{"created":"2021-03-01T06:43:21.109955+00:00","id":25396,"links":{},"metadata":{"_buckets":{"deposit":"2b29e081-09a7-407c-b4af-6ad6f04b1f63"},"_deposit":{"id":"25396","owners":[],"pid":{"revision_id":0,"type":"depid","value":"25396"},"status":"published"},"_oai":{"id":"oai:repository.dl.itc.u-tokyo.ac.jp:00025396","sets":["27:2466:2467:2543","9:504:2469:2544"]},"item_4_alternative_title_1":{"attribute_name":"その他のタイトル","attribute_value_mlt":[{"subitem_alternative_title":"Changes in Water Relations with Temperature Decrease in Cryptomeria japonica and Taiwania cryptomerioides"}]},"item_4_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"1998","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"123","bibliographicPageStart":"111","bibliographicVolumeNumber":"99","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":"温度環境の異なる天然分布域をもつスギ（Cryptomeria japonica D.Don）とタイワンスギ（Taiwania cryptomerioides Hayata）について，季節的な温度変化にともなう水分特性の変化を調べた。東京大学千葉演習林内の同一箇所に植栽されたスギ2本（樹高16.4m，13.0m）とタイワンスギ2本（16.0m，14.0m）を供試木とした。1996年7月から1997年の3月にかけて定期的に，樹液流速度および地上高約10mの陽樹冠の当年生葉についての日中の蒸散速度と水ポテンシャルの測定と，P－V曲線の作成を行った。樹液流速度と葉の水ポテンシャルから求めた樹木の通水抵抗は夏から冬にかけて増大し，タイワンスギよりもスギの方がその傾向が顕著だった。葉が十分に吸水したときの浸透ポテンシャルおよび膨圧を失うときの水ポテンシャルは，スギでは気温の低下にともない低下するのに対して，タイワンスギでは，週平均気温が16℃以上の時季では気温の低下にともない低下したが，16℃より低い時季にはそのような傾向はみられなかった。細胞の体積弾性率については，スギでは夏から冬にかけて上昇したが，タイワンスギでは10月以降上昇しなかった。以上のような葉の水分特性はタイワンスギよりもスギの方が耐凍性が高いことを示唆している。","subitem_description_type":"Abstract"},{"subitem_description":"Seasonal changes in water relations of Cryptomeria japonica D. Don and Taiwania cryptomerioides Hayata, whose natural distribution areas differed, were investigated. The study was conducted on two C. japonica (16.4m, 13.0m) and two T. cryptomerioides (16.0m, 14.0m) planted in the Tokyo University Forest in Chiba. The transpiration rate and water potential of current-year leaves at midday, sap flow velocity and pressure-volume curves of leaves were periodically measured from July 1996 to March 1997. The hydraulic resistance of both species in winter was higher than that in summer. Increase in hydraulic resistance in winter was more apparent in C. japonica than in T. cryptomerioides. Osmotic potential at saturation and water potential at the tugor loss point of C. japonica decreased as air temperature decreased. Though the osmotic potential and water potential of T. cryptomerioides decreased as air temperature decreased up to 16℃, they did not decrease as air temperature decreased below 16℃. Cell elasticity of leaves of C. japonica increased as air temperature decreased. T. cryptomerioides did not show an increase in cell elastisity of leaves after November. These water relations obtained on both species indicated that C. japonica was more tolerant to low temperature than T. cryptomerioides.","subitem_description_type":"Abstract"}]},"item_4_full_name_3":{"attribute_name":"著者別名","attribute_value_mlt":[{"nameIdentifiers":[{"nameIdentifier":"54468","nameIdentifierScheme":"WEKO"}],"names":[{"name":"HARA, Masashi"}]},{"nameIdentifiers":[{"nameIdentifier":"54469","nameIdentifierScheme":"WEKO"}],"names":[{"name":"NORISADA, Mariko"}]},{"nameIdentifiers":[{"nameIdentifier":"54470","nameIdentifierScheme":"WEKO"}],"names":[{"name":"SUZUKI, Makoto"}]},{"nameIdentifiers":[{"nameIdentifier":"54471","nameIdentifierScheme":"WEKO"}],"names":[{"name":"TANGE, Takeshi"}]},{"nameIdentifiers":[{"nameIdentifier":"54472","nameIdentifierScheme":"WEKO"}],"names":[{"name":"YAGI, Hisayoshi"}]}]},"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森林科学専攻"},{"subitem_text_value":"東京大学農学部附属演習林千葉演習林"},{"subitem_text_value":"Department of Forest Science, Graduate School of Agricultural and Life Sciences, The University of Tokyo"},{"subitem_text_value":"University Forest in Chiba, Faculty of Agriculture, The University of Tokyo"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"波, 羅仁"}],"nameIdentifiers":[{"nameIdentifier":"54463","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"則定, 真利子"}],"nameIdentifiers":[{"nameIdentifier":"54464","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"鈴木, 誠"}],"nameIdentifiers":[{"nameIdentifier":"54465","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"丹下, 健"}],"nameIdentifiers":[{"nameIdentifier":"54466","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"八木, 久義"}],"nameIdentifiers":[{"nameIdentifier":"54467","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":"esrh099005.pdf","filesize":[{"value":"687.8 kB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"esrh099005.pdf","url":"https://repository.dl.itc.u-tokyo.ac.jp/record/25396/files/esrh099005.pdf"},"version_id":"567be2c0-5a98-45e2-ac0f-761a3e19ad69"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"浸透ポテンシャル","subitem_subject_scheme":"Other"},{"subitem_subject":"通水抵抗","subitem_subject_scheme":"Other"},{"subitem_subject":"低温","subitem_subject_scheme":"Other"},{"subitem_subject":"スギ","subitem_subject_scheme":"Other"},{"subitem_subject":"タイワンスギ","subitem_subject_scheme":"Other"},{"subitem_subject":"Osmotic potential","subitem_subject_scheme":"Other"},{"subitem_subject":"Hydraulic resistance","subitem_subject_scheme":"Other"},{"subitem_subject":"Low temperature","subitem_subject_scheme":"Other"},{"subitem_subject":"Cryptomeria japonica","subitem_subject_scheme":"Other"},{"subitem_subject":"Taiwania cryptomerioides","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":"スギとタイワンスギの低温にともなう水分生理的変化","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"スギとタイワンスギの低温にともなう水分生理的変化"}]},"item_type_id":"4","owner":"1","path":["2544","2543"],"pubdate":{"attribute_name":"公開日","attribute_value":"2014-09-03"},"publish_date":"2014-09-03","publish_status":"0","recid":"25396","relation_version_is_last":true,"title":["スギとタイワンスギの低温にともなう水分生理的変化"],"weko_creator_id":"1","weko_shared_id":null},"updated":"2022-12-19T04:03:40.002629+00:00"}