{"created":"2023-06-19T07:30:46.126957+00:00","id":794,"links":{},"metadata":{"_buckets":{"deposit":"2ea96f2a-69d8-4c51-b5d4-d54933e9760f"},"_deposit":{"created_by":3,"id":"794","owners":[3],"pid":{"revision_id":0,"type":"depid","value":"794"},"status":"published"},"_oai":{"id":"oai:nodai.repo.nii.ac.jp:00000794","sets":["47:48:181:185"]},"author_link":["4146","4151","4154","4153","4149","4152","4150","4148","4145","4147","4156","4155"],"item_1_biblio_info_12":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2019-12-20","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"3","bibliographicPageEnd":"82","bibliographicPageStart":"75","bibliographicVolumeNumber":"64","bibliographic_titles":[{}]}]},"item_1_description_10":{"attribute_name":"抄録(日)","attribute_value_mlt":[{"subitem_description":"北海道の天然林におけるエゾマツ資源の減少を背景として，人工造林によるエゾマツ資源の回復が期待されている。エゾマツ造林の成功率向上に資するため，北海道東部の阿寒湖周辺の2～18年生のエゾマツ若齢造林地約30か所において，造林木の生育状況と立地環境を調査し，造林木の生存と樹高成長に及ぼす各種の立地環境要因の影響を解析した。造林木の生存率は，2齢級の造林地で40%を下回る調査地がいくつか見られたものの全体的には比較的高く，生存率50%以上の調査地が全調査地数の87%を占めた。樹高成長に関しては，林齢18年生までで平均樹高が3mを超える調査地はなく，既往の報告と比べると全般的に小さかった。エゾマツ造林木の生存と成長に及ぼす立地環境要因の影響を一般化線形モデル（GLM）によって解析した結果，造林木の生存率には，標高，斜面傾斜，斜面方位，散乱光透過率（DSF），上木の針葉樹比率，およびDSFと上木の針葉樹比率の交互作用が影響を及ぼしていることが示唆された。一方，造林木の平均樹高には，林齢，DSF, 上木の針葉樹比率が影響を及ぼしていることが示唆された。GLMによる解析結果を用いて造林木の生存率を散乱光透過率DSFとの関係で予測したところ，生存率はDSFが小さいほど低くなり，とくにDSFが約35%より小さい領域では生存率に及ぼす針葉樹比率の影響が強く現れ，針葉樹比率が高いほどDSFの低下にともなう生存率の低下が顕著になると予測された。同様に，造林木の平均樹高をDSFとの関係で予測したところ，平均樹高はDSFが大きいほど高く，上木の針葉樹比率が低いほど高くなった。これらの結果から，DSFが約35%を下回るような暗い天然林内でとくに上木の針葉樹比率が高い場所にエゾマツを樹下植栽する場合には，DSF35％以上を確保するために少なくとも900m2程度のギャップを作出するような更新伐が必要と考えられた。","subitem_description_type":"Other"}]},"item_1_description_11":{"attribute_name":"抄録(英)","attribute_value_mlt":[{"subitem_description":"Timber resources of Ezo spruce, Picea jezoensis (Siebold et Zucc.) Carrière, a coniferous tree species representative of natural forests in Hokkaido, northern Japan, have declined due to intensive logging activities and the difficulty of natural regeneration in this species.  To obtain technical information for the improvement of artificial Ezo spruce regeneration, we investigated the growth and survival of planted young trees in approximately 30 stands in the forest surrounding Lake Akan, eastern Hokkaido, Japan.  Most of the investigated trees were grown beneath the canopy of a natural mixed forest comprising evergreen conifers and deciduous broadleaf trees, except for a few open sites.  The ages of the planted trees, which we defined as the number of years after plantation, ranged from 2 to 18 years.  We also measured various environmental factors such as relative light intensity (diffuse site factor, DSF) and the proportion of evergreen conifers to the total basal area of the surrounding canopy trees.  Survival rates were relatively high among the planted trees, at ≥50% in 87% of all stands.  However, in several stands, survival rates were ＜40% in the 6-10 years age class.  Height increases were smaller than those reported in previous studies ; the average height of planted trees did not exceed 3 m in any stands aged ＜18 years.  Generalized linear model (GLM) analysis showed that tree survival was affected by altitude, slope inclination, slope aspect, DSF, the proportion of conifers in the canopy layer, and the interaction between DSF and the proportion of conifers in the canopy layer.  This analysis also showed that average height was influenced by age, DSF, and the proportion of conifers in the canopy layer.  We applied these results to predict survival rates and average heights of trees as a function of DSF and the proportion of conifers in the canopy layer.  The predicted survival rates decreased as DSF decreased, and the proportion of conifers in the canopy layer enhanced the decline in survival rates at DSF values ＜ca. 35%.  The GLM prediction also showed that average height would be higher in stands with higher DSF values and lower proportions of conifers in the canopy layer.  Based on these results and the relationship between DSF and gap size, we conclude that a canopy gap of at least 900 m2 may be desirable when Ezo spruce trees are planted beneath the canopy, especially in mixed stands where the proportion of evergreen conifers in the canopy layer is high and DSF is ＜ca. 35%.","subitem_description_type":"Other"}]},"item_1_description_13":{"attribute_name":"レポート・講演番号","attribute_value_mlt":[{"subitem_description":"E","subitem_description_type":"Other"}]},"item_1_description_15":{"attribute_name":"表示順","attribute_value_mlt":[{"subitem_description":"1","subitem_description_type":"Other"}]},"item_1_description_2":{"attribute_name":"ページ属性","attribute_value_mlt":[{"subitem_description":"P","subitem_description_type":"Other"}]},"item_1_description_8":{"attribute_name":"記事種別(日)","attribute_value_mlt":[{"subitem_description":"論文","subitem_description_type":"Other"}]},"item_1_description_9":{"attribute_name":"記事種別(英)","attribute_value_mlt":[{"subitem_description":"Article","subitem_description_type":"Other"}]},"item_1_source_id_1":{"attribute_name":"雑誌書誌ID","attribute_value_mlt":[{"subitem_source_identifier":"AN00164184","subitem_source_identifier_type":"NCID"}]},"item_1_text_6":{"attribute_name":"著者所属(日)","attribute_value_mlt":[{"subitem_text_value":"東京農業大学生物産業学部生物生産学科"},{"subitem_text_value":"東京農業大学生物産業学部生物生産学科"},{"subitem_text_value":"東京農業大学生物産業学部生物生産学科"},{"subitem_text_value":"一般財団法人前田一歩園財団"},{"subitem_text_value":"一般財団法人前田一歩園財団"},{"subitem_text_value":"東京農業大学生物産業学部生物生産学科"}]},"item_1_text_7":{"attribute_name":"著者所属(英)","attribute_value_mlt":[{"subitem_text_language":"en","subitem_text_value":"Department