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Charged particle energy spectra in e+e- annihilation are compared with theanalytical predictions from the QCD evolution equation in the Modified LeadingLog Approximation. With the nonperturbative initial condition shifted down tothreshold as suggested by the Local Parton Hadron Duality picture a gooddescription of the data from the lowest up to highest available energiesresults. The two essential parameters in this approach are determined from amoment analysis. The sensitivity of the fit to the running of alpha_s and tothe number of active flavours (including a light gluino) is demonstrated. Forvery high energies the theory predicts a scaling behaviour in certain rescaledvariables (``zeta-scaling''). The data show an approximate behaviour of thistype in the present energy range and come close to the predicted asymptoticscaling function for the small particle energies.Comment: LaTeX2e, 45 pages, 12 figure

Low and high energy limits of particle spectra in QCD jets