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Japanese Journal of Forest Planning最新文献

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Validation of tree height measurement with UAV-SfM technique combining ALS data using ICP algorithm 基于ICP算法的无人机- sfm技术结合ALS数据的树高测量验证
Japanese Journal of Forest Planning Pub Date : 2020-03-20 DOI: 10.20659/jjfp.55.2_95
Tatsuki Yoshii, N. Matsumura
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引用次数: 0
Identification of tree species using a machine learning algorithm based on leaf shape and venation pattern 利用基于叶片形状和脉状模式的机器学习算法识别树种
Japanese Journal of Forest Planning Pub Date : 2019-11-25 DOI: 10.20659/jjfp.53.1_1
Y. Minowa, Raki Takami, M. Suguri, Moeko Ashida, Yuhsuke Yoshimura
{"title":"Identification of tree species using a machine learning algorithm based on leaf shape and venation pattern","authors":"Y. Minowa, Raki Takami, M. Suguri, Moeko Ashida, Yuhsuke Yoshimura","doi":"10.20659/jjfp.53.1_1","DOIUrl":"https://doi.org/10.20659/jjfp.53.1_1","url":null,"abstract":"*連絡先(Corresponding author)E-mail : sharmy@uf.kpu.ac.jp 1 京都府立大学大学院生命環境科学研究科(606-8522 京都市左京区下鴨半木町1-5) Graduate School of Life and Environmental Sciences, Kyoto Prefectural University, 1-5 Shimogamo-hangi cho, Sakyo-ku, Kyoto 606-8522, Japan 2 京都府立大学生命環境学部(606-8522 京都市左京区下鴨半木町1-5) Faculty of Life and Environmental Sciences, Kyoto Prefectural University, 1-5 Shimogamo-hangi cho, Sakyo-ku, Kyoto 606-8522, Japan 3 京都大学大学院農学研究科(606-8502 京都市左京区北白川追分町) Graduate School of Agriculture, Kyoto University, Kitashirakawa-oiwake cho, Sakyo-ku, Kyoto 606-8502, Japan 4 京都大学大学農学部(606-8502 京都市左京区北白川追分町) Faculty of Agriculture, Kyoto University, Kitashirakawa-oiwake cho, Sakyo-ku, Kyoto 606-8502, Japan 美濃羽靖・高味楽生・村主勝彦・芦田萌子・吉村勇祐:葉の形状および葉脈情報を用いた機械学習による樹種 分類,森林計画誌53:1~14,2019 本研究は,葉から形状および葉脈情報を抽出し,機械学習を用いて樹種判 別を試みた。葉は京都大学構内に成立する樹木38種からそれぞれ10枚を採取した。形状情報には円形度,短径・ 長径比,周囲長・最適楕円軌道比を,葉脈情報にはHOG特徴量を用いた。また,葉の全体や部分についての フラクタル次元を算出した。機械学習には決定木(J48および RandomForest)およびニューラルネットワー ク(MultilayerPerceptorn)を用い,判別精度は正答率を用いた。汎化性(未知事例に対する判別精度)につ いては,交差検証法および検証用データ用いて検証した。未学習,過学習については,集団学習を用いて検証 した。その結果,訓練事例の判別精度は,フラクタル次元のみではどの学習モデルも正答率は低かったが,形 状情報を用いた場合は全体的に高い正答率が得られ,さらに,形状情報とフラクタル次元を同時に用いること により,判別精度は向上する傾向を示した。また,葉脈情報のみでも,全体的に高い正答率を示した。一方, 未知事例に対する判別精度は,形状情報およびフラクタル次元を同時に用いた場合では65.3%(J48)から 78.8%(RandomForest),葉脈情報のみを用いた場合では,12.5%(J48)から43.9%(MultilayerPerceptorn, 学習回数500回)となった。","PeriodicalId":234210,"journal":{"name":"Japanese Journal of Forest Planning","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131310908","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Back Matter (53-1) 背部物质(53-1)
Japanese Journal of Forest Planning Pub Date : 2019-11-25 DOI: 10.20659/jjfp.53.1_44
{"title":"Back Matter (53-1)","authors":"","doi":"10.20659/jjfp.53.1_44","DOIUrl":"https://doi.org/10.20659/jjfp.53.1_44","url":null,"abstract":"","PeriodicalId":234210,"journal":{"name":"Japanese Journal of Forest Planning","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129287421","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Front Matter (53-1) 正面问题(53-1)
Japanese Journal of Forest Planning Pub Date : 2019-11-25 DOI: 10.20659/jjfp.53.1_0
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引用次数: 0
Back Matter (52-2) 背部物质(52-2)
Japanese Journal of Forest Planning Pub Date : 2019-04-25 DOI: 10.20659/jjfp.52.2_96
