Yukio Teraoka, Tsuyoshi Kajisa, Daisuke Higashi, Takashi Sonoda, Kiyomizu Maeda and Kunihiko Hata: Natural drying of standing Sugi trees by girdling treatment for fuel chip production. Jpn. J. For. Plann. 57: 37～44, 2024 Experiments to produce dried fuel chips by natural drying of standing Sugi (Cryptomeria japonica) trees using girdling treatment were performed. Ten trees were sampled from a 48-year-old stand for girdling that had been dried for 16 months, and five control trees without treatment were cut and chipped for each tree. The chip moisture contents (wet-based) were measured by the oven drying method and compared. Thus, nine girdling-treated trees had died from 3.5 to 13.5 months and could produce dried fuel chips with less than 42% moisture content. On the other hand, one girdling-treated tree had survived for 16 months, and the control trees showed high moisture content. Significant differences were observed between the moisture contents of died and survived trees by ANOVA. These results supported the feasibility of producing dried fuel chips from dead trees using girdling, which could be used for wood chip boilers.
"},{"@language":"ja","@value":"寺岡行雄・加治佐剛・東大介・園田高士・前田清水・畑邦彦：燃料チップ生産のための巻き枯らしによるスギ樹幹の天然乾燥，森林計画誌57：37～44，2024 巻き枯らし処理によりスギ立木の樹幹含水率を低下させ，乾燥チップ用ボイラーに利用できる含水率の燃料チップを生産することが可能か，実験的に明らかにした。鹿児島県垂水市のスギ48年生の10本で巻き枯らし処理を行い，16ヵ月間の乾燥試験を行った。巻き枯らし木の9本は開始後3.5ヵ月から13.5ヵ月で枝葉が褐色化し枯死したが，1本は16ヵ月後も枯死しなかった。試験終了後に，未処理木5本と同時に伐倒後，1本毎にチップ化し，スギチップの含水率（湿量基準）を全乾法により測定した。枯死した個体からのチップ含水率は42%以下であり，乾燥チップ用ボイラーでの燃料として利用可能であると判断された。枯死した巻き枯らし木と未処理木でのチップ含水率の差を分散分析したところ有意な差が認められた。以上より，間伐等実施の1年以上前に巻き枯らし処理を行い伐倒時点で枯死が確認できていれば，乾燥チップ用ボイラーで利用可能な含水率の燃料チップを安価に製造できると考えられた。
"}],"abstractLicenseFlag":"disallow"}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1410299771261033729","@type":"Researcher","foaf:name":[{"@language":"en","@value":"Teraoka Yukio"},{"@language":"ja","@value":"寺岡 行雄"}],"jpcoar:affiliationName":[{"@language":"ja","@value":"鹿児島大学農学部"}]},{"@id":"https://cir.nii.ac.jp/crid/1410299771261033730","@type":"Researcher","foaf:name":[{"@language":"en","@value":"Kajisa Tsuyoshi"},{"@language":"ja","@value":"加治佐 剛"}],"jpcoar:affiliationName":[{"@language":"ja","@value":"鹿児島大学農学部"}]},{"@id":"https://cir.nii.ac.jp/crid/1410299771261033733","@type":"Researcher","foaf:name":[{"@language":"en","@value":"Higashi Daisuke"},{"@language":"ja","@value":"東 大介"}],"jpcoar:affiliationName":[{"@language":"ja","@value":"鹿児島大学農学部"}]},{"@id":"https://cir.nii.ac.jp/crid/1410299771261033731","@type":"Researcher","foaf:name":[{"@language":"en","@value":"Sonoda Takashi"},{"@language":"ja","@value":"園田 高士"}],"jpcoar:affiliationName":[{"@language":"ja","@value":"鹿児島大学農学部"}]},{"@id":"https://cir.nii.ac.jp/crid/1410299771261033728","@type":"Researcher","foaf:name":[{"@language":"en","@value":"Maeda Kiyomizu"},{"@language":"ja","@value":"前田 清水"}],"jpcoar:affiliationName":[{"@language":"ja","@value":"鹿児島大学農学部"}]},{"@id":"https://cir.nii.ac.jp/crid/1410299771261033732","@type":"Researcher","foaf:name":[{"@language":"en","@value":"Hata Kunihiko"},{"@language":"ja","@value":"畑 邦彦"}],"jpcoar:affiliationName":[{"@language":"ja","@value":"鹿児島大学農学部"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"09172017"},{"@type":"EISSN","@value":"21898308"},{"@type":"ISSN","@value":"09172017"},{"@type":"NDL_BIB_ID","@value":"000000079585"},{"@type":"LISSN","@value":"09172017"},{"@type":"NCID","@value":"AN10385361"}],"prism:publicationName":[{"@language":"ja","@value":"森林計画学会誌"},{"@language":"en","@value":"Japanese Journal of Forest Planning"},{"@language":"ja","@value":"森林計画誌"},{"@language":"en","@value":"JFP"}],"dc:publisher":[{"@language":"en","@value":"Japan Society of Forest Planning"},{"@language":"ja","@value":"森林計画学会"}],"prism:publicationDate":"2024-03-29","prism:volume":"57","prism:number":"2","prism:startingPage":"37","prism:endingPage":"44"},"reviewed":"false","dcterms:accessRights":"http://purl.org/coar/access_right/c_abf2","url":[{"@id":"https://ir.kagoshima-u.ac.jp/records/2001572"},{"@id":"https://agriknowledge.affrc.go.jp/RN/2030951287"},{"@id":"http://id.ndl.go.jp/bib/033479333"},{"@id":"https://ndlsearch.ndl.go.jp/books/R000000004-I033479333"},{"@id":"https://www.jstage.jst.go.jp/article/jjfp/57/2/57_37/_pdf"}],"availableAt":"2024-03-29","foaf:topic":[{"@id":"https://cir.nii.ac.jp/all?q=Girdling%20treatment","dc:title":"Girdling treatment"},{"@id":"https://cir.nii.ac.jp/all?q=Natural%20drying","dc:title":"Natural drying"},{"@id":"https://cir.nii.ac.jp/all?q=Fuel%20chips","dc:title":"Fuel chips"},{"@id":"https://cir.nii.ac.jp/all?q=Moisture%20content","dc:title":"Moisture content"},{"@id":"https://cir.nii.ac.jp/all?q=%E5%B7%BB%E3%81%8D%E6%9E%AF%E3%82%89%E3%81%97","dc:title":"巻き枯らし"},{"@id":"https://cir.nii.ac.jp/all?q=%E5%A4%A9%E7%84%B6%E4%B9%BE%E7%87%A5","dc:title":"天然乾燥"},{"@id":"https://cir.nii.ac.jp/all?q=%E3%83%81%E3%83%83%E3%83%97%E7%87%83%E6%96%99","dc:title":"チップ燃料"},{"@id":"https://cir.nii.ac.jp/all?q=%E5%90%AB%E6%B0%B4%E7%8E%87","dc:title":"含水率"}],"dcterms:subject":[{"subjectScheme":"Other","notation":[{"@language":"ja","@value":"巻き枯らし"}]},{"subjectScheme":"Other","notation":[{"@language":"ja","@value":"天然乾燥"}]},{"subjectScheme":"Other","notation":[{"@language":"ja","@value":"チップ燃料"}]},{"subjectScheme":"Other","notation":[{"@language":"ja","@value":"含水率"}]},{"subjectScheme":"Other","notation":[{"@language":"en","@value":"Girdling treatment"}]},{"subjectScheme":"Other","notation":[{"@language":"en","@value":"Natural 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