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Il bosco guadagna terreno in Svizzera: negli ultimi sette anni la superficie è aumentata dell'1,5%, come dimostrano le cifre che appaiono nell'inventario federale pubblicato giovedì.
Se sull'Altopiano, densamente abitato e dove lo sfruttamento del legname è maggiore, si è constatato un leggero calo, sulle Alpi la tendenza all'incremento constatata in passato trova vistosa conferma.
La qualità ecologica di quest'ultimo ambiente è inoltre superiore in virtù delle quantità crescenti di legno morto, che offre prezioso cibo e rifugio ad animali e altri organismi.
ATS/dg
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