{"created":"2021-03-01T06:43:25.156331+00:00","id":25458,"links":{},"metadata":{"_buckets":{"deposit":"0dbd4530-0e61-427d-bfb6-cc13d128c14d"},"_deposit":{"id":"25458","owners":[],"pid":{"revision_id":0,"type":"depid","value":"25458"},"status":"published"},"_oai":{"id":"oai:repository.dl.itc.u-tokyo.ac.jp:00025458","sets":["27:2466:2467:2557","9:504:2469:2558"]},"item_4_alternative_title_1":{"attribute_name":"その他のタイトル","attribute_value_mlt":[{"subitem_alternative_title":"Thinning Operation Systems with a Mobile Tower-Yarder and a Profitable Forest-Road Density"}]},"item_4_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"1994","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"197","bibliographicPageStart":"175","bibliographicVolumeNumber":"92","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":"近年，全国各地で高性能林業機械を導入して新たな林業を展開している。今回はそのなかで地形が急峻な山岳林における間伐材搬出等の集材作業仕組みとして評価が高い，タワーヤーダによる間伐作業における適切な作業システムと適正路網密度について調査し，結果を得た。即ち，間伐では単木材積が大きいほど能率的であり，またクランプ式搬器によって集材作業功程が高くなり，横取り作業の効率も3倍程度向上することが分かった。タワーヤーダによる集材作業システムを前提にした適正路網密度は40m/ha以上の高密度となった。","subitem_description_type":"Abstract"},{"subitem_description":"Recentry, high quality forest machines like harvesters, feller-bunchers, processors and mobile tower-yarders have been used in Japanese forest since several years ago in order to improve its difficult forest operational conditions. In this paper we introduce an outline and results of thinning operation systems with a mobile tower-yader and a profitable forestroad density, that were performed in Tokyo University Forest at Chichibu and Chiba. A profitable forest-road density is over 40 m/ha for thinning operation systems with a mobile tower-yarder in study area A, B.","subitem_description_type":"Abstract"}]},"item_4_full_name_3":{"attribute_name":"著者別名","attribute_value_mlt":[{"nameIdentifiers":[{"nameIdentifier":"54831","nameIdentifierScheme":"WEKO"}],"names":[{"name":"PARK, Sangjun"}]},{"nameIdentifiers":[{"nameIdentifier":"54832","nameIdentifierScheme":"WEKO"}],"names":[{"name":"IWAOKA, Masahiro"}]},{"nameIdentifiers":[{"nameIdentifier":"54833","nameIdentifierScheme":"WEKO"}],"names":[{"name":"SAKAI, Hideo"}]},{"nameIdentifiers":[{"nameIdentifier":"54834","nameIdentifierScheme":"WEKO"}],"names":[{"name":"KOBAYASHI, Hiroshi"}]}]},"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":"東京大学農学部林学科"},{"subitem_text_value":"Department of Forestry, Faculty of Agriculture, The University of Tokyo"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"朴, 相俊"}],"nameIdentifiers":[{"nameIdentifier":"54827","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"岩岡, 正博"}],"nameIdentifiers":[{"nameIdentifier":"54828","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"酒井, 秀夫"}],"nameIdentifiers":[{"nameIdentifier":"54829","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"小林, 洋司"}],"nameIdentifiers":[{"nameIdentifier":"54830","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":"esrh092010.pdf","filesize":[{"value":"1.9 MB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"esrh092010.pdf","url":"https://repository.dl.itc.u-tokyo.ac.jp/record/25458/files/esrh092010.pdf"},"version_id":"8e4160a2-24a1-4480-af15-9e1ffa49cd1a"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"タワーヤーダ","subitem_subject_scheme":"Other"},{"subitem_subject":"間伐作業システム","subitem_subject_scheme":"Other"},{"subitem_subject":"路網密度","subitem_subject_scheme":"Other"},{"subitem_subject":"Mobile tower-yarder","subitem_subject_scheme":"Other"},{"subitem_subject":"Thinning operation systems","subitem_subject_scheme":"Other"},{"subitem_subject":"Forest-road density","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":"タワーヤーダーによる間伐作業システムと適正路網密度","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"タワーヤーダーによる間伐作業システムと適正路網密度"}]},"item_type_id":"4","owner":"1","path":["2558","2557"],"pubdate":{"attribute_name":"公開日","attribute_value":"2014-09-03"},"publish_date":"2014-09-03","publish_status":"0","recid":"25458","relation_version_is_last":true,"title":["タワーヤーダーによる間伐作業システムと適正路網密度"],"weko_creator_id":"1","weko_shared_id":null},"updated":"2022-12-19T04:03:42.136570+00:00"}