The fragmentation degree of forest cover in the Fitogeografic Units (FU) of Costa Rica was studied during three years: 1997, 2000 and 2005.
This permitted to calculate the annual percentage change rate using the formula proposed by Puyravaud (2003). Software that allows both vectorial and raster formats was used, such as: ArcView 3.3, ArcGis 9.3 and FRAGSTATS 3.3. The measurements of fragmentation calculated by software FRAGSTATS 3.3 we...
| Autores Principales: | Calvo-Obando, Ana, Ortiz-Malavasi, Edgar |
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| Formato: | Artículo |
| Idioma: | Español |
| Publicado: |
Editorial Tecnológica de Costa Rica
2012
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| Materias: | |
| Acceso en línea: |
https://revistas.tec.ac.cr/index.php/kuru/article/view/359 http://hdl.handle.net/2238/12548 |
| Sumario: |
This permitted to calculate the annual percentage change rate using the formula proposed by Puyravaud (2003). Software that allows both vectorial and raster formats was used, such as: ArcView 3.3, ArcGis 9.3 and FRAGSTATS 3.3. The measurements of fragmentation calculated by software FRAGSTATS 3.3 were: remnant area, number of patches (NP), mean nearest neighbor distance (MNN) and patch density (PD). During the period 1997-2000 9 139 hectares were deforested, 54,8% was concentrated in the UF 3a (Tortuguero plains, lowlands), while in the period 2000-2005, 23 699 hectares were cut, of which 18,6% was concentrated in the UF 3a (Tortuguero plains, lowlands), nevertheless it appeared recovery of forest cover. Only during the period 2000-2005 were identified processes of loss and recovery of forest cover simultaneously. |
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