@Article{TomasellaViBaRoSaSe:2018:DeTrNo,
author = "Tomasella, Javier and Vieira, Rita M{\'a}rcia Silva Pinto and
Barbosa, Alexandre Augusto and Rodriguez, Daniel A. and Santana,
Marcos de Oliveira and Sestini, Marcelo F.",
affiliation = "{Centro Nacional de Monitoramento e Alertas de Desastres Naturais
(CEMADEN)} and {Instituto Nacional de Pesquisas Espaciais (INPE)}
and {Instituto Nacional de Pesquisas Espaciais (INPE)} and
{Instituto Alberto Luiz Coimbra de P{\'o}s-Gradua{\c{c}}{\~a}o
e Pesquisa de Engenharia} and {Minist{\'e}rio do Meio Ambiente}
and {Instituto Nacional de Pesquisas Espaciais (INPE)}",
title = "Desertification trends in the Northeast of Brazil over the period
2000–2016",
journal = "International Journal of Applied Earth Observation and
Geoinformation",
year = "2018",
volume = "73",
pages = "197--206",
month = "Dec.",
note = "{Pr{\^e}mio CAPES Elsevier 2023 - ODS 15: Vida terrestre}",
keywords = "NDVI, Desertification, Brazilian Northeast.",
abstract = "Information about changes in land use and land cover is useful to
address issues related to drylands management, as well as to
support decision-making related to the sustainable use of soils.
Since drylands are frequently affected by accelerated soil
erosion, land degradation and desertification associated with
vegetation cover losses, constant monitoring of land use and land
cover changes are required. However, land use and land cover maps
are often not available, making it difficult to monitor
degradation. Therefore, in this work, we developed an efficient
mapping method to monitor bare soil areas, which are indicative of
land degradation in the case of the Northeast of Brazil, using
Normalized Difference Vegetation Index images. The proposed
methodology was field calibrated and applied to the region using
17-year (20002016) NDVI maps, with a spatial resolution of 250 m.
Based on bare soil mapping, we estimated the degree of degradation
using an index calculated from the persistence and frequency of
bare soil during the study period. The results indicated that the
degraded areas increased in the period of the study, mainly in
areas of pasture and Caatinga. This expansion has been accelerated
due to the severe drought that affected the region since 2011.",
doi = "10.1016/j.jag.2018.06.012",
url = "http://dx.doi.org/10.1016/j.jag.2018.06.012",
issn = "0303-2434",
language = "en",
targetfile = "tomasella_desertification.pdf",
urlaccessdate = "04 maio 2024"
}