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- Title
EVALUACIÓN DE LA PÉRDIDA DE LA COBERTURA DEL BOSQUE SECO CHAQUEÑO EN EL MUNICIPIO DE TOROTORO Y EN EL PARQUE NACIONAL TOROTORO (POTOSÍ, BOLIVIA), MEDIANTE TELEDETECCIÓN.
- Authors
Fontúrbel, Francisco E.
- Abstract
Vegetation coverage of chaqueño dry forest in Torotoro National Park (Potosí, Bolivia) and Torotoro Municipality (which includes the National Park) was evaluated using remote sensing. I worked with two satellite images, a Landsat 5 TM from 1990 and a Landsat 7 ETM+ from 2001, both images were geometrically corrected, a normalized vegetation index was applied and a supervised classification was performed to distinguish "forest" from "matrix" categories. Classifications were fitted to the National Park's and Municipality's perimeters in ArcView, converted into vector format and a fragment analysis was performed in order to determine landscape, edge, shape, distance and core area metrics. Results show that 6 449 hectares of dry forest were lost from the forest in Municipality's area between 1990 and 2001, despite the fact that no total area significant differences were found, a clear tendency of average patch area reduction and an increase of patch numbers is evident between 1990 and 2001. Although yearly deforestation rates were relatively low (∼2% per year), forest habitat fragmentation and loss are a long--term threat to conservation of the biota associated with this forest.
- Subjects
POTOSI (Bolivia); BOLIVIA; DEFORESTATION; VEGETATION &; climate; REMOTE sensing; PLANT conservation; HABITATS; FRAGMENTED landscapes
- Publication
Ecologia Aplicada, 2007, Vol 6, Issue 1/2, p59
- ISSN
1726-2216
- Publication type
Article