Bark chemistry of pinus contorta and P. sylvestris in relation to vole damage

摘要: Bark of Pinus contorta and sylvestris provenances, with different attractiveness to voles, were examined regard proximate nutrients, certain mineral elements resin acids. P. had significantly higher concentrations crude fat (resins), ash, phosphorus isopimaric acid less fibres. Certain provenances differed in the amounts resins nitrogen‐free extractives (soluble carbohydrates). Voles are suggested prefer generally, because its lower fibres assumed be preferred due their high contents resins.