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. 2018 Oct 30;190(11):688.
doi: 10.1007/s10661-018-7060-1.

Spectral trend of vegetation with rainfall in events of El Niño-Southern Oscillation for Atlantic Forest biome, Brazil

Thais Cristina de Oliveira Souza  1 , Rafael Coll Delgado  1 , Iris Cristiane Magistrali  1 , Gilsonley Lopes Dos Santos  1 , Daniel Costa de Carvalho  1 , Paulo Eduardo Teodoro  2 , Carlos Antônio da Silva Júnior  3 , Rodrigo Hotzz Caúla  1
Affiliations

Spectral trend of vegetation with rainfall in events of El Niño-Southern Oscillation for Atlantic Forest biome, Brazil

Thais Cristina de Oliveira Souza et al. Environ Monit Assess. .

Abstract

This study aimed to analyze the spectral trend of vegetation with rainfall in El Niño-Southern Oscillation events (ENSO) in the Atlantic Forest, Brazil. Monthly rainfall data were collected from 85 conventional meteorological stations (EMC), data from the Enhanced Vegetation Index 2 (EVI2) and ENSO events (El Niño, La Niña, and Neutral) in the period from 2001 to 2013. Afterwards, state cluster analysis was performed using the results of non-parametric tests. The Mann-Kendall (MK) non-parametric test did not identify a trend pattern in rainfall distribution in the Atlantic Forest. The results for EVI2 by state and region showed that the trend is decreasing in the Northeast Region, except for the states of Alagoas and Pernambuco. Southeast region showed an increasing trend of EVI2 (except for Rio de Janeiro and São Paulo), while the South region showed a decreasing trend. In the Midwest, the trend was significantly decreasing. In the prognosis elaborated for the future, the regions with significant declines of the vegetation were the Northeast and Midwest. This study shows that the Atlantic Forest in some regions of Brazil has been suffering from the growing urbanization process and there is a trend of soil degradation.

Keywords: Climate; ENSO; Landscape change; Remote sensing; Vegetation index.

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References

    1. Braz J Biol. 2010 Oct;70(3 Suppl):697-708 - PubMed
    1. Glob Chang Biol. 2016 Jun;22(6):2003-12 - PubMed

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