{"created":"2021-03-01T06:43:26.750640+00:00","id":25482,"links":{},"metadata":{"_buckets":{"deposit":"d241bd2c-0c67-479a-b895-e14bf7f630c8"},"_deposit":{"id":"25482","owners":[],"pid":{"revision_id":0,"type":"depid","value":"25482"},"status":"published"},"_oai":{"id":"oai:repository.dl.itc.u-tokyo.ac.jp:00025482","sets":["27:2466:2467:2565","9:504:2469:2566"]},"item_4_alternative_title_1":{"attribute_name":"その他のタイトル","attribute_value_mlt":[{"subitem_alternative_title":"Phenology of Tree Species by Measuring Litter Fall : I. Patterns of Leaf Fall of Evergreen Oak (Quercus acuta) in Two Stands of the University Forest in Chiba, University of Tokyo"}]},"item_4_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"1992","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"148","bibliographicPageStart":"135","bibliographicVolumeNumber":"88","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":"1．千葉県南部のアカガシが優占するおよそ75年生の常緑広葉樹林のA，Bの2調査区で，5年間にわたりリター落下量を測定し，主にアカガシの落葉量の季節変化，経年変化に注目してとりまとめた。2．1年間のうちで落葉量が最大に達する月は，新葉の展開時の4，5月であった。次に多い月は11月で，1972年，1973年，1975年には暴風雨がこの地方を襲った。また異常乾燥が観測された1975年9月にも多かった。3．A区における年間落葉量は，西暦奇数年の1971年，1973年と1975年に多く，西暦偶数年の1972年と1974年には少なく，2年周期の増減がみられ，最大値と最小値の比は3.6と大きい。B区における年間落葉量の最大値と最小値の比は1.6と小さく，年間落葉量の増減の周期は見られなかった。4．種子落下量は，A区では1972年と1974年に多く，それ以外の年は少ないが，B区では極めて少ない1971年を除くと変動幅は小さい。5．この調査地のアカガシの多くは，「奇数年タイプ」と「偶数年タイプ」の2タイプに分類された。前者は西暦奇数年に開葉開花し，同時に旧葉の80％以上を落し，翌年は旧葉の落葉と開葉は20％以下であるが，一部に結実を伴う。後者は前者の周期を1年ずらしたものである。両タイプの構成比の違い（A区は4：1，B区で1：1）が，両区のリター落下量の経年変化を大きく異なったものとしたと推測される。","subitem_description_type":"Abstract"},{"subitem_description":"1. For five years, we measured the monthly amount of litter fall at two plots A and B, in the evergreen broad-leaved forest dominated by Quercus acuta aged about 75. We investigated the seasonal and annual distributions of litter fall rate, paying attention to Quercus acuta. 2. The peak of monthly leaf fall was in April or May, when a flush of new leaves and shoots appeared. A secondary peak was in November when this area was attacked by storms and heavy rains. Many leaves fell in September 1975, when this area had no precipitaion for a continuous 25 days and was extremely dry. 3. The annual leaf fall rate of plot A was 192 (1971), 98 (1972), 348 (1973), 162 (1974) and 235g/m2/yr (1975). It changed sharply every other year and was high in the odd number years. However, that of plot B was nearly constant; 265 (1971), 273 (1972), 294 (1973), 348 (1974) and 223g/m2/yr (1975), The ratio of the maximum rate to the minimum rate of plot A is 3.6, and that of plot B is 1.6. 4. The annual seed fall rate of plot A was 0 (1971), 38 (1972), 3 (1973), 8 (1974) and 0g/m2/yr (1975), respectively, and high in the even number years. However, that of plot B was 1 (1971), 19 (1972), 5 (1973), 7 (1974) and 11g/m2/yr (1975), respectively, and annual fluctuation was not so high compared with that of plot A. 5. Based on the annual change of leaf fall rate, we classified each Quercus acuta tree as follows. One type we named the 'odd number year type tree'which puts forth new leaves and blooms mainly in odd number years. The other type we named the 'even number year type tree'which does so mainly in even number years. The ratio of the dominancy of the odd number year type tree to that of the even number type tree is 4:1 at plot A and 1:1 at plot B. We believe that the ratio caused the different rates of annual leaf fall.","subitem_description_type":"Abstract"}]},"item_4_full_name_3":{"attribute_name":"著者別名","attribute_value_mlt":[{"nameIdentifiers":[{"nameIdentifier":"54971","nameIdentifierScheme":"WEKO"}],"names":[{"name":"KABAYA, Hajime"}]},{"nameIdentifiers":[{"nameIdentifier":"54972","nameIdentifierScheme":"WEKO"}],"names":[{"name":"SUZUKI, Sadao"}]}]},"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":"東京大学農学部附属演習林研究部"},{"subitem_text_value":"東京大学農学部附属千葉演習林"},{"subitem_text_value":"Research Division of the University Forests, Faculty of Agriculture, The University of Tokyo"},{"subitem_text_value":"The 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":"蒲谷, 肇"}],"nameIdentifiers":[{"nameIdentifier":"54969","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"鈴木, 貞夫"}],"nameIdentifiers":[{"nameIdentifier":"54970","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":"esrh088008.pdf","filesize":[{"value":"1.1 MB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"esrh088008.pdf","url":"https://repository.dl.itc.u-tokyo.ac.jp/record/25482/files/esrh088008.pdf"},"version_id":"e1ecc1f6-3c91-4bae-ae7c-4aad39a7af18"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"アカガシ","subitem_subject_scheme":"Other"},{"subitem_subject":"落葉の季節変化","subitem_subject_scheme":"Other"},{"subitem_subject":"落葉の経年変化","subitem_subject_scheme":"Other"},{"subitem_subject":"結実","subitem_subject_scheme":"Other"},{"subitem_subject":"千葉演習林","subitem_subject_scheme":"Other"},{"subitem_subject":"Quercus acuta","subitem_subject_scheme":"Other"},{"subitem_subject":"Seasonal change of leaf fall","subitem_subject_scheme":"Other"},{"subitem_subject":"Annual change of leaf fall","subitem_subject_scheme":"Other"},{"subitem_subject":"Fruit bearing","subitem_subject_scheme":"Other"},{"subitem_subject":"The University Forest in Chiba","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":"リター落下量からみた樹木のフェノロジー1 : 東京大学千葉演習林荒樫沢におけるアカガシの落葉パターン","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"リター落下量からみた樹木のフェノロジー1 : 東京大学千葉演習林荒樫沢におけるアカガシの落葉パターン"}]},"item_type_id":"4","owner":"1","path":["2566","2565"],"pubdate":{"attribute_name":"公開日","attribute_value":"2014-09-03"},"publish_date":"2014-09-03","publish_status":"0","recid":"25482","relation_version_is_last":true,"title":["リター落下量からみた樹木のフェノロジー1 : 東京大学千葉演習林荒樫沢におけるアカガシの落葉パターン"],"weko_creator_id":"1","weko_shared_id":null},"updated":"2022-12-19T03:52:47.074443+00:00"}