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Le piante alpine costituiscono un elemento importante per la cultura svizzera. Se il clima dovesse diventare più caldo, queste piante si troverebbero in una situazione di pericolo.
Dalla montagna al piano
Allo scopo di studiare il futuro delle genziane e delle stelle alpine, ricercatori dell’Istituto federale per la foresta, la neve e il paesaggio (WSL) guidati da Loïc Pellissier hanno trapiantato dieci tonnellate di tappeto erboso alpino da 2100 a 1400 m d’altezza.
Per l’esperimento in collaborazione con il Politecnico federale (ETH) di Zurigo, i ricercatori hanno trasferito complessivamente 80 zolle di prato misto a radici settecento metri più in basso grazie a 20 voli di elicottero.
Da analisi preliminari emerge l’ipotesi che l’avvenire delle piante alpine si prospetta difficile. Nel 2012, colleghi di Pellissier all’ETH avevano fatto un esperimento simile, mettendo in luce come le piante alpine prosperano a stento a temperature inferiori.
ATS/WSL/Dek
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