MODIS TIME SERIES ANALYSIS AND TRMM IN EUCALYPTUS PLANTATIONS
Keywords:
Índices espectrais, sensor MODIS, povoamentos de eucaliptoAbstract
The objective of this work was to analyze and compare spectral indexes in eucalyptus plantations and
correlate them with precipitation data for the period from 2003 to 2012, in order to assess whether climate
change has an influence on vegetation phenology. The methodology entailed obtaining the mean spectral
indexes (NDVI, EVI and GPP) of MODIS images and elaborating the temporal profiles of the eucalyptus
vegetation, for both cloned seedlings and those grown from seeds. These profiles were correlated with
TRMM precipitation data. The results showed NDVI values higher than the EVI, although a clearly defined
seasonality was not present, whereas the GPP demonstrated a well-defined seasonal behavior in all
of the years. The correlation between the spectral indices and the precipitation had representative results
for some years, including El Niño and La Niña periods. It was concluded that MODIS products allow the
evaluation of phenological cycles in eucalyptus plantations, principally for the planting and cutting phases.
Keywords: Spectral indices; MODIS sensor; Stands of eucalyptus.
Downloads
Published
Issue
Section
License
Authors who publish in this journal agree to the following terms:
\- \
- Authors retain the copyright and grant MERCATOR the right of first publication, with the work simultaneously licensed under the Creative Commons Attribution License, which allows the sharing of the work with recognition of the authorship of the work and initial publication in this journal. \
- Authors are authorized to sign additional contracts separately, for non-exclusive distribution of the version of the work published in this journal (e.g., publish in an institutional repository or as a book chapter), with acknowledgment of authorship and initial publication in this journal. \
- Authors are allowed and encouraged to publish and distribute their work online (e.g., in institutional repositories or on their personal page) at any point before or during the editorial process, as this can generate productive changes as well as increase the impact and citation of the published work (see The Effect of Free Access). \
- Authors are responsible for the content of the manuscript published in the journal. \