{"created":"2021-03-01T06:43:18.196642+00:00","id":25351,"links":{},"metadata":{"_buckets":{"deposit":"951ab611-5e9d-4fb6-8b47-a88e471b26d8"},"_deposit":{"id":"25351","owners":[],"pid":{"revision_id":0,"type":"depid","value":"25351"},"status":"published"},"_oai":{"id":"oai:repository.dl.itc.u-tokyo.ac.jp:00025351","sets":["27:2466:2467:2529","9:504:2469:2530"]},"item_4_alternative_title_1":{"attribute_name":"その他のタイトル","attribute_value_mlt":[{"subitem_alternative_title":"Quantitative Comparison of Geomorphological Features among The Tokyo University Forests in Hokkaido, Chichibu, Chiba and Aichi Using a 50m Mesh Digital Elevation Model"}]},"item_4_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2001","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"89","bibliographicPageStart":"77","bibliographicVolumeNumber":"106","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":"東京大学大学院農学生命科学研究科附属北海道演習林，秩父演習林，千葉演習林，愛知演習林の4演習林は異なる気候帯に位置し，それぞれ特徴的な地質を持ち，植生にも各演習林の特色が見られるため，それらの独自色を生かした研究がなされている。地形の特徴も演習林毎に異なることが認識されてはいたが，定性的な域を出てはいなかった。今回，50mメッシュ数値標高モデル（DEM:Digital Elevation Model）を用いて演算した，1kmグリッド間隔傾斜，50mグリッド間隔ラプラシアンの地形量パラメータを組合せた地形評価により演習林の地形特性の違いを表した。1kmグリッド間隔傾斜は山地としての大きな傾きを50mグリッド間隔ラプラシアンは地表面の凹凸を数量的に表す指標として用い，第三次地域区画に対応する1kmメッシュ毎の数値評価をした。各演習林内のメッシュが主に分布する数値領域は，北海道演習林は1km間隔傾斜15度以下，50m間隔ラプラシアン0.4以下の領域，秩父演習林は1km間隔傾斜15度以上，50m間隔ラプラシアン0.4以上の領域，千葉演習林は1km間隔傾斜10度以下，50m間隔ラプラシアン0.5以上の領域，愛知演習林は1km間隔傾斜15度以下，50m間隔ラプラシアン0.4以上の領域である。これより，北海道演習林は緩傾斜で表面の凹凸が少ない，秩父演習林は急傾斜大起伏，千葉演習林は1km規模では平らだが斜面長が短い急な斜面で構成されている，愛知演習林は同じく大きな山地としての傾きは小さいが細かな急斜面で構成されているというそれぞれの地形の特徴が定量的に示された。","subitem_description_type":"Abstract"},{"subitem_description":"Each of The Tokyo University Forests in Hokkaido, Chichibu, Chiba and Aichi located in different climatic zones, have typical geology and vegetation; Studies concerning these characteristics have been performed. Although geomorphological differences in each University Forest are somewhat recognized, numerical analyses of these features have not performed. With Digital Elevation Model (DEM), it is easy to calculate gradient and laplacian operations, which show geomorphological features. Gradient operations by 1km-grid pick up large-scale geomorphological features of slope and 50m-grid laplacian operations show unevenness of land surface. This study uses the combination of the two indices as parameters that calculate every 1km grid to show the geomorphological differences. The typical value ranges in each University Forest are <15° of 1km-gradient and <0.4 of 50m-laplacian, >15° of 1km-gradient and >0.4 of 50m-laplacian, <10° of 1km-gradient and >0.5 of 50m-laplacian, and <15° of 1km-gradient and >0.4 of 50m-laplacian in Hokkaido, Chichibu, Chiba, and Aichi respectively. This classification indicates that the four University Forests have typical geomorphological characteristics. The tendencies are gentle slope and evenness surface in Hokkaido, steep slope and unevenness surface in Chichibu, flat slope in large scale and short and steep surface in small scale in Chiba and, flat slope in large scale and short steep surface in small scale in Aichi.","subitem_description_type":"Abstract"}]},"item_4_full_name_3":{"attribute_name":"著者別名","attribute_value_mlt":[{"nameIdentifiers":[{"nameIdentifier":"54229","nameIdentifierScheme":"WEKO"}],"names":[{"name":"SATO, Atsushi"}]},{"nameIdentifiers":[{"nameIdentifier":"54230","nameIdentifierScheme":"WEKO"}],"names":[{"name":"SUZUKI, Masakazu"}]}]},"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":"東京大学大学院農学生命科学研究科農学国際専攻"},{"subitem_text_value":"東京大学大学院農学生命科学研究科森林科学専攻"},{"subitem_text_value":"Department of Global Agricultural Science, Graduate School of Agricultural and Life Sciences, The University of Tokyo"},{"subitem_text_value":"Department of Forest Science, 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":"佐藤, 淳"}],"nameIdentifiers":[{"nameIdentifier":"54227","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"鈴木, 雅一"}],"nameIdentifiers":[{"nameIdentifier":"54228","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":"esrh106005.pdf","filesize":[{"value":"1.1 MB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"esrh106005.pdf","url":"https://repository.dl.itc.u-tokyo.ac.jp/record/25351/files/esrh106005.pdf"},"version_id":"a8af3b42-8540-4d75-a337-d360496aff71"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"DEM","subitem_subject_scheme":"Other"},{"subitem_subject":"1km間隔傾斜","subitem_subject_scheme":"Other"},{"subitem_subject":"50m間隔ラプラシアン","subitem_subject_scheme":"Other"},{"subitem_subject":"DEM","subitem_subject_scheme":"Other"},{"subitem_subject":"1km-Gradient","subitem_subject_scheme":"Other"},{"subitem_subject":"50m-Laplacian","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":"東京大学北海道・秩父・千葉・愛知演習林における地形特性の50ｍメッシュ数値標高モデルを用いた定量的比較","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"東京大学北海道・秩父・千葉・愛知演習林における地形特性の50ｍメッシュ数値標高モデルを用いた定量的比較"}]},"item_type_id":"4","owner":"1","path":["2530","2529"],"pubdate":{"attribute_name":"公開日","attribute_value":"2012-07-17"},"publish_date":"2012-07-17","publish_status":"0","recid":"25351","relation_version_is_last":true,"title":["東京大学北海道・秩父・千葉・愛知演習林における地形特性の50ｍメッシュ数値標高モデルを用いた定量的比較"],"weko_creator_id":"1","weko_shared_id":null},"updated":"2022-12-19T04:03:39.713470+00:00"}