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Changes in carbon stock following soil scarification of non-wooded stands in Hokkaido, northern Japan

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Title: Changes in carbon stock following soil scarification of non-wooded stands in Hokkaido, northern Japan
Authors: Aoyama, Keiichi Browse this author
Yoshida, Toshiya Browse this author →KAKEN DB
Harada, Akane Browse this author
Noguchi, Mahoko Browse this author
Miya, Hisashi Browse this author
Shibata, Hideaki Browse this author →KAKEN DB
Keywords: Afforestation
Carbon sink management
Cool-temperate forest
Dwarf bamboo
Natural regeneration
Issue Date: Feb-2011
Publisher: Springer Japan
Journal Title: Journal of Forest Research
Volume: 16
Issue: 1
Start Page: 35
End Page: 45
Publisher DOI: 10.1007/s10310-010-0204-y
Abstract: To restore nonwooded stands dominated by dwarf bamboo species (Sasa kurilensis or S. senanensis) into forests, mechanical soil scarification has been applied in northern Japan since the 1960s. The treatment is followed both by natural regeneration and artificial planting. In this study, we quantified the total carbon stock (plants plus 0.3 m depth of soil) of these stands over 35-year age-sequences. The natural regeneration stands were gradually dominated by Betula ermanii. The carbon stock increased linearly to 215.1 ± 35.2 Mg C ha^[-1] for a 37-year-old stand formerly dominated by S. kurilensis, and 181.1 ± 29.8 Mg C ha^[-1] for 34-year-old stand formerly dominated by S. senanensis. The latter was similar to that of a Picea glehnii plantation, formerly dominated by S. senanensis, with comparable stand age (160.3 ± 6.7 Mg C ha^[-1] for 35-year-old stands). Although the carbon stock in plants quickly offset the untreated level, that in the soil remained depressed even in the older stands. This resulted in small differences in carbon stock of these stands with untreated dwarf bamboo stands. We conclude that natural regeneration following scarification could be a prime option for carbon sink management in the region. However, we should take a long rotation period (i.e. > 50-year) to ensure a carbon sink state. A potential of further improvements of the practice, including that reduce intensity of soil disturbance, was presented.
Rights: The original publication is available at
Type: article (author version)
Appears in Collections:北方生物圏フィールド科学センター (Field Science Center for Northern Biosphere) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 吉田 俊也

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