A General Theory for Species Coexistence in Various Forests : the Diffusion Model for Plant Communities
A General Theory for Species Coexistence in Various Forests : the Diffusion Model for Plant Communities
批准号:
06640822
负责人:
HARA Toshihiko
金额:
$1.34万
依托单位国家:
日本
项目类别:
Grant-in-Aid for Scientific Research (C)
财政年份:
1994
资助国家:
日本
项目状态:
已结题
起止时间:
1994 至 1996
中文摘要
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英文摘要
I investigated growth dynamics, competition and recruitment processes in the following climax forests : sub-boreal forest on Mt.Taisetsu, Hokkaido (Abies sachalinensis, Picea yezoensis), warm-temperate forest in Miyakejima island, Tokyo (Castanopsis cuspidata), sub-alpine forest on Mt.Kitayatsugatake in Shinshu (Abies veitchii, A.mariesii) ; and in an early-successional Betula ermanii forest in Ashibetsu, Hokkaido. I analyzed the growth data based on the diffusion model (Hara 1984), and found that (i) in the climax forests, both intra-and interspecific competition between canopy trees was much weaker than that between saplings and the mode of competition was usually symmetric ; (ii) sapling recruitment process was determined by the species-specific combination of stand structural attributes such as fallen-log abundance, Sasa density in the forest floor ; (iii) in the early-successional Betula ermanii forest, competition between canopy trees was intense and asymmetric ; (iv) these results obtained in the field were confirmed by the canopy photosynthesis model, i.e.broad-leaved trees tend to show intense and asymmetric competition while coniferous trees weak and symmetric competition ; (v) it was shown by a theoretical model that the effect of disturbances on spatial pattern dynamics of plant communities is larger under symmetric competition than under asymmetric competition ; (vi) it was concluded that growth and spatial pattern dynamics are governed by deterministic factors (competition) in early-successional forests while these are governed by stochastic factors (disturbances) in climax forests.
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Yokozawa, M.: "Foliage profile,size structure and stem diameter-plant height relationship in crowded plant populations" Annals of Botany. 76. 271-285 (1995)
横泽,M.:“拥挤植物种群中的叶子轮廓、大小结构和茎直径-植物高度关系”植物学年鉴。
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Yokozawa, M.: "Crown architecture and species coexistence in plant communities" Annals of Botany. 78. 437-447 (1996)
横泽,M.:“植物群落中的冠结构和物种共存”植物学年鉴。
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Hara, T.: "Dynamic process, spatial pattern and species coexistence in plants." Folia Geobot.Phytotax.30. 529-533 (1995)
Hara, T.:“植物的动态过程、空间格局和物种共存。”
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Kubota, Y.: "Recruitment processes and species coexistence in a sub-boreal forest in northern Japan." Annals of Botany. 78. 741-748 (1996)
Kubota, Y.:“日本北部亚寒带森林的招募过程和物种共存。”
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共 23 条
The Population Decrease of Hokkaido,Sapporo City, their Future:System Development for Regional Population Analysis
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批准号:15K03849
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项目类别:Grant-in-Aid for Scientific Research (C)
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资助金额:$1.66万
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财政年份:2015
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负责人:HARA Toshihiko
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依托单位:
Explication of Net-Migration Rates by Marital Status In Sapporo
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财政年份:2011
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负责人:HARA Toshihiko
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依托单位:
Fertility Decline of Sapporo : Design of System Dynamic Model for Fertility Development in the Government-Designated Major Cities in Japan
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批准号:19530448
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项目类别:Grant-in-Aid for Scientific Research (C)
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资助金额:$2.16万
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财政年份:2007
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负责人:HARA Toshihiko
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Fertility Decline in Hokkaido -Design of System Dynamics Model for the Declining Regional Fertility
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批准号:15530335
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项目类别:Grant-in-Aid for Scientific Research (C)
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资助金额:$1.6万
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财政年份:2003
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负责人:HARA Toshihiko
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依托单位:
Environmental variation and forest dynamics in the terrestrial regions around the Sea of Okhotsk
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批准号:14405002
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项目类别:Grant-in-Aid for Scientific Research (B)
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资助金额:$9.34万
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财政年份:2002
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负责人:HARA Toshihiko
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依托单位:
Vegetation dynamics and environmental variation in Kamchatka
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批准号:11691166
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项目类别:Grant-in-Aid for Scientific Research (A)
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资助金额:$12.42万
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财政年份:1999
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负责人:HARA Toshihiko
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依托单位:
Design of a System Dynamics Model for Problems in a Remote, Depopulated Rural Community
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批准号:09610195
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项目类别:Grant-in-Aid for Scientific Research (C)
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资助金额:$1.34万
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财政年份:1997
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负责人:HARA Toshihiko
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依托单位:
Species diversity in grassland plant communities
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批准号:08044192
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项目类别:Grant-in-Aid for international Scientific Research
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资助金额:$4.74万
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财政年份:1996
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负责人:HARA Toshihiko
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依托单位:
Size-structure stability and species coexistence in plant communities
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批准号:03304003
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项目类别:Grant-in-Aid for Co-operative Research (A)
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资助金额:$2.88万
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财政年份:1991
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负责人:HARA Toshihiko
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依托单位:
海外基金