The effect of stand density on the susceptibility ofPinus sylvestristoGremmeniella abietina
作者:
Pekka Niemelä,
Martti Lindgren,
Antti Uotila,
期刊:
Scandinavian Journal of Forest Research
(Taylor Available online 1992)
卷期:
Volume 7,
issue 1-4
页码: 129-133
ISSN:0282-7581
年代: 1992
DOI:10.1080/02827589209382705
出版商: Taylor & Francis Group
关键词: Scleroderris canker;Scots pine;stand density.
数据来源: Taylor
摘要:
The susceptibility of a 20‐year‐old Scots pine stand to Scleroderris canker caused byGremmeniella abietinawas monitored in relation to stocking density. The data included five densities varying from 800 to 5 000 trees/ha. The degree of damage, as indicated by the proportion of brown needles and the number of dead trees, correlated positively with the stand density. The proportion of dead trees was low at densities below 1 100 trees/ha, but increased linearly with increasing density.
点击下载:
PDF (271KB)
返 回