Data/hora: 16/06/2024 07:03:23

Biblioteca(s): | Embrapa Territorial.
Data corrente: | 22/04/2008
Data da última atualização: | 22/08/2014
Autoria: | LU, D.; BATISTELLA, M.; MAUSEL, P.; MORAN, E.
Afiliação: | D. Lu (Indiana University), Mateus Batistella -(Embrapa Monitoramento por Satélite), P. Mausel ( Indiana State University), E. Moran ( Indiana University).
Título: | Mappig and monitoring land degradation risks in the western Brazilian Amazon using multitemporal landsat TM/ETM + IMAGES.
Ano de publicação: | 2007
Fonte/Imprenta: | Land Degradation & Development, v. 18, p. 41-54, 2007.
DOI: | IO.1002lldr.762
Idioma: | Inglês
Conteúdo: | 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.
Palavras-Chave: | Amazon; land degradation risk; Landsat TM/ETM+; spectral mixture analysis; surface cover index.
Thesaurus Nal: | Brazil.
Categoria do assunto: | --
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/107125/1/2098.pdf
Registro original: | Embrapa Territorial (CNPM)
Exemplares: | CNPM - (2098-1) - UPC - AP - PP - 07/048 - AP - 2007.048 - DIS