Data/hora: 13/06/2024 03:50:27

Provedor de dados: | 25
País: | Brazil
Título: | Fronteira de expansão dos plantios de eucalipto no geoecossistema do médio vale do rio Paraíba do Sul (SP/RJ)
Autores: | Vianna, Lílian Gabriela Gomes; Sato, Anderson Mululo; Fernandes, Manoel do Couto; Coelho Netto, Ana Luiza.
Data: | 2007-10-25
Ano: | 2007
Palavras-chave: | Eucalyptus; Landsat; Fragmentos florestais; Gramíneas; Uso e cobertura; Dinâmica da paisagem.
Resumo: | Since early 21 century the landscape mosaic of middle Paraíba do Sul river valley (MPSRV) has been rapidly modified by spreading of Eucalyptus patches in substitution to cattle grazing grasslands. This work aims to recognize the modifications caused by the insertion of this new economical cycle in MPSRV landscape mosaic. The study area is located between Mar and Mantiqueira range, including Sesmarias, Barreiro de Baixo and Bananal drainage basins, where previous studies have been conducted. A headwater zone of a first order drainage basin in Sesmarias basin was chosen in 2006 to measure Eucalyptus plantations hydrological responses to biota-soil-water interactions. Two use and cover maps (2000 and 2007 years) were made using Landsat-7 and Landsat-5 images, respectively, to detect the occupation changes in this area. First results show cattle grazing grasslands as a matrix and a fast increase in Eucalyptus patches cover, especially in hilly domain. Forest fragments are concentrated in mountainous domain, but are also found smaller fragments in hilly domain.
Tipo: | Article
Idioma: | Português

Identificador:

1982-1751

http://hdl.handle.net/2315/122

Relação: | 1/2007

Formato:

394630 bytes

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