Assessing vegetation variability and trends in north-eastern Brazil using AVHRR and MODIS NDVI time series

Assessing vegetation variability and trends in north-eastern Brazil using AVHRR and MODIS NDVI time series

Desertification is a challenge in north-eastern Brazil (NEB) that needs to be understood to develop sustainable land-use strategies. This study analyses regional vegetation dynamics in NEB and the compatibility of two NDVI data sets to support future desertification assessment studies in the semi-ar...

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Veröffentlicht in:European journal of remote sensing 2013-01, Vol.46 (1), p.40-59
Hauptverfasser: Schucknecht, Anne, Erasmi, Stefan, Niemeyer, Irmgard, Matschullat, Jörg
Format: Artikel
Sprache:eng
Schlagworte:
Aridity
Atlantic Forest
BFAST
Cerrado
Datasets
Desertification
Land use
MODIS
Normalized Difference Vegetation Index
precipitation
Regional development
Statistical methods
time series decomposition
Trend analysis
Trends
Vegetation
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Zusammenfassung:Desertification is a challenge in north-eastern Brazil (NEB) that needs to be understood to develop sustainable land-use strategies. This study analyses regional vegetation dynamics in NEB and the compatibility of two NDVI data sets to support future desertification assessment studies in the semi-arid Caatinga biome. Vegetation variability and trends in NEB are analysed for 1982-2006, based on monthly AVHRR (GIMMS) NDVI data. The GIMMS data are compared with MODIS NDVI for the overlapping period 2001-2006. Existing statistical methods are applied and existing NDVI analyses in NEB expanded in respect to vegetation trend analysis and data set comparison.
ISSN:2279-7254
2279-7254
DOI:10.5721/EuJRS20134603