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Dipartimento di Biologia Vegetale, Università degli Studi di Roma «La Sapienza», Roma, Italy
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- PublicationOpen AccessRelations between morphological settings and vegetation covers in a medium relief landscape of Central Italy(2006-02)
; ; ; ; ; ;Abbate, G.; Dipartimento di Biologia Vegetale, Università degli Studi di Roma «La Sapienza», Roma, Italy ;Cavalli, R. M.; Laboratorio Aereo Ricerche Ambientali (LARA), IIA-CNR, Tor Vergata (RM), Italy ;Pascucci, S.; Laboratorio Aereo Ricerche Ambientali (LARA), IIA-CNR, Tor Vergata (RM), Italy ;Pignatti, S.; Laboratorio Aereo Ricerche Ambientali (LARA), IIA-CNR, Tor Vergata (RM), Italy ;Poscolieri, M.; Istituto di Acustica O.M. Corbino (IDAC), CNR, Tor Vergata (RM), Italy; ; ; ; Mount area, a medium relief structure within the Italian Latium region. The study aims at defining the relationships between vegetation and landform types and highlighting the main morphological characteristics within examined land cover classes. These were the result of the application of a supervised classification method to the first 28 (VISNIR) bands of the airborne MIVIS data collected within an extensive survey campaign over Rome Province. The analysis was supported by photo-interpretation of peculiar MIVIS band combinations and by data acquired during field surveys and from a pre-existing vegetation map. The morphometric data were obtained by processing a raster DEM created from topographic maps. These data were processed by means of a new morphometric classification method based on the statistical multivariate investigation of local topographic gradients, calculated along the 8 azimuth directions of each pixel neighbourhood. Such approach quickly estimates the spatial distribution of different types of homogeneous terrain units, emphasizing the impact of erosional and tectonic processes on the overall relief. Mutual relations between morphometric units and vegetation types were assessed by performing a correspondence analysis between the results of the two classifications.235 872 - PublicationOpen AccessMultiscale integration of satellite, airborne and field data for Mediterranean vegetation studies in the natural area of the Castelporziano Estate (Rome)(2006-02)
; ; ; ; ; ;Allegrini, A.; Dipartimento di Biologia Vegetale, Università degli Studi di Roma «La Sapienza», Roma, Italy ;Anselmi, S.; Dipartimento di Biologia Vegetale, Università degli Studi di Roma «La Sapienza», Roma, Italy ;Cavalli, R. M.; Laboratorio Aereo Ricerche Ambientali (LARA), IIA-CNR, Tor Vergata (RM), Italy ;Manes, F; Dipartimento di Biologia Vegetale, Università degli Studi di Roma «La Sapienza», Roma, Italy ;Pignatti, S.; Istituto di Metodologie per l’Analisi Ambientale (IMAA), CNR, Tito Scalo (PZ), Italy; ; ; ; new experimental approach to land analysis has recently been developed, based on the integration of information acquired on different scales; it enables the structure and the functionality of the vegetation in natural ecosystems to be analysed. This research aims at assessing the potentiality of the experimental approach by the integration of airborne and satellite remotely sensed data with ground measurements of structural parameters. In July 1999 a joint campaign for the acquisition of airborne (MIVIS, spatial resolution 3 m) and satellite remotely sensed data (Landsat 5TM, spatial resolution 30 m) and measures taken at ground (PAI), was deployed in the Presidential Estate at Castelporziano (Rome, Italy). The spectral signatures of the main vegetational types of the Estate were examined and the PAI were related to NDVI values, calculated by means of satellite and airborne images. The adopted approach enabled PAI maps to be produced. The linear relation between measured PAI and estimated PAI showed a higher coefficient of determination when the MIVIS data were used. The sensor high spectral resolution has moreover allowed to better describe the structural characteristics of the main plant typologies at Castelporziano Estate.147 451