Bark chemistry ofpinus contortaandP. sylvestrisin relation to vole damage
作者:
Lennart Hansson,
Rolf Gref,
期刊:
Scandinavian Journal of Forest Research
(Taylor Available online 1987)
卷期:
Volume 2,
issue 1-4
页码: 359-363
ISSN:0282-7581
年代: 1987
DOI:10.1080/02827588709382473
出版商: Taylor & Francis Group
关键词: vole damage;Pinus contorta;Pinus sylvestris;bark;proximate nutrients;minerals;resin acids
数据来源: Taylor
摘要:
Barkof Pinus contortaandPinus sylvestrisprovenances, with different attractiveness to voles, were examined with regard to proximate nutrients, certain mineral elements and resin acids.P. contortahad significantly higher concentrations of crude fat (resins), ash, phosphorus and isopimaric acid and less crude fibres. CertainP. contortaprovenances differed significantly in the amounts of resins and nitrogen‐free extractives (soluble carbohydrates). Voles are suggested to preferP. contortagenerally, because of its lower amounts of fibres and certainP. contortaprovenances are assumed to be less preferred due to their high contents of resins.
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