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スギの樹冠の変化量と幹材積成長量の関係
http://hdl.handle.net/10232/1603
http://hdl.handle.net/10232/1603682ebbcf-fcdb-4512-beb4-1dfd22c287f3
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
KJ00000068343.pdf (294.6 kB)
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| Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2015-06-04 | |||||
| タイトル | ||||||
| タイトル | スギの樹冠の変化量と幹材積成長量の関係 | |||||
| タイトル言語 | ja | |||||
| タイトル | ||||||
| タイトル | Relationship between Growth of Stem-Volume and Increment of Crown-Volume in Cryptomeria japonica | |||||
| タイトル言語 | en | |||||
| 著者 |
吉田, 茂二郎
× 吉田, 茂二郎 |
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| 言語 | ||||||
| 言語 | jpn | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | departmental bulletin paper | |||||
| 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 | |||||
| 要約 | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | The aim of this study is to describe rightly and concisely the relationship between growth of stemvolume and increment of crown-volume in case of the individual tree belonging to evenaged Sugi (Cryptomeria japonica)-stand. The crown-form is expressed by parabolic shape. y=α・x^<0.5> wherey : radius of crown (m) x : distance from crown-top (m) α : expanding coefficient of crown-radius The increment of crown-volume is expressed by the following equation (Fig.1). ΔCV=π/2・Cl_2・ Cr_2^2+π/3・(k_2-k_1)・(Cr_2^2+Cr_2・Cr_1+Cr_1^2)-π/2・Cl_1・Cr_1^2 where ΔCV : increment of crown-volume (m^3) Cl : crown-length (m) Cr : radius of crown (m) k : height to living branch (m) ^* subscripts 1 and 2 denote the measurement points, respectively. The growth of stem-volume is calculated by using the stem-volume equation with dbh and tree height data, in two measurement points. The linear relation between growth of stem-volume and increment of crown-volume in Cryptomeria japonica-stand is recognized on each crown-length class. Investigation of the relationship between growth of stem-volume and increment of crown-volume has brought us such an equation as in the following : ΔV=-0.0241+0.0020・ΔCV+0.0087・Cl coefficient of determination R^2=0.80 standard error Se=0.009 (m^3) where ΔV : grouth of stem-volume (m^3) ΔCV : increment of crown-volume (m^3) Cl : crown-length (m) It is expected that growth of stem-volume is in right proportion to increment of crown-volume and to crown-length, respectively. Based on the above mentioned items, it is hoped that we shall be able to describe the growth of individual tree in evenaged Sugi-stand. | |||||
| 内容記述言語 | en | |||||
| 収録雑誌名 |
ja : 鹿兒島大學農學部學術報告 en : Bulletin of the Faculty of Agriculture, Kagoshima University 巻 40, p. 29-35, 発行日 1990-03-15 |
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| 作成日 | ||||||
| 日付 | 1990-03-15 | |||||
| 日付タイプ | Issued | |||||
| ISSN | ||||||
| 収録物識別子タイプ | PISSN | |||||
| ISSN | 04530845 | |||||
| NII書誌ID（雑誌） | ||||||
| 収録物識別子タイプ | NCID | |||||
| NC ID | AN00040603 | |||||
| 出版タイプ | ||||||
| 出版タイプ | VoR | |||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
| NDC | ||||||
| 主題Scheme | NDC | |||||
| 主題 | 610 | |||||
| NIIsubject | ||||||
| 主題言語 | ja | |||||
| 主題Scheme | Other | |||||
| 主題 | 農学 | |||||
| 公開者・出版者 | ||||||
| 出版者 | 鹿児島大学 | |||||
| 出版者言語 | ja | |||||
| 公開者・出版者 | ||||||
| 出版者 | Kagoshima University | |||||
| 出版者言語 | en | |||||
