Índices de vegetación y unidades de paisaje de la Reserva de Fauna Silvestre Ciénaga de La Palmita e Isla de Pájaros, estado Zulia, Venezuela
Date
Journal Title
Journal ISSN
Volume Title
Publisher
Rev. Inv. Cs. Agro. y Vet.
Abstract
Se determinaron los índices de vegetación y las unidades de paisaje de la Reserva de Fauna Silvestre Ciénaga de La Palmita e Isla de Pájaros, empleando imágenes LANDSAT 8 (2013-2016) y el NDVI usando el programa ENVI. Se identificaron siete unidades de paisaje. El espejo de agua mostró un NDVI bajo (0,00-0,03), asociado al muy escaso vigor vegetal y el borde ciénaga-porción terrestre presentó 0,04-0,08 vinculado a los primeros indicios de productividad. Los suelos fangosos-desnudos revelaron 0,09-0,16 relacionado a escasas capas de fitoplancton. Las comunidades xerófilas intervenidas presentaron 0,17-0,24 contrastando con 0,25-0,28 de las formaciones xerófilas, espinosas y semideciduas bajas. Las comunidades de Avicennia germinans, Conocarpus erectus y Laguncularia racemosa mostraron 0,29-0,39 debido al bajo porte e individuos muertos; y Rhizophora mangle reveló 0,4-0,55, vinculado con la altura arborea, dosel semicerrado, pocos claros y verdor foliar intenso-brillante. Las unidades variaron desde comunidades xerófilas intervenidas hasta comunidades de R. mangle relativamente bien conservadas.
Vegetation indices and landscape units of the Wildlife Fauna Reservoir Ciénaga de La Palmita and Isla de Pájaros were determined, using LANDSAT 8 images (2013-2016) and the NDVI using the ENVI program. Seven landscape units were identified. The water surface of the swamp showed a low NDVI (0.00-0.03), associated with very little plant vigor and the swamp-land portion presented 0.04-0.08 linked to first signs of productivity. Muddy-bare soils revealed 0.09-0.16 related to scarce layers of phytoplankton. Disturbed xerophytic communities presented 0.17-0.24, contrasting with 0.25-0.28 of the xerophytic, spiny and semi-deciduous formations. The communities of Avicennia germinans, Conocarpus erectus and Laguncularia racemosa showed 0.29-0.39 due to low size and dead individuals; and Rhizophora mangle revealed 0.4-0.55, linked to arborea height, semi-enclosed canopy, few gaps and intense-bright leaf greenery. The units ranged from disturbed xerophytic scrubs to relatively well preserved R. mangle communities
Vegetation indices and landscape units of the Wildlife Fauna Reservoir Ciénaga de La Palmita and Isla de Pájaros were determined, using LANDSAT 8 images (2013-2016) and the NDVI using the ENVI program. Seven landscape units were identified. The water surface of the swamp showed a low NDVI (0.00-0.03), associated with very little plant vigor and the swamp-land portion presented 0.04-0.08 linked to first signs of productivity. Muddy-bare soils revealed 0.09-0.16 related to scarce layers of phytoplankton. Disturbed xerophytic communities presented 0.17-0.24, contrasting with 0.25-0.28 of the xerophytic, spiny and semi-deciduous formations. The communities of Avicennia germinans, Conocarpus erectus and Laguncularia racemosa showed 0.29-0.39 due to low size and dead individuals; and Rhizophora mangle revealed 0.4-0.55, linked to arborea height, semi-enclosed canopy, few gaps and intense-bright leaf greenery. The units ranged from disturbed xerophytic scrubs to relatively well preserved R. mangle communities
Description
Vol. 4, No. 11
Keywords
NDVI, humedal, manglar, vegetación xerófila, perturbaciones antropogénicas, Lago de Maracaibo, sensores remotos, NDVI, wetland, xerophytic vegetation, mangrove, Lake of Maracaibo, anthropogenic disturbances, remote sensing, NDVI, pantanal, manguezal, vegetação xerofítica, distúrbios antropogênicos, Lago de Maracaibo, sensoriamento remoto