Spectral Behavior of Pinus elliottii, Subjected to Drought in Southern Brazil
- Géssyca Fernanda de Sena Oliveira
- Uilian do Nascimento Barbosa
- José Jorge Monteiro Junior
- Diogo José Oliveira Pimentel
- Julianne Moura da Silva
- Lorena de Moura Melo
- Giselle Lemos Moreira
- Gabriela Salami
- Tamires Leal de Lima
- Pierre André Bellé
- Elisiane Alba
- Emanuel Araújo Silva
- Rudiney Soares Pereira
- Adriano Castelo dos Santos
Abstract
The second most cultivated plant to a forest range in Brazil is the Pinus elliottii. This paper aims to evaluate the spectral behavior of individuals of Pinus elliottii in the electromagnetic radiation (1st) of the visible and (2nd) the infrared, when submitted to the water deficit. The experiment was conducted in the city of Santa Maria located at the Rio Grande do Sul State. The spectral responses of 10 individuals of Pinus elliottii were observed in different climatic seasons at 24 months of age. To evaluate the spectral behavior a spectroradiometer was used, and the behavior in the 450 to 1700 nm range was analyzed. Five individuals were submitted to water deficit treatment and five were used as controls, remaining in adequate water conditions. The spectral pattern for individuals submitted to water deficit was similar, but a trend of wavelength responses in the region of visible green (577-491 nm) and near-infrared (1100-789 nm) was noticeable. The most evident differences occurred in the fall season when differences in spectral amplitudes are noticeable and significantly different from the rest of the year.
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- DOI:10.5539/jas.v12n1p179
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