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A Note on the Fundamental Equation of Self-Thinning in the Logistic Theory of Plant Growth
http://hdl.handle.net/20.500.12000/11819
http://hdl.handle.net/20.500.12000/1181968d254ea-79d4-4987-9a43-816f0b883af1
名前 / ファイル | ライセンス | アクション |
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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 | A Note on the Fundamental Equation of Self-Thinning in the Logistic Theory of Plant Growth | |||||||||
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 | The fundamental equation of self-thinning, which was proposed in the logistic theory of\nplant growth for describing the density effect in self-thinning populations, is based on\nthe following two fundamental assumptions: one is that the growth of mean phytomass w\nfollows a general logistic equation; the other is that the final yield Y(t), which is pre\nscribed as the product of the asymptote of mean phytomass W(t) and density P , becomes\nconstant irrespective of P , i.e. the law of constant final yield is assumed. In the light\nof the basic principle of self-thinning that the relative growth rate of mean phytomass\n(l/u>) (dw/dt) is given by the sum of the relative growth rate of yield (1/y) (dy/dt) and\nthe relative mortality (-1/P) (dP/dt), the first assumption brings to the conclusion that the\nfinal yield Y(t) is not prescribed by W{t) P , but is prescribed by(l-tn/A (t))W(t) P\n(ro, relative mortality; A (f), coefficient of growth), whose value depends on density P\nexcept for the special case where both Wit) P and m are independent of P. This inevitable\nconsequence is in conflict with the prescription referring to the final yield Y(t) in the\nsecond assumption of the logistic theory of plant growth. As a result, it is suggested\nthat an alternative theory for the density effect in self-thinning populations should be\nnewly constructed to harmonize the assumption referring to the growth of mean phytomass\nwith the assumption referring to the law of constant final yield. | |||||||||
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/20.500.12000/11819 | |||||||||
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 64, p. 69-76, 発行日 1997-09 |