1/f(alpha) fluctuations in the time dynamics of Mediterranean forest ecosystems by using normalized difference vegetation index satellite data

The characterization of 1/f(alpha) scaling behaviour in normalized difference vegetation index (NDVI) satellite data of forest ecosystems in southern Italy has been performed using the multiple segmenting method (MSM) and detrended fluctuation analysis (DFA). Our findings point out to the characterization of Mediterranean forest ecosystems as governed by persistent mechanisms, which indicate positive feedbacks tending to destabilize the system tinder external forces or perturbations.