{"created":"2022-01-27T02:38:44.181999+00:00","id":2002785,"links":{},"metadata":{"_buckets":{"deposit":"bbf8c302-ebba-477b-bad1-43ad53012980"},"_deposit":{"id":"2002785","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"2002785"},"status":"published"},"_oai":{"id":"oai:u-ryukyu.repo.nii.ac.jp:02002785","sets":["1642837622505:1642837905044:1642837919297","1642838403551:1642838407312"]},"author_link":[],"item_1617186331708":{"attribute_name":"Title","attribute_value_mlt":[{"subitem_1551255647225":"複層林に関する研究 : 1. 上層の林分構造と下層木の成長について(演習林)","subitem_1551255648112":"ja"},{"subitem_1551255647225":"A Study on Multiple Storied Forests : 1. Stand structure of an upper storey and growth of lower-storey trees (Forestry Experiment Station)","subitem_1551255648112":"en"}]},"item_1617186419668":{"attribute_name":"Creator","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"平田, 永二","creatorNameLang":"ja"}]},{"creatorNames":[{"creatorName":"山盛, 直","creatorNameLang":"ja"}]},{"creatorNames":[{"creatorName":"安里, 練雄","creatorNameLang":"ja"}]},{"creatorNames":[{"creatorName":"新里, 孝和","creatorNameLang":"ja"}]},{"creatorNames":[{"creatorName":"仲地, 本吉","creatorNameLang":"ja"}]},{"creatorNames":[{"creatorName":"Hirata, Eiji","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"Yamamori, Naoshi","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"Asato, Isao","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"Shinzato, Takakazu","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"Nakachi, Motoyoshi","creatorNameLang":"en"}]}]},"item_1617186476635":{"attribute_name":"Access Rights","attribute_value_mlt":[{"subitem_1522299639480":"open access","subitem_1600958577026":"http://purl.org/coar/access_right/c_abf2"}]},"item_1617186609386":{"attribute_name":"Subject","attribute_value_mlt":[{"subitem_1522299896455":"ja","subitem_1522300014469":"Other","subitem_1523261968819":"複層林"},{"subitem_1522299896455":"ja","subitem_1522300014469":"Other","subitem_1523261968819":"林分構造"},{"subitem_1522299896455":"ja","subitem_1522300014469":"Other","subitem_1523261968819":"下層木の成長"},{"subitem_1522299896455":"en","subitem_1522300014469":"Other","subitem_1523261968819":"multiple storied forest"},{"subitem_1522299896455":"en","subitem_1522300014469":"Other","subitem_1523261968819":"structure of upper-storey"},{"subitem_1522299896455":"en","subitem_1522300014469":"Other","subitem_1523261968819":"growth of under-storey trees"}]},"item_1617186626617":{"attribute_name":"Description","attribute_value_mlt":[{"subitem_description":"上層リュウキュウマツ・他広葉樹, 下層木イスノキ, イヌマキの複層林について実態調査を行い, 上層の林分構造及び下層木の成長の特性を明確にした。1) 上層木のha当たり立木本数は相対幹距約19%で管理されているが, これは, 沖縄県の複層林施業指針の基準に比べるとやや多い本数である。2) 広葉樹の混交割合は林分よって8∿89%の範囲を示し(平均46%), 若い林分ほどその割合は増加する傾向にある。また, 広葉樹の樹種構成をみると, 33種の樹種が出現するが, その内イタジイ, イジュ及びタブノキは目立っており, これら3樹種で全本数の57%を占めている。3) 広葉樹はリュウキュウマツよりも低い階層を形成し, リュウキュウマツのおよそ90%の高さで安定する。また, 相対樹高でみると, 広葉樹は40∿80%に集中的に分布し, 林内の光環境に大きく影響しているものと思われる。相対樹高を高い順に並べた順位曲線は, ゆるやかなS字曲線となり, 対称型及び非対称型のいずれの曲線式もよく適合している。4) 開空率は14∿58%の値をとり(平均30%), ha当たり立木本数及び相対幹距とかなり高い相関を示している。5) 下層木の樹高の平均成長量は, イスノキ6.9∿28.7cm, 平均20.1cm, イヌマキ10.3∿13.6cm, 平均11.6cmで, イスノキの方が優れている。植栽本数の減少率は平均してイスノキ22%, イヌマキ50%で, その主因は活着不良, 被圧, 下刈の際の切断, イノシシによる被害などであるが, イヌマキの場合は, これらに加えてキオビエダシャクの被害も無視できない。","subitem_description_type":"Other"},{"subitem_description":"The stand structure of an upper storey and the growth rate of lower-storey trees were investigated in the multiple storied forest with the mixed stand of Pinus luchuensis and broad leaved trees as the upper-storey trees and Distylium rasemosum and Fagus japonica as the lower-storey trees. 