{"created":"2021-03-01T07:15:31.148837+00:00","id":53915,"links":{},"metadata":{"_buckets":{"deposit":"c1abae3d-99fb-4066-96ac-6ce8804f118f"},"_deposit":{"id":"53915","owners":[],"pid":{"revision_id":0,"type":"depid","value":"53915"},"status":"published"},"_oai":{"id":"oai:repository.dl.itc.u-tokyo.ac.jp:00053915","sets":["27:2466:2467:8343","9:504:2469:8344"]},"item_4_alternative_title_1":{"attribute_name":"その他のタイトル","attribute_value_mlt":[{"subitem_alternative_title":"Current situation of Cryptomeria japonica (Sugi) plantations aged over 100 years at the University of Tokyo Chiba Forest, Japan"}]},"item_4_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2020-03-16","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"36","bibliographicPageStart":"17","bibliographicVolumeNumber":"142","bibliographic_titles":[{"bibliographic_title":"東京大学農学部演習林報告 = Bulletin of The University of Tokyo Forests"}]}]},"item_4_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"本研究では，東京大学千葉演習林の100 年生超スギ人工林を対象として，資源状況と林分構造に関する現状と特徴の把握を行った。スギの林分材積と平均胸高直径（DBH）の平均値±標準偏差は，それぞれ960.2 ± 271.1m3/ha と46.4 ± 10.6cm であった。スギ林分材積と平均DBH ともに大きなばらつきがみられ，林齢との間に有意な相関は認められなかった。平均DBH，平均樹高，立木本数密度，林分材積を用いたクラスター分析の結果から，100 年生超スギ人工林を次の3 つのグループに区分した。A）平均DBH が大きく，林分材積は中程度の大きさの林分，B）平均DBH，林分材積とも大きい林分，C）平均DBH，材積とも小さい林分。林分構造指標を比較したところ，スギの平均DBH と平均樹高，林分材積にグループ間で有意な違いがみられた。これまでの密度管理や地位の違いがスギ人工林の現状に影響したものと考えられる。一方，林分胸高断面積や林分材積が比較的小さな高齢人工林であっても，林内に天然更新した木本の多様度や下層植生の被度は必ずしも高くはない可能性も示唆された。","subitem_description_type":"Abstract"},{"subitem_description":"We studied the current status and characteristics of stand resource and structure of Cryptomeria japonica (ʻSugiʼ in Japanese) plantations aged over 100 years at the University of Tokyo Chiba Forest (UTCBF), central Japan. The mean and standard deviation of sugi stand volume and average diameter at breast height (DBH) were 960.2 ± 271.1 m3/ha and 46.4 ± 10.6 cm, respectively. The sugi stand volume and average DBH showed large variations and there were no significant correlations with stand age. Using cluster analysis with mean DBH, mean tree height, stem density and stand volume, our study sites can be classified into three stand groups: A) Stands with relatively large average DBH but moderate stand volume, B) Stands with both relatively large average DBH and stand volume, and C) Stands with both relatively small average DBH and stand volume. There was a significant difference between the stand groups for average DBH, mean tree height and stand volume. The current status of old sugi plantations may have been largely influenced by stand density control as well as site quality. The diversity of naturally-grown woody plants and floor vegetation coverage were not so high, even in the old sugi plantations with relatively low basal area and stand volume.","subitem_description_type":"Abstract"}]},"item_4_description_6":{"attribute_name":"内容記述","attribute_value_mlt":[{"subitem_description":"論文","subitem_description_type":"Other"}]},"item_4_full_name_3":{"attribute_name":"著者別名","attribute_value_mlt":[{"nameIdentifiers":[{"nameIdentifier":"160011","nameIdentifierScheme":"WEKO"}],"names":[{"name":"Hashimoto, Shinta"}]},{"nameIdentifiers":[{"nameIdentifier":"160012","nameIdentifierScheme":"WEKO"}],"names":[{"name":"Owari, Toshiaki"}]},{"nameIdentifiers":[{"nameIdentifier":"160013","nameIdentifierScheme":"WEKO"}],"names":[{"name":"Karukome  Tsutomu"}]},{"nameIdentifiers":[{"nameIdentifier":"160014","nameIdentifierScheme":"WEKO"}],"names":[{"name":"Chishima, Takeshi"}]},{"nameIdentifiers":[{"nameIdentifier":"160015","nameIdentifierScheme":"WEKO"}],"names":[{"name":"Mitsugi, Mitsukazu"}]},{"nameIdentifiers":[{"nameIdentifier":"160016","nameIdentifierScheme":"WEKO"}],"names":[{"name":"Tsurumi, Yasuyuki"}]},{"nameIdentifiers":[{"nameIdentifier":"160017","nameIdentifierScheme":"WEKO"}],"names":[{"name":"Suzuki, Masanori"}]},{"nameIdentifiers":[{"nameIdentifier":"160018","nameIdentifierScheme":"WEKO"}],"names":[{"name":"Yonemichi, Takashi"}]},{"nameIdentifiers":[{"nameIdentifier":"160019","nameIdentifierScheme":"WEKO"}],"names":[{"name":"Tsukagoshi, Takeshi"}]},{"nameIdentifiers":[{"nameIdentifier":"160020","nameIdentifierScheme":"WEKO"}],"names":[{"name":"Adachi, Yasumasa"}]},{"nameIdentifiers":[{"nameIdentifier":"160021","nameIdentifierScheme":"WEKO"}],"names":[{"name":"Murakawa, Isao"}]},{"nameIdentifiers":[{"nameIdentifier":"160022","nameIdentifierScheme":"WEKO"}],"names":[{"name":"Oishi, Satoru"}]},{"nameIdentifiers":[{"nameIdentifier":"160023","nameIdentifierScheme":"WEKO"}],"names":[{"name":"Toyama, Keisuke"}]}]},"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_select_14":{"attribute_name":"著者版フラグ","attribute_value_mlt":[{"subitem_select_item":"publisher"}]},"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_text_21":{"attribute_name":"出版者別名","attribute_value_mlt":[{"subitem_text_value":"The