Effect of soil humus cover on the establishment and development of mycorrhiza on containerisedpinus sylvestrisL. andpinus contortassp.latifoliaEngelm. after outplanting
作者:
Anders Dahlberg,
期刊:
Scandinavian Journal of Forest Research
(Taylor Available online 1990)
卷期:
Volume 5,
issue 1-4
页码: 103-112
ISSN:0282-7581
年代: 1990
DOI:10.1080/02827589009382597
出版商: Taylor & Francis Group
关键词: clear‐cut sites. Pinus sylvestris;P. contorta;ectomycorrhizae;establishment;humus
数据来源: Taylor
摘要:
The presence of humus was evaluated as a factor affecting the establishment and development of mycorrhiza in Scots pine(Pinus sylvestrisL.) and lodgepole pine (Pinus contortassp.latifoliaEngelm.) during the first growing season after outplanting on two clear‐cut sites. Humus proved to be of minor importance for the formation of mycorrhizae. Instead, the colonisation showed a patchy pattern, indicating spatial variation in the amounts of active inoculum. This variation may reflect differences in soil microhabitat and perhaps the mycorrhizal distribution in the logged stands. Total mycorrhizal short‐root frequency increased from 10% at outplanting in June to 40–65% in October. The nursery mycorrhiza accounted for 80–95% of the total mycorrhiza at the end of the investigation. However, by this time 60–90% of the seedlings had, to some extent, indigenous mycorrhiza with fungi from the clear‐cut sites.Piloderma croceumtended to be formed at a higher rate in the presence of humus than in its absence while another mycorrhizal type increased faster in the mineral soil.
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