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アイテム
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履帯式ハーベスタ,フォーワーダによる列状間伐が残存木に与える影響
http://hdl.handle.net/2261/22709
http://hdl.handle.net/2261/22709801d3a13-27f8-43c0-8317-9ca05aca6088
名前 / ファイル | ライセンス | アクション |
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esrh098007.pdf (660.6 kB)
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Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
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公開日 | 2014-09-03 | |||||
タイトル | ||||||
タイトル | 履帯式ハーベスタ,フォーワーダによる列状間伐が残存木に与える影響 | |||||
言語 | ||||||
言語 | jpn | |||||
キーワード | ||||||
主題 | 履帯式ハーベスタ | |||||
主題Scheme | Other | |||||
キーワード | ||||||
主題 | ゴム履帯式フォーワーダ | |||||
主題Scheme | Other | |||||
キーワード | ||||||
主題 | 残存木 | |||||
主題Scheme | Other | |||||
キーワード | ||||||
主題 | 損傷 | |||||
主題Scheme | Other | |||||
キーワード | ||||||
主題 | 作業空間 | |||||
主題Scheme | Other | |||||
キーワード | ||||||
主題 | Tracked harvester | |||||
主題Scheme | Other | |||||
キーワード | ||||||
主題 | Rubber tracked forwarder | |||||
主題Scheme | Other | |||||
キーワード | ||||||
主題 | Residual stand | |||||
主題Scheme | Other | |||||
キーワード | ||||||
主題 | Damage | |||||
主題Scheme | Other | |||||
キーワード | ||||||
主題 | Working space | |||||
主題Scheme | Other | |||||
資源タイプ | ||||||
資源 | http://purl.org/coar/resource_type/c_6501 | |||||
タイプ | departmental bulletin paper | |||||
その他のタイトル | ||||||
その他のタイトル | A Line Thinning Operation with a Crawler Type Harvester and Forwarder Combination and Its Impact on the Residual Stand | |||||
著者 |
岩岡, 正博
× 岩岡, 正博× 有賀, 一広× 小林, 洋司 |
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著者別名 | ||||||
識別子 | 54562 | |||||
識別子Scheme | WEKO | |||||
姓名 | IWAOKA, Masahiro | |||||
著者別名 | ||||||
識別子 | 54563 | |||||
識別子Scheme | WEKO | |||||
姓名 | ARUGA, Kazuhiro | |||||
著者別名 | ||||||
識別子 | 54564 | |||||
識別子Scheme | WEKO | |||||
姓名 | KOBAYASHI, Hiroshi | |||||
著者所属 | ||||||
著者所属 | 東京大学大学院農学生命科学研究科森林科学専攻 | |||||
著者所属 | ||||||
著者所属 | Department of Forest Science, Graduate School of Agricultural and Life Sciences, The University of Tokyo | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | 履帯式エクスカベータをベースマシンとするハーベスタと,ゴム履帯式フォーワーダを用いて行われた1伐2残の列状間伐作業を対象として,残存木の損傷状況を調査した。ゴム履帯式フォーワーダは不整地において履帯が外れやすいため,ハーベスタの作業後に集材路を作設する必要があった。標準地調査の結果,損傷の大部分はハーベスタによる伐倒造材作業によって引き起こされたものであり,集材路作設や集材作業によって引き起こされたと確認できた例は少なかった。成長に支障があるほどの重度の損傷を受けた木の本数割合は全体の4%と少なかったが,材質の低下まで考えると全体の9%近くが影響を受けていた。これは1伐2残の列状間伐において,本数間伐率が40%以上になったのに等しい。検討の結果,損傷を減少させ,かつ損傷程度を軽くするためには,ハーベスタの作業空間を十分に確保することが有効であると考えられる。すなわち,既存の林分においては2伐4残などのように伐開幅が広くなるような作業方法を選択すること,新規植栽林分においては植え幅を2~2.5mに広げることが有効である。 | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | The damage to the residual stand caused by a line thinning operation with a tracked excavator based harvester and a rubber tracked forwarder was investigated. The rubber tracks of the forwarder were so easily detached from the wheels that the forwarder needs skid trails constructed after the harvesting operation by a tractor. The observations at sample plots show that a greater part of the damage was caused by the harvester operation while the rest of the damage, caused by tractor or forwarder operation, was minimal. The number of seriously damaged trees which will be retarded in growth was about four percent. The damaged trees in which timber quality will be reduced was almost nine percent. This means that the thinning rate exceeds forty percent when the operation was one row cut and tow rows remaining. Sufficient space for harvester operation is thought to be effective in decreasing the number of damaged trees and in lightening the damage. The improvement of work method to widen the thinning width in existing stands, such as two rows cut and four rows remaining, will be effective for this aim. With this method, 2 to 2.5 meters planting distance will be effective for newly planted stands. | |||||
書誌情報 |
東京大学農学部演習林報告 巻 98, p. 151-160, 発行日 1997 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 03716007 | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AN00162451 | |||||
日本十進分類法 | ||||||
主題 | 610 | |||||
主題Scheme | NDC | |||||
出版者 | ||||||
出版者 | 東京大学大学院農学生命科学研究科附属演習林 | |||||
出版者別名 | ||||||
The Tokyo University Forests |