This paper aims to provide general considerations, in the form of a scientific review, with reference to selected experiences of ALS applications under alpine, temperate and Mediterranean environments in Italy as case studies. In Italy, the use of ALS data have been mainly focused on the stratification of forest stands and the estimation of their timber volume and biomass at local scale. Potential for ALS data exploitation concerns their integration in forest inventories on large territories, their usage for silvicultural systems detection and their use for the estimation of fuel load in forest and pre-forest stands. Multitemporal ALS may even be suitable to support the assessment of current annual volume increment and the harvesting rates.
The aim of this study was to investigate changes over time in chemical composition, digestibility
and net energy for lactation (NEl) contents of 12 species of alpine pastures during the vegetative
season (i.e., Agrostis tenuis, Anthoxanthum alpinum, Carex sempervirens, Festuca rubra, Nardus
stricta, Phleum alpinum, Poa alpina, Poa violacea, Alchemilla vulgaris, Leontodon hispidus, Poten-
tilla aurea, Trifolium repens). Wild seeds were collected from plants spontaneously occurring in
mountain pastures in North-East Italy and sown in a greenhouse. Plants were transplanted in open
main field plots. Each main plot was divided into sub-plots, which were cut (first cut) in succession
every 10 days in two consecutive years. Herbage regrowth (second cut) was evaluated at 45, 60 and
75 days after first cut. Herbage samples were analysed for chemical composition, for in vitro organic
matter digestibility (OMD), and the NEl content was estimated. During the pasture utilisation period
(i.e., thermic sum between 500 and 1200
◦
C) the species had limited variation in their average CP con-
tents (81–109 g/kg DM) excluding the lowest values of F. rubra and P. violacea (74 and 71 g/kg DM,
respectively; P<0.05) and the highest value of T. repens (202 g/kg DM; P<0.05). Within grasses,
there were very fibrous species (>700 g NDF/kg DM, such as F. rubra, N. stricta and P. violacea)
and species with medium contents (573–664 g NDF/kg DM), while forbs and the legume specie had
a low content ( ≤ 403 g NDF/kg DM). The OMD ranged from P. violacea (256 g/kg DM; P<0.05) to T.
repens (730 g/kg DM; P<0.05). The highest NEl content was for T. repens (6.3 MJ/kg DM; P<0.05
Negli anni 2012-16 la Commissione tecnico-scientifica del Segretariato della Presidenza della RepubblicaItaliana ha promosso un progetto di ricerca finalizzato alla realizzazione con metodi innovativi dell'inventario forestale e del piano pluriennale di gestione selvicolturale della Foresta Presidenziale di Castelporziano, situata nella omonima Tenuta tra Roma e il litorale laziale ed estesa su circa 5000 ettari. Lo studio, basato su un vasto impiego di metodi e dati ALS-LiDAR, ha portato all'allestimento del nuovo Sistema informativo forestale (inventariale e selvicolturale) della Tenuta, denominato SIFTeC, a supporto della conoscenza e gestione del patrimonio mediante sistemi totalmente informatizzati disponibili anche in tempo reale in campo su terminali smartphone e tablet. Parole chiave: LiDAR; mobile/web-GIS, campionamento relascopico; assestamento forestale; ripresa su base selvicolturale. -L'approccio LiDAR/GIS per la realizzazione dell'inventario forestale e del piano selvicolturale della Foresta Presidenziale di Castelporziano. L'Italia Forestale e Montana, 74 (6): 341-356.
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