{"created":"2022-01-27T08:13:00.505505+00:00","id":2004699,"links":{},"metadata":{"_buckets":{"deposit":"d1ad8b73-3efb-42c3-8f25-2d49f7bdf382"},"_deposit":{"id":"2004699","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"2004699"},"status":"published"},"_oai":{"id":"oai:u-ryukyu.repo.nii.ac.jp:02004699","sets":["1642838403123","1642838403551:1642838407312"]},"author_link":[],"item_1617186331708":{"attribute_name":"Title","attribute_value_mlt":[{"subitem_1551255647225":"南西諸島における荒廃原野の育林技術に関する基礎的研究","subitem_1551255648112":"ja"},{"subitem_1551255647225":"Studies on the silvicultural techniques of denuded forest land in south-west islands","subitem_1551255648112":"en"}]},"item_1617186419668":{"attribute_name":"Creator","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"安里, 練雄","creatorNameLang":"ja"}]},{"creatorNames":[{"creatorName":"平田, 永二","creatorNameLang":"ja"}]},{"creatorNames":[{"creatorName":"Asato, Isao","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"Hirata, Eiji","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":"荒廃原野"},{"subitem_1522299896455":"ja","subitem_1522300014469":"Other","subitem_1523261968819":"荒廃林地"},{"subitem_1522299896455":"ja","subitem_1522300014469":"Other","subitem_1523261968819":"風衝林地"},{"subitem_1522299896455":"ja","subitem_1522300014469":"Other","subitem_1523261968819":"育林技術"},{"subitem_1522299896455":"ja","subitem_1522300014469":"Other","subitem_1523261968819":"保育施業"},{"subitem_1522299896455":"en","subitem_1522300014469":"Other","subitem_1523261968819":"Denuded forest land"},{"subitem_1522299896455":"ja","subitem_1522300014469":"Other","subitem_1523261968819":"画像処理"},{"subitem_1522299896455":"ja","subitem_1522300014469":"Other","subitem_1523261968819":"森林施業"},{"subitem_1522299896455":"en","subitem_1522300014469":"Other","subitem_1523261968819":"Silvicultural technique"},{"subitem_1522299896455":"en","subitem_1522300014469":"Other","subitem_1523261968819":"Remote sensin"},{"subitem_1522299896455":"ja","subitem_1522300014469":"Other","subitem_1523261968819":"ギンネム生地"},{"subitem_1522299896455":"ja","subitem_1522300014469":"Other","subitem_1523261968819":"空中写真画像解析"},{"subitem_1522299896455":"en","subitem_1522300014469":"Other","subitem_1523261968819":"Forest operation plan"},{"subitem_1522299896455":"ja","subitem_1522300014469":"Other","subitem_1523261968819":"空中写真"},{"subitem_1522299896455":"en","subitem_1522300014469":"Other","subitem_1523261968819":"Aerial photograph"},{"subitem_1522299896455":"en","subitem_1522300014469":"Other","subitem_1523261968819":"Image plocessing"}]},"item_1617186626617":{"attribute_name":"Description","attribute_value_mlt":[{"subitem_description":"科研費番号: 06660195","subitem_description_type":"Other"},{"subitem_description":"平成6年度～8年度科学研究費補助金(基盤研究(C))研究成果報告書","subitem_description_type":"Other"},{"subitem_description":"研究概要：本研究は、平成6〜8年度にかけて、南西諸島の荒廃原野について、育林技術や森林施業計画の改善に必要な基本的課題の摘出を試みたものである。南西諸島の主な荒廃原野は、沖縄本島中・南部地域に多いギンネム、ススキ生地と小島に多い風衝林地である。ギンネム生地等の実態を調査して育林技術上の課題を空中写真やLANDSAT-TMデ-タの画像処理を試みて森林施業計画に必要な荒廃原野や林相の区分に関する課題を検討した。 (1)沖縄本島中南部地域のギンネム原野は、一般的に、樹高は低く、直径が小さい、本数が極めて多い異齢単純林である。ギンネム林内での他の樹種の生育は非常に困難である。ススキは草丈が4mを越えて巨大化し、他の植生を被圧する。 (2)LANDSAT-TMデ-タを用いて、小規模のギンネム原野のエリア区分を試みた。1ha未満の小区域を正確に区分することは困難である。クラスタリングで概略的に区分することはできるが、誤った区分も多い。 (3)ギンネム原野等の区分について、空中写真の判読と画像処理の適応性について検討した。実体鏡による判読の精度は、非常に良好である。しかし、写真をコンピュ-タに取り込んで画像処理した場合のクラスタリングや教師付き分類法による精度は低い。 (4)空中写真の画像処理によって、ギンネムなどの荒廃原野や山地での風衝林地、林相の区分を行う場合には、斜面方位や傾斜角度などの地理的要素を加えて検討する必要がある。 (5)LANDSAT-TMデ-タを利用して、約1,500haの島について、風衝林地や林相の区分を行った。