of Bioproduction, Faculty of Bioindustry, Tokyo University of Agriculture"},{"subitem_text_language":"en","subitem_text_value":"Department of Bioproduction, Faculty of Bioindustry, Tokyo University of Agriculture"},{"subitem_text_language":"en","subitem_text_value":"Department of Bioproduction, Faculty of Bioindustry, Tokyo University of Agriculture"},{"subitem_text_language":"en","subitem_text_value":"Maeda Ippoen Foundation"},{"subitem_text_language":"en","subitem_text_value":"Maeda Ippoen Foundation"},{"subitem_text_language":"en","subitem_text_value":"Department of Bioproduction, Faculty of Bioindustry, Tokyo University of Agriculture"}]},"item_1_title_3":{"attribute_name":"論文名よみ","attribute_value_mlt":[{"subitem_title":"ホッカイドウ　トウブ・アカンコ　シュウヘン　ニ　オケル　エゾマツ　ジャクレイ　ゾウリンボク　ノ　セイイク　ト　カンキョウ"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"高橋, 朋佳"},{"creatorName":"タカハシ, トモカ","creatorNameLang":"ja-Kana"}],"nameIdentifiers":[{"nameIdentifier":"4145","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"大和, 瑠理"},{"creatorName":"ヤマト, ルリ","creatorNameLang":"ja-Kana"}],"nameIdentifiers":[{"nameIdentifier":"4146","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"佐藤, 駿"},{"creatorName":"サトウ, シュン","creatorNameLang":"ja-Kana"}],"nameIdentifiers":[{"nameIdentifier":"4147","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"酒井, 賢一"},{"creatorName":"サカイ, ケンイチ","creatorNameLang":"ja-Kana"}],"nameIdentifiers":[{"nameIdentifier":"4148","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"時田, 勝広"},{"creatorName":"トキタ, カツヒロ","creatorNameLang":"ja-Kana"}],"nameIdentifiers":[{"nameIdentifier":"4149","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"寺澤, 和彦"},{"creatorName":"テラザワ, カズヒコ","creatorNameLang":"ja-Kana"}],"nameIdentifiers":[{"nameIdentifier":"4150","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Takahashi, Tomoka","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"4151","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Yamato, Ruri","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"4152","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Sato, Shun","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"4153","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Sakai, Ken-ichi","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"4154","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Tokita, Katsuhiro","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"4155","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Terazawa, Kazuhiko","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"4156","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":"2020-01-10"}],"displaytype":"detail","filename":"64_75.pdf","filesize":[{"value":"904.2 kB"}],"format":"application/pdf","licensetype":"license_11","mimetype":"application/pdf","url":{"label":"64_75","url":"https://nodai.repo.nii.ac.jp/record/794/files/64_75.pdf"},"version_id":"7fcf4502-69fd-4e6e-b28a-4d5879606cd6"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"エゾマツ","subitem_subject_scheme":"Other"},{"subitem_subject":"造林","subitem_subject_scheme":"Other"},{"subitem_subject":"生存率","subitem_subject_scheme":"Other"},{"subitem_subject":"樹高成長","subitem_subject_scheme":"Other"},{"subitem_subject":"散乱光透過率","subitem_subject_scheme":"Other"},{"subitem_subject":"Picea jezoensis","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"afforestation","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"survival","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"height growth, diffuse site factor","subitem_subject_language":"en","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":"北海道東部・阿寒湖周辺におけるエゾマツ若齢造林木の生育と環境","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"北海道東部・阿寒湖周辺におけるエゾマツ若齢造林木の生育と環境"},{"subitem_title":"Survival and Growth of Planted Young Picea jezoensis Trees in Response to Various Environmental Factors near Lake Akan, Eastern Hokkaido, Japan","subitem_title_language":"en"}]},"item_type_id":"1","owner":"3","path":["185"],"pubdate":{"attribute_name":"公開日","attribute_value":"2020-01-10"},"publish_date":"2020-01-10","publish_status":"0","recid":"794","relation_version_is_last":true,"title":["北海道東部・阿寒湖周辺におけるエゾマツ若齢造林木の生育と環境"],"weko_creator_id":"3","weko_shared_id":3},"updated":"2023-06-19T07:43:52.546555+00:00"}