{"created":"2021-03-01T06:43:22.665354+00:00","id":25420,"links":{},"metadata":{"_buckets":{"deposit":"a581a626-0027-4fe4-9ff3-f6e754e08aec"},"_deposit":{"id":"25420","owners":[],"pid":{"revision_id":0,"type":"depid","value":"25420"},"status":"published"},"_oai":{"id":"oai:repository.dl.itc.u-tokyo.ac.jp:00025420","sets":["27:2466:2467:2549","9:504:2469:2550"]},"item_4_alternative_title_1":{"attribute_name":"その他のタイトル","attribute_value_mlt":[{"subitem_alternative_title":"The Influence of Large-sized Wheel-type Forestry Machines on the Residual Forest Land : A case study of selection cutting operations on a natural forest in Hokkaido"}]},"item_4_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"1996","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"26","bibliographicPageStart":"1","bibliographicVolumeNumber":"96","bibliographic_titles":[{"bibliographic_title":"東京大学農学部演習林報告"}]}]},"item_4_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"北海道の天然林内において，フェラーバンチャおよびグラップルスキッダによる材積伐採率54％の択伐作業および全木集材作業が林地，残存木，天然更新，植生などに与える影響について，伐採時とその後4年間にわたり調査を行った。その結果，1）残存木本数の54％になんらかの損傷が生じ，地表面積の56％が攪乱された。2）小径木は致命的損傷となる確率が高く，中・大径木では部分的損傷に留まることが多い。3）伐採木からの距離が近いほど損傷を受ける確率が高い。4）伐採4年後に健全な状態にある樹木は伐採前の蓄積の14％にすぎず，30％は枯死したか衰弱した状態にある。5）伐出に伴う地表攪乱は，ダケカンバの更新には効果が期待されるが，針葉樹の後継木確保のためには不十分である。以上のことから，大形車両系林業機械による択伐作業と全木集材では残存した森林に対する影響が大きく，針葉樹は成長を増進できずに衰弱して，広葉樹が優占する疎林となる。地表は攪乱されるものの，回復の早いクマイザサに覆われるため，針葉樹の天然更新は期待できない。持続的森林経営のためには後継樹の植え込みが必要である。大形機械による伐出作業を促進するためには損傷木の発生を少なくするため，伐採木周辺の残存木に配慮して，フェラーバンチャの伐採木までの移動方法や伐倒方法，グラップルスキッダの走行ルートを改善する必要がある。","subitem_description_type":"Abstract"},{"subitem_description":"A continuous research program into the influence of selection cutting and whole tree logging using a feller buncher and a grapple skidder on forest land, residual trees, natural regeneration and vegetation has been carried out over four years after cutting in a natural forest in Hokkaido. The results obtained were as follows: 1) 54% of the residual trees suffered from some damage and 56% of the surface of the forest land was disturbed. 2) In the case of small trees, the probability of fatal damage was high. Middle or large trees were damaged partially. 3) The closer to the felled tree, the higher the probability of damage. 4) The volume of healthy trees was only 14% of the stand volume before cutting, 30% of the stand volume was dead or declining because of logging damage. 5) The surface idsturbance by logging is expected to allow the natural regeneration of Betula ermanii, but it is not sufficient to ensure a coniferous succession. Accordingly, in case of selection cutting operations and whole tree logging using a large-sized wheel-type forestry machine, the influence is too severe on the residual stands. In particular, coniferous trees declined and in the future the forest will be an open forest covered with broad-leaved tress. The natural regeneration of conifers is not expected in spite of surface disturbance by logging because of the quick recovery of Sasa senanensis. So artificial planting of succeeding trees is needed for sustainable forest management. In order to promote the mechanization of logging operations, improvements in the routes of machine movement and the method of tree felling considering residual trees are indispensable.","subitem_description_type":"Abstract"}]},"item_4_full_name_3":{"attribute_name":"著者別名","attribute_value_mlt":[{"nameIdentifiers":[{"nameIdentifier":"54629","nameIdentifierScheme":"WEKO"}],"names":[{"name":"OHSATO, Shoichi"}]},{"nameIdentifiers":[{"nameIdentifier":"54630","nameIdentifierScheme":"WEKO"}],"names":[{"name":"KURAHASHI, Akio"}]},{"nameIdentifiers":[{"nameIdentifier":"54631","nameIdentifierScheme":"WEKO"}],"names":[{"name":"YAMAMOTO, Hirokazu"}]},{"nameIdentifiers":[{"nameIdentifier":"54632","nameIdentifierScheme":"WEKO"}],"names":[{"name":"OHASHI, Kunio"}]},{"nameIdentifiers":[{"nameIdentifier":"54633","nameIdentifierScheme":"WEKO"}],"names":[{"name":"NITAMI, Toshio"}]},{"nameIdentifiers":[{"nameIdentifier":"54634","nameIdentifierScheme":"WEKO"}],"names":[{"name":"OGASAWARA, Shigeo"}]},{"nameIdentifiers":[{"nameIdentifier":"54635","nameIdentifierScheme":"WEKO"}],"names":[{"name":"IGUCHI, Kazunobu"}]},{"nameIdentifiers":[{"nameIdentifier":"54636","nameIdentifierScheme":"WEKO"}],"names":[{"name":"SASAKI, Chubei"}]}]},"item_4_publisher_20":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"東京大学大学院農学生命科学研究科附属演習林"}]},"item_4_source_id_10":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AN00162451","subitem_source_identifier_type":"NCID"}]},"item_4_source_id_8":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"03716007","subitem_source_identifier_type":"ISSN"}]},"item_4_subject_15":{"attribute_name":"日本十進分類法","attribute_value_mlt":[{"subitem_subject":"610","subitem_subject_scheme":"NDC"}]},"item_4_text_21":{"attribute_name":"出版者別名","attribute_value_mlt":[{"subitem_text_value":"The Tokyo University Forests"}]},"item_4_text_4":{"attribute_name":"著者所属","attribute_value_mlt":[{"subitem_text_value":"東京大学農学部附属演習林千葉演習林"},{"subitem_text_value":"東京大学農学部附属演習林北海道演習林"},{"subitem_text_value":"東京大学農学部附属演習林研究部"},{"subitem_text_value":"元東京大学農学部附属演習林北海道演習林"},{"subitem_text_value":"University Forest in Chiba, Faculty of Agriculture, The University of Tokyo"},{"subitem_text_value":"University Forest in Hokkaido, Faculty of Agriculture, The University of Tokyo"},{"subitem_text_value":"Research Division of The University Forests, Faculty of Agriculture, The University of Tokyo"},{"subitem_text_value":"Formerly, University Forest in Hokkaido, Faculty of Agriculture, The University of Tokyo"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"大里, 正一"}],"nameIdentifiers":[{"nameIdentifier":"54621","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"倉橋, 昭夫"}],"nameIdentifiers":[{"nameIdentifier":"54622","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"山本, 博一"}],"nameIdentifiers":[{"nameIdentifier":"54623","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"大橋, 邦夫"}],"nameIdentifiers":[{"nameIdentifier":"54624","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"仁多見, 俊夫"}],"nameIdentifiers":[{"nameIdentifier":"54625","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"小笠原, 繁男"}],"nameIdentifiers":[{"nameIdentifier":"54626","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"井口, 和信"}],"nameIdentifiers":[{"nameIdentifier":"54627","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"佐々木, 忠兵衛"}],"nameIdentifiers":[{"nameIdentifier":"54628","nameIdentifierScheme":"WEKO"}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2017-06-09"}],"displaytype":"detail","filename":"esrh096001.pdf","filesize":[{"value":"2.1 MB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"esrh096001.pdf","url":"https://repository.dl.itc.u-tokyo.ac.jp/record/25420/files/esrh096001.pdf"},"version_id":"6a81fd87-5469-4a87-bff5-dfdcbca6d23d"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"大形林業機械","subitem_subject_scheme":"Other"},{"subitem_subject":"全木集材作業","subitem_subject_scheme":"Other"},{"subitem_subject":"残存木損傷","subitem_subject_scheme":"Other"},{"subitem_subject":"地表攪乱","subitem_subject_scheme":"Other"},{"subitem_subject":"天然更新","subitem_subject_scheme":"Other"},{"subitem_subject":"Large-sized forestry machine","subitem_subject_scheme":"Other"},{"subitem_subject":"Whole tree skidding operation","subitem_subject_scheme":"Other"},{"subitem_subject":"Damage to residual trees","subitem_subject_scheme":"Other"},{"subitem_subject":"Surface disturbance","subitem_subject_scheme":"Other"},{"subitem_subject":"Natural regeneration","subitem_subject_scheme":"Other"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"jpn"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"departmental bulletin paper","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"大形の車両系林業機械が林地に及ぼす影響 : 北海道の天然林における択伐作業の事例","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"大形の車両系林業機械が林地に及ぼす影響 : 北海道の天然林における択伐作業の事例"}]},"item_type_id":"4","owner":"1","path":["2550","2549"],"pubdate":{"attribute_name":"公開日","attribute_value":"2014-09-03"},"publish_date":"2014-09-03","publish_status":"0","recid":"25420","relation_version_is_last":true,"title":["大形の車両系林業機械が林地に及ぼす影響 : 北海道の天然林における択伐作業の事例"],"weko_creator_id":"1","weko_shared_id":null},"updated":"2022-12-19T04:03:40.410954+00:00"}