{"title":"Back Matter (52-2)","authors":"","doi":"10.20659/jjfp.52.2_96","DOIUrl":"https://doi.org/10.20659/jjfp.52.2_96","url":null,"abstract":"","PeriodicalId":234210,"journal":{"name":"Japanese Journal of Forest Planning","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121491712","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Winter desiccation damage in evergreen conifer windbreaks on arable land: a case study in Kamioribe district, Shihoro town, eastern Hokkaido 常绿针叶树防风林在耕地上的冬季干旱化损害:以北海道东部石堀镇Kamioribe区为例
Japanese Journal of Forest Planning Pub Date : 2019-04-25 DOI: 10.20659/jjfp.52.2_75
M. Nakagawa
{"title":"Winter desiccation damage in evergreen conifer windbreaks on arable land: a case study in Kamioribe district, Shihoro town, eastern Hokkaido","authors":"M. Nakagawa","doi":"10.20659/jjfp.52.2_75","DOIUrl":"https://doi.org/10.20659/jjfp.52.2_75","url":null,"abstract":"","PeriodicalId":234210,"journal":{"name":"Japanese Journal of Forest Planning","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116129409","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Front Matter (52-2) 正面问题(52-2)
Japanese Journal of Forest Planning Pub Date : 2019-04-25 DOI: 10.20659/jjfp.52.2_0
{"title":"Front Matter (52-2)","authors":"","doi":"10.20659/jjfp.52.2_0","DOIUrl":"https://doi.org/10.20659/jjfp.52.2_0","url":null,"abstract":"","PeriodicalId":234210,"journal":{"name":"Japanese Journal of Forest Planning","volume":"111 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124250601","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Cost, productivity, and profitability of a thinned-log hauling system using smaller machines in a dense network of narrow forest roads 在密集的狭窄森林道路网络中使用小型机器的薄原木运输系统的成本、生产率和盈利能力
Japanese Journal of Forest Planning Pub Date : 2019-04-25 DOI: 10.20659/jjfp.52.2_67
K. Nagashima, I. Yoshinaga, Kazuhiro Tanaka
{"title":"Cost, productivity, and profitability of a thinned-log hauling system using smaller machines in a dense network of narrow forest roads","authors":"K. Nagashima, I. Yoshinaga, Kazuhiro Tanaka","doi":"10.20659/jjfp.52.2_67","DOIUrl":"https://doi.org/10.20659/jjfp.52.2_67","url":null,"abstract":"2019 This study examined the cost, labor productivity, and profitability of a thinned-log hauling system using smaller machines in a dense network of narrow forest roads at a private forest in Ayabe City, Kyoto Prefecture. By introducing this hauling system, road construction could be carried out at a low cost and higher productivity; in addition, cost of log production was expected to be low. Furthermore, the profitability could be secured with the current subsidy system; however, without subsidy, the thinned-log hauling operation would generate loss. Further research is required to clarify the limitations of this system and formulate strategies to improve profitability, such as providing good-quality logs through meticulous management, which could be accomplished by the dense network of forest roads.","PeriodicalId":234210,"journal":{"name":"Japanese Journal of Forest Planning","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122565780","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Relationship between distribution of large-diameter stems and topography in approximately 65-year-old secondary forest in the Yambaru area of Okinawa Island 冲绳岛山原地区约65年生长期次生林大直径茎的分布与地形的关系
