{"created":"2023-05-15T15:25:39.633225+00:00","id":13385,"links":{},"metadata":{"_buckets":{"deposit":"516a1b4a-a240-4cf9-910f-1a52e6c3da27"},"_deposit":{"created_by":3,"id":"13385","owners":[3],"pid":{"revision_id":0,"type":"depid","value":"13385"},"status":"published"},"_oai":{"id":"oai:sucra.repo.nii.ac.jp:00013385","sets":["94:426"]},"author_link":["16485"],"item_119_biblio_info_8":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2009","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"1","bibliographicPageEnd":"70","bibliographicPageStart":"59","bibliographicVolumeNumber":"5","bibliographic_titles":[{"bibliographic_title":"LANDSCAPE AND ECOLOGICAL ENGINEERING"}]}]},"item_119_date_31":{"attribute_name":"作成日","attribute_value_mlt":[{"subitem_date_issued_datetime":"2009-02-26","subitem_date_issued_type":"Created"}]},"item_119_description_17":{"attribute_name":"関連サイト","attribute_value_mlt":[{"subitem_description":"http://www.springerlink.com/content/un412u8nn8w44357/ | http://www.springerlink.com/content/un412u8nn8w44357/","subitem_description_type":"Other"}]},"item_119_description_19":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"To elucidate tree breakage conditions with different breaking mechanisms, i.e., moment by drag force, local scour, and degradation of the substrate around trees, field surveys were conducted after a flood event (September 2007 flood due to Typhoon 9) in the Tamagawa River, Japan. Trees in a river have two main breaking mechanisms during a flood event, moment by fluid force and erosion of the substrate. Moment by fluid force causes two breaking phenomena, trunk damage (bending, breakage) and overturning. Trunk bending or breakage can be expressed as a function of d (c) , where d is the trunk diameter at breast height and the power c equals 3 for trunk bending or breakage, and approximately 2 for overturning. Smaller diameter trees experienced trunk breakage, but larger trees were overturned. The range for these two breaking patterns changes with the substrate condition. If severe scouring has occurred, the threshold for overturning moment can be quite small. Tree overturning occurred mostly on the bank side of the gravel bar; however, some trees, especially Robinia pseudo acacia and Morus bombycis, were overturned if the substrate was a thin deposited soil or silt layer on gravel. The roots were anchored in the small-particle deposited layer in that case. As for the erosion of the substrate, the tree-breaking patterns can be classified into three types depending on the relationship between the nondimensionalized bed shear stress of d (50) and d (84), the representative grain diameters at which 50 and 84% of the volume of the material, respectively, is finer. The nondimensionalized shear stress of d (84) is an important parameter for discussing the rehabilitation of the gravel bed bar. The boundary region for tree overturning can be changed by the effects of plant cover and debris attachment.","subitem_description_type":"Abstract"}]},"item_119_description_29":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"subitem_description":"text","subitem_description_type":"Other"}]},"item_119_description_30":{"attribute_name":"フォーマット","attribute_value_mlt":[{"subitem_description":"application/pdf","subitem_description_type":"Other"}]},"item_119_publisher_11":{"attribute_name":"出版者名","attribute_value_mlt":[{"subitem_publisher":"SPRINGER"}]},"item_119_relation_16":{"attribute_name":"DOI","attribute_value_mlt":[{"subitem_relation_type":"isVersionOf","subitem_relation_type_id":{"subitem_relation_type_id_text":"info:doi/10.1007/s11355-008-0060-5","subitem_relation_type_select":"DOI"}}]},"item_119_source_id_14":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"18601871","subitem_source_identifier_type":"ISSN"}]},"item_119_text_27":{"attribute_name":"版","attribute_value_mlt":[{"subitem_text_value":"[著者版]"}]},"item_119_text_3":{"attribute_name":"著者 ローマ字","attribute_value_mlt":[{"subitem_text_value":"Tanaka, Norio"},{"subitem_text_value":"Yagisawa, Junji"}]},"item_119_text_32":{"attribute_name":"アイテムID","attribute_value_mlt":[{"subitem_text_value":"A1002830"}]},"item_119_text_4":{"attribute_name":"著者 所属","attribute_value_mlt":[{"subitem_text_value":"埼玉大学大学院理工学研究科環境科学・社会基盤部門"}]},"item_119_text_5":{"attribute_name":"著者 所属(別言語)","attribute_value_mlt":[{"subitem_text_value":"Graduate School of Science and Engineering, Saitama University"},{"subitem_text_value":"Graduate School of Science and Engineering, Saitama University"}]},"item_119_text_9":{"attribute_name":"年月次","attribute_value_mlt":[{"subitem_text_value":"2009-2"}]},"item_119_version_type_28":{"attribute_name":"著者版フラグ","attribute_value_mlt":[{"subitem_version_resource":"http://purl.org/coar/version/c_ab4af688f83e57aa","subitem_version_type":"AM"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"田中, 規夫"},{"creatorName":"タナカ, ノリオ","creatorNameLang":"ja-Kana"}],"nameIdentifiers":[{"nameIdentifier":"16485","nameIdentifierScheme":"WEKO"},{"nameIdentifier":"afMZsNBx","nameIdentifierScheme":"研究者総覧","nameIdentifierURI":"http://s-read.saitama-u.ac.jp/researchers/pages/researcher/afMZsNBx"}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2018-01-24"}],"displaytype":"detail","filename":"A1002830.pdf","filesize":[{"value":"2.6 MB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"A1002830.pdf","url":"https://sucra.repo.nii.ac.jp/record/13385/files/A1002830.pdf"},"version_id":"ffce2f34-6adf-45d1-96ac-e45c6cfadcba"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"Tree-breaking pattern","subitem_subject_scheme":"Other"},{"subitem_subject":"Forestation","subitem_subject_scheme":"Other"},{"subitem_subject":"Regeneration","subitem_subject_scheme":"Other"},{"subitem_subject":"Root zone","subitem_subject_scheme":"Other"},{"subitem_subject":"Moment by drag force","subitem_subject_scheme":"Other"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"eng"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"journal article","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"Effects of tree characteristics and substrate condition on critical breaking moment of trees due to heavy flooding","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Effects of tree characteristics and substrate condition on critical breaking moment of trees due to heavy flooding"}]},"item_type_id":"119","owner":"3","path":["426"],"pubdate":{"attribute_name":"公開日","attribute_value":"2009-02-26"},"publish_date":"2009-02-26","publish_status":"0","recid":"13385","relation_version_is_last":true,"title":["Effects of tree characteristics and substrate condition on critical breaking moment of trees due to heavy flooding"],"weko_creator_id":"3","weko_shared_id":-1},"updated":"2023-05-16T12:36:24.832278+00:00"}