Productivité de Plantations d'épinette blanche sur le sol sablonneux à Grand'Mère, P.Q.

About nine square miles of the Proulx Block white spruce plantations at Grand-Mère were inventoried in 1946, 1956, 1961 and 1966. Results of these inventories show that on about 20% of the studied area characterized by the Calliergon forest type, growth of trees planted in 1926 is most satisfactory; on about 45% of the area characterized by the Calliergon-Polytrichum type, growth is fairly good; while on about 53% of the area characterized by the Cladonia-Polytrichum type, growth rate is slow.It is concluded that, in general the growth of the white spruce plantations at Grand-Mère is no longer stagnant, and recovery, even on the poorest site, is encouraging.