TECHNIQUE POUR ECHANTILLONNER LES RACINES DE PLANTES DANS LE SOL GELE ET ENNEIGE

A tubular drill has been designed to extract a frozen soil core 12–15 cm in diameter and 15–40 cm in length with the roots and collars of intact plants. A snow cylinder is used to clear the sampling spot, causing minimum disturbance to the snow cover. This equipment makes possible a large scale study of vegetation during the cold season.