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Provedor de dados:  Repositório Alice
País:  Brazil
Título:  Mappig and monitoring land degradation risks in the western Brazilian Amazon using multitemporal landsat TM/ETM + IMAGES.
Autores:  LU, D.
Data:  2008-04-22
Ano:  2007
Palavras-chave:  Land degradation risk
Surface cover index
Spectral mixture analysis
Landsat TM/ETM+
Resumo:  Mapping and monitoring land degradation in areas under human-induced stresses have urgent tasks in remote sensing whose importance has not yet been fully appreciated. In this study, a surface cover index (SCI) is developed to evaluate and map potential land degradation risks associated with deforestation and accompanying soil erosion in a Western Brazilian Amazon rural settlement study area. The relationships between land-use and land-cover (LULC) types and land degradation risks as well as the impacts of LULC change on land degradation are examined. This research indicates that remotely sensed data can be effectively used for identification and mapping of land degradation risks and monitoring of land degradation changes in the study area. Sites covered by mature forest and advanced successional forests have low land degradation risk potential, while some types of initial successional forests, agroforestry/perennial agriculture and pasture have higher risk potential. Deforestation and associated soil erosion are major causes leading to land degradation, while vegetation regrowth reduces such problems.

Tipo:  Artigo em periódico indexado (ALICE)
Idioma:  Inglês
Identificador:  2098

Editor:  Land Degradation & Development, v. 18, p. 41-54, 2007.
Relação:  Embrapa Monitoramento por Satélite - Artigo em periódico indexado (ALICE)

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