{"created":"2021-03-01T06:43:24.761632+00:00","id":25452,"links":{},"metadata":{"_buckets":{"deposit":"34c15287-eb1a-4bd3-9ba1-e18947901cc3"},"_deposit":{"id":"25452","owners":[],"pid":{"revision_id":0,"type":"depid","value":"25452"},"status":"published"},"_oai":{"id":"oai:repository.dl.itc.u-tokyo.ac.jp:00025452","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":"林冠閉鎖前のスギ幼齢林の葉現存量変化に対する密度の影響"}]},"item_4_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"1994","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"44","bibliographicPageStart":"37","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":"To clarify the density effect on increment of leaf biomass in young Cryptomeria japonica stand before canopy closing, we studied on the relationship between leaf biomass, stand density and stand growth. The study plot was a 8-year-old spacing experiment stand in Tokyo University Forest in Chiba. We used three blocks with density of 2500 trees/ha, two blocks with density of 3906 trees/ha and three blocks with density of 6944 trees/ha. The biomass of each block was estimated from the allometric relationship between diameter at breast height and each organ weight obtained from three sample trees. Leaf biomass was from 17 to 26 t/ha. Leaf biomass had good relationship to mean tree height and didn't differ apparently among the blocks with different densities. Leaf biomass ratio to aboveground biomass decreased with relative density, for example 45% on the block with relative density of 0.2 and 30% on the blocks with relative density of 0.5. Stem production efficiency tended to be large on the sample trees with high nitrogen content in leaves or stand in the blocks with high density. Accordingly trees in blocks with low density had high partitioning rate to other organs but stem, such as leaf and branch. These results suggested the density effect on the leaf development.","subitem_description_type":"Abstract"},{"subitem_description":"林冠閉鎖前の若いスギ人工林の葉現存量の増加過程に対する林分密度の影響を明らかにするために，林分密度，成長と葉現存量との関係を調べた。東京大学千葉演習林前沢（28林班C1-3小班，1984年4月植栽，調査時（1992年5月）現在8年生）にある密度試験地内に3段階の密度で設定された8試験区画（2500本/haが3区画，3906本/haが2区画，6944本/haが3区画）を対象とした。各試験区画の現存量は，3本の供試木で得られた胸高直径との相対成長関係から推定した。葉現存量は17～26t/haの範囲にあり，密度によらず平均樹高の大きい試験区画ほど多い傾向にあり，密度による葉現存量差は小さかった。地上部現存量に占める葉現存量の割合は，相対密度が0.2の試験区画では45％，0.5の試験区画では30％であり，相対立木密度が低いほど大きい傾向にあった。供試木の葉の幹生産能率は，葉中窒素濃度が高いほど，また密度が高いほど，高い傾向にあった。密度の低い試験区画の供試木で幹生産能率が低いことは，幹以外の器官，つまり葉や枝への同化物の配分率が高いことを示しており，葉現存量比率が高い結果と一致した。これらの結果から，葉現存量増加への密度効果が示唆された。","subitem_description_type":"Abstract"}]},"item_4_full_name_3":{"attribute_name":"著者別名","attribute_value_mlt":[{"nameIdentifiers":[{"nameIdentifier":"54803","nameIdentifierScheme":"WEKO"}],"names":[{"name":"丹下, 健"}]},{"nameIdentifiers":[{"nameIdentifier":"54804","nameIdentifierScheme":"WEKO"}],"names":[{"name":"小島, 克己"}]},{"nameIdentifiers":[{"nameIdentifier":"54805","nameIdentifierScheme":"WEKO"}],"names":[{"name":"八木, 久義"}]},{"nameIdentifiers":[{"nameIdentifier":"54806","nameIdentifierScheme":"WEKO"}],"names":[{"name":"鈴木, 誠"}]}]},"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":"Department of Forestry, Faculty of Agriculture, The University of Tokyo"},{"subitem_text_value":"The University Forest In Chiba, Faculty of Agriculture, The University of Tokyo"},{"subitem_text_value":"東京大学農学部林学科"},{"subitem_text_value":"東京大学農学部附属千葉演習林"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"TANGE, Takeshi"}],"nameIdentifiers":[{"nameIdentifier":"54799","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"KOJIMA, Katsumi"}],"nameIdentifiers":[{"nameIdentifier":"54800","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"YAGI, Hisayoshi"}],"nameIdentifiers":[{"nameIdentifier":"54801","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"SUZUKI, Makoto"}],"nameIdentifiers":[{"nameIdentifier":"54802","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":"esrh092004.pdf","filesize":[{"value":"497.0 kB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"esrh092004.pdf","url":"https://repository.dl.itc.u-tokyo.ac.jp/record/25452/files/esrh092004.pdf"},"version_id":"526c397b-f28b-49a3-8b98-a6beae3aabd0"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"Young Cryptomeria japonica stand","subitem_subject_scheme":"Other"},{"subitem_subject":"Leaf biomass","subitem_subject_scheme":"Other"},{"subitem_subject":"Density effect","subitem_subject_scheme":"Other"},{"subitem_subject":"Stem production efficiency","subitem_subject_scheme":"Other"},{"subitem_subject":"スギ幼齢林","subitem_subject_scheme":"Other"},{"subitem_subject":"葉現存量","subitem_subject_scheme":"Other"},{"subitem_subject":"密度効果","subitem_subject_scheme":"Other"},{"subitem_subject":"幹生産能率","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":"departmental bulletin paper","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"Influence of Stand Density on the Increment of Leaf Biomass in the Young Cryptomeria japonica Stand before Canopy Closing","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Influence of Stand Density on the Increment of Leaf Biomass in the Young Cryptomeria japonica Stand before Canopy Closing"}]},"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":"25452","relation_version_is_last":true,"title":["Influence of Stand Density on the Increment of Leaf Biomass in the Young Cryptomeria japonica Stand before Canopy Closing"],"weko_creator_id":"1","weko_shared_id":null},"updated":"2022-12-19T04:55:06.264222+00:00"}