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Mathematical and Biological Considerations on Yield- and Competition-Density Effects in Self-thinning Plant Populations
http://hdl.handle.net/20.500.12000/11817
http://hdl.handle.net/20.500.12000/118175a4b25a2-7602-4a86-9d31-b433595bcc33
名前 / ファイル | ライセンス | アクション |
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No66p071.pdf
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Item type | デフォルトアイテムタイプ(フル)(1) | |||||||||
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公開日 | 2009-08-13 | |||||||||
タイトル | ||||||||||
タイトル | Mathematical and Biological Considerations on Yield- and Competition-Density Effects in Self-thinning Plant Populations | |||||||||
言語 | en | |||||||||
作成者 |
Hagihara, Akio
× Hagihara, Akio
× 萩原, 秋男
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アクセス権 | ||||||||||
アクセス権 | open access | |||||||||
アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||||||
内容記述 | ||||||||||
内容記述タイプ | Other | |||||||||
内容記述 | A mathematical model for describing the density effect occurring in self-thinning\npopulations is developed on the basis of the following three basic assumptions: (1)\nthe growth of yield follows the general logistic equation; (2) final yield becomes\nconstant irrespective of initial density; and (3) there exists a functional relationship\nbetween actual and initial densities. The resultant equation takes the same reciprocal form as the reciprocal equation derived from Shinozaki-Kira's theory, i.e., the\nlogistic theory of the C-D effect, which deals with the density effect occurring in nonself-thinning populations. It is, however, recognized that one of the two coefficients is quite different in mathematical interpretation between the two reciprocal\nequations based on the present theory and the logistic theory of the C-D effect, respectively. The present conclusion is consistent with the empirical facts that the reciprocal relationship between yield (or mean phytomass) and density is discernible\nin not only nonself-thinning populations, but also self-thinning populations. The\npresent model is expected to systematically interpret underlying mechanisms be\ntween the density effect, which is observed at a time constant among populations\nvarying in initial density, and self-thinning, which is observed along a time continuum in any given population. | |||||||||
内容記述 | ||||||||||
内容記述タイプ | Other | |||||||||
内容記述 | 紀要論文 | |||||||||
出版者 | ||||||||||
言語 | ja | |||||||||
出版者 | 琉球大学理学部 | |||||||||
言語 | ||||||||||
言語 | eng | |||||||||
資源タイプ | ||||||||||
資源タイプ | departmental bulletin paper | |||||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||||||
出版タイプ | ||||||||||
出版タイプ | VoR | |||||||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||||||
識別子 | ||||||||||
識別子 | http://hdl.handle.net/20.500.12000/11817 | |||||||||
識別子タイプ | HDL | |||||||||
収録物識別子 | ||||||||||
収録物識別子タイプ | ISSN | |||||||||
収録物識別子 | 0286-9640 | |||||||||
収録物識別子 | ||||||||||
収録物識別子タイプ | NCID | |||||||||
収録物識別子 | AN00250774 | |||||||||
収録物名 | ||||||||||
言語 | ja | |||||||||
収録物名 | 琉球大学理学部紀要 | |||||||||
収録物名 | ||||||||||
言語 | en | |||||||||
収録物名 | Bulletin of the College of Science. University of the Ryukyus | |||||||||
書誌情報 |
号 66, p. 71-79, 発行日 1998-09 |