Assertion: birch's soil | /r/HasProperty | favourable sites
Facets:
value: for northern outliers of white spruce
type: TRANSITIVE-OBJECT
Source sentences:
text: High-lime ecotypes may exist (Pelletier 1966), and in Canada Forest Section B8 the presence of balsam poplar and white spruce on some of the moulded moraines and clays seems to be correlated with the considerable lime content of these materials (Rowe 1972, Stiell 1976), while calcareous soils are favourable sites for northern outliers of white spruce (Hustich 1953).