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間伐が樹冠の安定性に及ぼす影響の予測
http://hdl.handle.net/10232/1551
http://hdl.handle.net/10232/15512385ce25-d2d2-4bd2-ab8c-e7a60c36e24c
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
KJ00000068497.pdf (694.5 kB)
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| Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2015-03-31 | |||||
| タイトル | ||||||
| タイトル | 間伐が樹冠の安定性に及ぼす影響の予測 | |||||
| タイトル言語 | ja | |||||
| タイトル | ||||||
| タイトル | Simulation of the Thinning Effects on the Stability of Crowns | |||||
| タイトル言語 | en | |||||
| 著者 |
水永, 博己
× 水永, 博己 |
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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 | To clarify the thinning effects on the stability of crowns, some changes in the stability of crowns after thinning were simulated in sixteen sorts of thinning plans by the canopy dynamic model. Both the height and the eccentricity of the center of gravity of a tree's foliage were used as indexes of the stability of a crown. The results of simulation were summarized as in the following : 1. The thinning intensity largely effected the stability of crowns. The risings of center of gravity accompanying with the tree-height-growth were reduced in accordance with an increasing in the thinning ratio. This result suggests the possibility of keeping the vertical stability of crowns by the execution of intensive thinning. The relative frequency of occurrence of the trees supplied with changing eccentricity during 5 years after the thinning, increased linearly with the thinning ratio. 2. The upper and the all storied thinning reduced eccentricity more significantly than other thinning systems did. The cutting of the trees which were large enough to suppress the others was deemed to be effective to keep the horizontal stability of crowns. 3. The line thinning showed less effects on the individual foliage weight than other thinning systems did. Consequently, the planning of the thinning ratio by using the stand density control diagram was deemed to be inadaptable to the line thinning system. 4. The line thinning enlarged the eccentricity more than other thinning systems did, showing the tendency to lose the horizontal stability of crowns. | |||||
| 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 48, p. 23-30, 発行日 1998-03-31 |
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| 作成日 | ||||||
| 日付 | 1998-03-31 | |||||
| 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 | |||||
