A geospatial data integration framework for mapping and monitoring tropical landscape diversity in Costa Rica's San Juan-La Selva Biological Corridor
Landcover change has substantially reduced the amount of tropical rain forests since the 1950s. Little is known about the extent of remaining forest types. A multivariate analysis of 144 forest plots across Costa Rica's San Juan-La Selva Biological Corridor resulted in eight floristically defined old-growth forest categories. Spectral separability was tested between categories using Landsat TM bands and vegetation indices for old-growth types, palm swamps, tree plantations and regrowth. Image filtering and NDVI increased spectral separability among categories by 30 per cent. Separability tests resulted in seven well-discriminated forest categories. Factors driving forest beta-diversity are not well quantified for wet tropical environments. We examined the relationship between rain forest composition and environmental variation for a 3000 km2 area in northeastern Costa Rica.
| Main Authors: | , |
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| Format: | Texto biblioteca |
| Language: | spa |
| Published: |
Turrialba, Costa Rica Centro Agronómico Tropical de Investigación y Enseñanza (CATIE)
2006
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| Subjects: | SISTEMAS DE INFORMACION GEOGRAFICA, SISTEMAS DE INFORMACION, TELEDETECCION, TRATAMIENTO DE IMAGENES, PROCESAMIENTO DE INFORMACION, ANALISIS DE DATOS, BIODIVERSIDAD, PAISAJE, COBERTURA DE SUELOS, VIGILANCIA AMBIENTAL, BOSQUE TROPICAL HUMEDO, COSTA RICA, |
| Online Access: | https://repositorio.catie.ac.cr/handle/11554/43 |
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| Summary: | Landcover change has substantially reduced the amount of tropical rain forests since the 1950s. Little is known about the extent of remaining forest types. A multivariate analysis of 144 forest plots across Costa Rica's San Juan-La Selva Biological Corridor resulted in eight floristically defined old-growth forest categories. Spectral separability was tested between categories using Landsat TM bands and vegetation indices for old-growth types, palm swamps, tree plantations and regrowth. Image filtering and NDVI increased spectral separability among categories by 30 per cent. Separability tests resulted in seven well-discriminated forest categories. Factors driving forest beta-diversity are not well quantified for wet tropical environments. We examined the relationship between rain forest composition and environmental variation for a 3000 km2 area in northeastern Costa Rica. |
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