Published in Scientific Papers. Series E. Land Reclamation, Earth Observation & Surveying, Environmental Engineering, Vol. XIII
Written by Margareta MAGUREANU, Loredana COPACEAN, Despina-Maria BORDEAN, Luminita COJOCARIU
The work focused on the analysis of the vegetation cover of the grasslands according to the Fraction of Absorbed Photosynthetically Active Radiation (fAPAR index), in five different stages, during the same year (2022), on altitudinal levels, from three groups of mountains. 110 grasslands located in different environmental conditions were studied, from: the Banat Mountains, the Poiana Ruscă Mountains and part of the Southern Carpathians. Five Sentinel 2 satellite scenes were used, acquired on the following dates: 22.03, 16.05, 15.07, 08.09, 18.10 and the Digital Elevation Model, classified into 8 altitudinal levels, from 53-2473 m. The results show that the fAPAR values are different, lower in March when the vegetation is still stagnant and does not use solar radiation, maximum in July when the vegetation is very well represented and uses maximum solar radiation, and from August, a downward trend, along with the reduction of the physiological activity of the plants in the grasslands. Also, differences in average fAPAR values by mountain groups and similarities in altitudinal steps between mountain groups were noticed.
[Read full article] [Citation]