1) Number of trees per hectare is controlled on the condition of about 19% of a relative specing, which is slightly greater than the standard recommended as a guidline for working of multiple storied forests in Okinawa prefecture. 2) Mixture rates of broad leaved trees are found within a range of 8∿89% depending on a stand, with an increased rate for a younger stand. 3) Broad leaved trees form a lower storey, which is about 90% of the hight of Pinus luchuensis, and give a significanteffect on the light condition of an environment within the forest. 4) Crown desities are in a range of 14∿54% and shpws high correlations with number of trees per hectare and relative specing. 5) Mean annual increments of the height of a lower-storied forest are in a range of 6.9∿28.7cm with an average of 20.1cm for Distylium rasemosum and in a range of 10.3∿13.6cm with an average of 11.6cm for Fagus japonica, showing a superiority on Distylium rasemosum.","subitem_description_type":"Other"},{"subitem_description":"紀要論文","subitem_description_type":"Other"}]},"item_1617186643794":{"attribute_name":"Publisher","attribute_value_mlt":[{"subitem_1522300295150":"ja","subitem_1522300316516":"琉球大学農学部"}]},"item_1617186702042":{"attribute_name":"Language","attribute_value_mlt":[{"subitem_1551255818386":"jpn"}]},"item_1617186783814":{"attribute_name":"Identifier","attribute_value_mlt":[{"subitem_identifier_type":"HDL","subitem_identifier_uri":"http://hdl.handle.net/20.500.12000/3756"}]},"item_1617186920753":{"attribute_name":"Source Identifier","attribute_value_mlt":[{"subitem_1522646500366":"ISSN","subitem_1522646572813":"0370-4246"},{"subitem_1522646500366":"NCID","subitem_1522646572813":"AN00250548"}]},"item_1617186941041":{"attribute_name":"Source Title","attribute_value_mlt":[{"subitem_1522650068558":"ja","subitem_1522650091861":"琉球大学農学部学術報告"},{"subitem_1522650068558":"en","subitem_1522650091861":"The Science Bulletin of the Faculty of Agriculture. University of the Ryukyus"}]},"item_1617187056579":{"attribute_name":"Bibliographic Information","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"1995-12-01","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"42","bibliographicPageEnd":"155","bibliographicPageStart":"147"}]},"item_1617258105262":{"attribute_name":"Resource Type","attribute_value_mlt":[{"resourcetype":"departmental bulletin paper","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_1617265215918":{"attribute_name":"Version Type","attribute_value_mlt":[{"subitem_1522305645492":"VoR","subitem_1600292170262":"http://purl.org/coar/version/c_970fb48d4fbd8a85"}]},"item_1617605131499":{"attribute_name":"File","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_access","filename":"KJ00000161787.pdf","mimetype":"application/pdf","url":{"objectType":"fulltext","url":"https://u-ryukyu.repo.nii.ac.jp/record/2002785/files/KJ00000161787.pdf"},"version_id":"47ced6c5-4375-455d-9a69-ebbba2dc3088"}]},"item_title":"複層林に関する研究 : 1. 上層の林分構造と下層木の成長について(演習林)","item_type_id":"15","owner":"1","path":["1642837919297","1642838407312"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2008-02-14"},"publish_date":"2008-02-14","publish_status":"0","recid":"2002785","relation_version_is_last":true,"title":["複層林に関する研究 : 1. 上層の林分構造と下層木の成長について(演習林)"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2022-10-31T01:08:53.656381+00:00"}