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STUDIO PROPEDEUTICO ALLA REDAZIONE DI UN PIANO PAESAGGISTICO PER LA VAL PELLICE - METODOLOGIA...................................................................................................................................................................8 1.1 Sistemi di terre .....................................................................................................................................................................8 CAP. 2. UNITÀ DI TERRE...............................................................................................................................................................11 2.1 Definizione delle Unità di terre .........................................................................................................................................11 2.2 Geomorfologia....................................................................................................................................................................11 2.3 Idrologia..............................................................................................................................................................................15 2.3.1. Caratteri idrologici...................................................................................................................................................15 2.3.2. La qualità delle acque..............................................................................................................................................18 2.4 Clima .................................................................................................................................................................................20 2.5 Fauna .................................................................................................................................................................................22 2.5.1. Zonazione ittica.......................................................................................................................................................23 2.6 Pedologia.............................................................................................................................................................................24 2.6.1. Metodologia di indagine..........................................................................................................................................24 2.6.2. I risultati dei rilievi in campo...................................................................................................................................27 2.7 Vegetazione e uso delle terre .............................................................................................................................................35 2.7.1. L’uso delle terre in Val Pellice................................................................................................................................36 2.7.2. Relazioni tra uso delle terre ed erosione..................................................................................................................40 2.7.3. Singolarità specifiche ..............................................................................................................................................45 2.7.3.1 I suoli microbiotici.............................................................................................................................................45 2.7.3.2 Le carenze nella gestione selvicolturale ............................................................................................................46 2.7.3.3 Ambiti