Effects of soil morphology on the presence of alder within a mature jack pine forest
Peer Reviewed StatusNon-Peer Reviewed
MetadataShow full item record
Soil morphological differences have resulted in a distinct pattern of Green Alder growth within a predominately Jack Pine forest. Alder growth occurred mainly in an area of finer textured parent materials. After a rain these finer textured layers result in a temporary or perched zone of saturation. Materials with fine sandy loam to silty clay loam textures have volumetric moisture contents > 35 % . The ability of Alder to fix N2 results in a considerably greater accumulation of N than that found under pure Jack Pine forests. Textural bands act as a barrier to N leaching. Elevated levels of P within the finer textured materials may have caused the microsite to be more suitable for Alder growth. It appears that a dominance of fine and very fine sand, coupled with finer textured bands in the subsoil results in a more moist soil, with high P supplies, all contributing to more alder and eventually a more productive site. The greatest volume of merchantable timber corresponds to the same area where Alder growth is most significant.
Part OfSoils and Crops Workshop
The following license files are associated with this item: