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Native forest fragmentation mapping of the Alegre river watershed, Espirito Santo State, Brazil, using IKONOS II data

The main objective of this study was to create land use and diagnosis maps, at landscape level, of the native forest fragmentation through visual classification using IKONOS II data. The study was conducted in the river Alegre watershed, situated in the south region of State of Espirito Santo, Brazil. Twelve land use classes were mapped, pointing out 475 forest fragments. The classes of coffee plantation (2,086.2 ha), pasture (14,130.1 ha) and forest fragmentation (2,978.9 ha) occupied 92.16% (19,195.2 ha) of the total study area, which was about 20,819.8 ha. The majority of the forest fragments presented strongly elongated shapes, with an average of 6.3 ha. It was also noticed that most of them presented a high level of disturbance, with 452 and 166 forest fragments neighboring the pasture and coffee plantation classes, respectively.

Geoprocessing; land use


Sociedade de Investigações Florestais Universidade Federal de Viçosa, CEP: 36570-900 - Viçosa - Minas Gerais - Brazil, Tel: (55 31) 3612-3959 - Viçosa - MG - Brazil
E-mail: rarvore@sif.org.br