Japanese Journal of Forest Planning Pub Date : 2019-04-25 DOI: 10.20659/jjfp.52.2_59
Atsushi Takashima, J. Oshima
{"title":"Relationship between distribution of large-diameter stems and topography in approximately 65-year-old secondary forest in the Yambaru area of Okinawa Island","authors":"Atsushi Takashima, J. Oshima","doi":"10.20659/jjfp.52.2_59","DOIUrl":"https://doi.org/10.20659/jjfp.52.2_59","url":null,"abstract":"*連絡先(Corresponding author)E-mail : a-taka@agr.u-ryukyu.ac.jp 1 琉球大学農学部附属亜熱帯フィールド科学教育研究センター与那フィールド(905-1427 沖縄県国頭郡国頭村字与那685) Yona Field, Subtropical Field Science Center, Faculty of Agriculture, University of the Ryukyus, 685 Yona, Kunigami, Okinawa 905-1427, Japan 2 琉球大学国際地域創造学部(903-0213 沖縄県中頭郡西原町字千原1) Faculty of Global and Regional Studies, University of the Ryukyus, 1 Senbaru, Nishihara, Okinawa 903-0213, Japan 高嶋敦史・大島順子:沖縄島やんばる地域の約65年生二次林における大径木の分布と地形の関係,森林計画誌 52:59~65,2019 大径木は,亜熱帯性照葉樹林の保全において重要な指標であると考えられている。そこで 本研究では,沖縄島やんばる地域に広がる約65年生の二次林において,大径木の分布と地形の関係を小流域レ ベルで調査した。その結果,胸高直径30cm以上の大径木の密度は全樹種合計で91.0本/ha であり,そのうち イタジイが65.2%,イジュが20.9%,オキナワウラジロガシが6.4%を占めていた。やんばる地域の非皆伐成熟 林を調査した既往の研究と比較すると,大径木の密度は半分以下に留まっていた。調査対象の小流域を尾根, 中間斜面,谷の3つの地形に区分して大径木の密度やサイズを比較したところ,尾根では大径木の密度が谷や 中間斜面の半分以下であった。また,イタジイやイジュは,尾根より谷でサイズが大きくなっていた。このよ うに,やんばる地域の約65年生の二次林では,谷を中心にサイズの大きな幹が分布していた。また,谷から中 間斜面にかけては過去の伐採を免れた老齢な大径木も僅かながら残っており,谷や中間斜面は二次林において も生態系管理や生物相保全の面で大きな役割を果たす重要な立地である可能性が示唆された。","PeriodicalId":234210,"journal":{"name":"Japanese Journal of Forest Planning","volume":"189 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134065565","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
The Means and Problems of Establishing Indicators for Municipal Governments in Forest Planning 市政府森林规划指标制定的方法与问题
Japanese Journal of Forest Planning Pub Date : 2019-04-25 DOI: 10.20659/jjfp.52.2_49
Yusuke Yamada
{"title":"The Means and Problems of Establishing Indicators for Municipal Governments in Forest Planning","authors":"Yusuke Yamada","doi":"10.20659/jjfp.52.2_49","DOIUrl":"https://doi.org/10.20659/jjfp.52.2_49","url":null,"abstract":"Yusuke Yamada: The Means and Problems of Establishing Indicators for Municipal Governments in Forest Planning. J. For. Plann. 52: 49~57, 2019 Criteria and indicators are efficient for sustainable forest management. Examples for applying indicators to forest planning could be highly suggestive. In this study, the processes of establishment and operation of forest master plans by advanced municipalities that utilize indicators were clarified by interviews. Processes of establishing indicators are categorized and general problems are extracted. Result showed that each set of indicators exhibited a current situation and issues of locality. Indicators were established using Top-down/Bottom-up, Output/Outcome, and Requirement/ Current approaches. There were issues regarding comprehensiveness, consistency, dissemination, and verification. To enhance the effect of forest planning, including local-level indicators, it is","PeriodicalId":234210,"journal":{"name":"Japanese Journal of Forest Planning","volume":"115 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117340834","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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