% in the conversion 2). Consequently, latent and sensitive heat fluxes also show a significant reduction.

Downloads

Download data is not yet available.

References

CONAB. Companhia Nacional de Abastecimento. Acompanhamento da safra brasileira de grãos. [S.l.], 2015. v. 2, n. 11, 1-101 p.

FOLEY, J. A.; PRENTICE, I. C.; RAMANKUTTY, N.; LEVIS, S.; POLLARD, D.; SITCH, S.; HAXELTINE, A. An integrated biosphere model of land surface processes, terrestrial carbon balance, and vegetation dynamics. Global Biogeochemical Cycles, v. 10, n. 4, p. 603–628, 1996.

QUADROS, F. L. F. d.; PILLAR, V. D. P. Dinâmica vegetacional em pastagem natural submetida a tratamentos de queima e pastejo. Ciência Rural, scielo, v. 31, p. 863 – 868, 10 2001. ISSN 0103-8478.

SELLERS, P. J.; LOS, S. O.; TUCKER, C. J.; JUSTICE, C. O.; DAZLICH, D. A.; COLLATZ, G. J.; RANDALL, D. A. A Revised Land Surface Parameterization (SiB2) for atmospheric GCMs Part II: The Generation of Global Fields of Terrestrial Biophysical Parameters from Satellite Data. Journal of Climate, v. 9, p. 706–737, 1996.

VALENTE, F. C. P. Sensibilidade do fechamento do balanço de energia a métodos de processamento de dados de fluxos superficiais sobre o bioma Pampa. 2016. 93 p. Dissertação (Mestrado em Meteorologia) — Universidade Federal de Santa Maria, 2016.

VAREJãO, C. G.; COSTA, M. H.; CAMARGO, C. C. S. A multi-objective hierarchical calibration procedure for land surface/ecosystem models. Inverse Problems in Science and Engineering, v. 21, n. 3, p. 357–386, 2013.

VRUGT, J. A.; ROBINSON, B. A. Improved evolutionary optimization from genetically adaptive multimethod search. Proceedings of the National Academy of Sciences, v. 104, n. 3, p. 708–711, 2007.

ZAMBRANO-BIGIARINI, M. hydroGOF: Goodness-of-fit functions for comparison of simulated and observed hydrological time series. [S.l.], 2014. R package version 0.3-8. Disponível em: https://CRAN.R-project.org/package=hydroGOF.

Published

2018-03-22

How to Cite

Goergen, G., Valdes, R. H., Roberti, D. R., & Degrazia, G. A. (2018). Land cover changes on the southern brazilian fields: modeling of impacts on land surface energy fluxes. Ciência E Natura, 40, 39–44. https://doi.org/10.5902/2179460X30563

Most read articles by the same author(s)

<< < 1 2 3 4 5 6 7 8 9 10 > >> 

Similar Articles

You may also start an advanced similarity search for this article.