University of Tokyo Forests"}]},"item_4_text_4":{"attribute_name":"著者所属","attribute_value_mlt":[{"subitem_text_value":"元東京大学農学部森林環境資源科学専修"},{"subitem_text_value":"Formerly Major in Forest Environmental and Resource Science, Faculty of Agriculture, The University of Tokyo"},{"subitem_text_value":"東京大学大学院農学生命科学研究科附属演習林千葉演習林"},{"subitem_text_value":"The University of Tokyo Chiba Forest, Graduate School of Agricultural and Life Sciences, The University of Tokyo"},{"subitem_text_value":"東京大学大学院農学生命科学研究科附属演習林秩父演習林"},{"subitem_text_value":"The University of Tokyo Chichibu Forest, Graduate School of Agricultural and Life Sciences, The University of Tokyo"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"橋本, 晋太"}],"nameIdentifiers":[{"nameIdentifier":"159998","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"尾張, 敏章"}],"nameIdentifiers":[{"nameIdentifier":"159999","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"軽込, 勉"}],"nameIdentifiers":[{"nameIdentifier":"160000","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"千嶋, 武"}],"nameIdentifiers":[{"nameIdentifier":"160001","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"三次, 充和"}],"nameIdentifiers":[{"nameIdentifier":"160002","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"鶴見, 康幸"}],"nameIdentifiers":[{"nameIdentifier":"160003","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"鈴木, 祐紀"}],"nameIdentifiers":[{"nameIdentifier":"160004","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"米道, 学"}],"nameIdentifiers":[{"nameIdentifier":"160005","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"塚越, 剛史"}],"nameIdentifiers":[{"nameIdentifier":"160006","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"阿達, 康眞"}],"nameIdentifiers":[{"nameIdentifier":"160007","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"村川, 功雄"}],"nameIdentifiers":[{"nameIdentifier":"160008","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"大石, 諭"}],"nameIdentifiers":[{"nameIdentifier":"160009","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"當山, 啓介"}],"nameIdentifiers":[{"nameIdentifier":"160010","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":"2020-03-16"}],"displaytype":"detail","filename":"esrh142002.pdf","filesize":[{"value":"2.5 MB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"esrh142002.pdf","url":"https://repository.dl.itc.u-tokyo.ac.jp/record/53915/files/esrh142002.pdf"},"version_id":"8afa6637-226c-4d87-91ec-80b6969742cc"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"スギ","subitem_subject_scheme":"Other"},{"subitem_subject":"森林資源","subitem_subject_scheme":"Other"},{"subitem_subject":"高齢人工林","subitem_subject_scheme":"Other"},{"subitem_subject":"林分構造","subitem_subject_scheme":"Other"},{"subitem_subject":"植生多様度","subitem_subject_scheme":"Other"},{"subitem_subject":"Cryptomeria japonica","subitem_subject_scheme":"Other"},{"subitem_subject":"forest resource","subitem_subject_scheme":"Other"},{"subitem_subject":"old plantation","subitem_subject_scheme":"Other"},{"subitem_subject":"stand structure","subitem_subject_scheme":"Other"},{"subitem_subject":"vegetation diversity","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":"東京大学千葉演習林における100年生超スギ人工林の現状","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"東京大学千葉演習林における100年生超スギ人工林の現状"}]},"item_type_id":"4","owner":"1","path":["8344","8343"],"pubdate":{"attribute_name":"公開日","attribute_value":"2020-03-16"},"publish_date":"2020-03-16","publish_status":"0","recid":"53915","relation_version_is_last":true,"title":["東京大学千葉演習林における100年生超スギ人工林の現状"],"weko_creator_id":"1","weko_shared_id":2},"updated":"2022-12-19T04:30:26.700138+00:00"}