分光反射特性に基づく植生指数と教師付き分類法により、実用的な成果を得た。","subitem_description_type":"Other"},{"subitem_description":"This study was done from 1994 to 1996 to develop the necessary silvicultural technique, forest operation plan and improvement ; and to find out about several fundamental factors of the denuded forests in the South-West islands. The major denuded forest of the South-West islands have small islands of wind-beaten forest lands. In the southern region of Okinawa Island, no these wind-beaten forest land, there are lots of growing areas of Leucaena leucocephala, and Miscanthus sinensis. On the growing areas of L.leucocephala etc., actual on-the-spot issues with respect of silvicultural techniques were surveyed. By using aerial photograph and image processing of LANDSAT-TM data, issues concerned with the denuded forest, forest type classification etc. necessary for forest operation planning were investigated. (1) In the L.leucocephala forest of the southern region of Okinawa Island, generally tree heights are short, diameter of trees very small, tree density very high and is an uneven-aged pure forest. In the L.leucocephala forest, the growth of other tree species is very difficult. Plant heights of M.sinensis are about 4m, growing very large and suppressing other plants. (2) In using LANDSAT-TM data, area classification of small area L.leucocephala forest was done. Accurate classification of small areas less than l ha was difficult. Using Clustering method approximate classification can be done, however erroneous classifications are high. (3) In the classification of L.leucocephala forest and other forest types, the applicability of photo-interpretation and image processing of aerial photograph were investigated. The accuracy of interpretation by the steroscope of aerial photograph is very excellent. However, accuracy with respect to Clustering and supervised classification methods is low. (4) Under the image processing of aerial photographs, in classifying the wind-beaten forest on hillsides, denuded forests of L.leucocephala etc., and other forest types, it is important to investigate factors of topographical features like direction bearing, gradient etc. (5). Using LANDSAT-TM data, area classification of the wind-beaten forest land on about 1,500 ha of the island was done. Based on vegetation index and supervised classification, a practical use of an excellent result can be done.","subitem_description_type":"Other"},{"subitem_description":"研究成果１　南西諸島における荒廃原野の育林技術に関する基礎的研究 : １LANDSAT-TMデータによるギンネム原野のエリア区分について（p.8-16）　http://ir.lib.u-ryukyu.ac.jp/handle/123456789/3728","subitem_description_type":"Other"},{"subitem_description":"研究成果２　南西諸島における荒廃原野の育林技術に関する基礎的研究 : ２空中写真の画像処理による林相区分についての基礎的検討（p.17-27）　http://ir.lib.u-ryukyu.ac.jp/handle/123456789/3738","subitem_description_type":"Other"},{"subitem_description":"p.28以降は抜き刷り論文のため未公開","subitem_description_type":"Other"},{"subitem_description":"研究報告書","subitem_description_type":"Other"}]},"item_1617186643794":{"attribute_name":"Publisher","attribute_value_mlt":[{"subitem_1522300295150":"ja","subitem_1522300316516":"安里練雄"}]},"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/20.500.12000/10967"}]},"item_1617186920753":{"attribute_name":"Source Identifier","attribute_value_mlt":[{"subitem_1522646500366":"NCID","subitem_1522646572813":"BA35561154"}]},"item_1617187056579":{"attribute_name":"Bibliographic Information","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"1997-03","bibliographicIssueDateType":"Issued"},"bibliographicPageStart":"none"}]},"item_1617258105262":{"attribute_name":"Resource Type","attribute_value_mlt":[{"resourcetype":"research report","resourceuri":"http://purl.org/coar/resource_type/c_18ws"}]},"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":"06660195pdf.pdf","mimetype":"application/pdf","url":{"objectType":"fulltext","url":"https://u-ryukyu.repo.nii.ac.jp/record/2004699/files/06660195pdf.pdf"},"version_id":"067cdbe8-b0da-4e8d-872b-587ccb20de09"}]},"item_title":"南西諸島における荒廃原野の育林技術に関する基礎的研究","item_type_id":"15","owner":"1","path":["1642838403123","1642838407312"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2009-06-18"},"publish_date":"2009-06-18","publish_status":"0","recid":"2004699","relation_version_is_last":true,"title":["南西諸島における荒廃原野の育林技術に関する基礎的研究"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2022-10-31T02:02:57.644662+00:00"}