Japanese Journal of Forest Planning最新文献

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Estimating three-dimensional tree shape of 40-year-old evergreen conifer using terrestrial laser scanner and a voxel-based analysis 利用地面激光扫描仪和体素分析估算40年常绿针叶树的三维树形
Japanese Journal of Forest Planning Pub Date : 2020-08-31 DOI: 10.20659/jjfp.54.1_13
Masuto Ebina, W. Ishizuka, T. Abe
{"title":"Estimating three-dimensional tree shape of 40-year-old evergreen conifer using terrestrial laser scanner and a voxel-based analysis","authors":"Masuto Ebina, W. Ishizuka, T. Abe","doi":"10.20659/jjfp.54.1_13","DOIUrl":"https://doi.org/10.20659/jjfp.54.1_13","url":null,"abstract":"Estimating three-dimensional shape of 40-year-old evergreen using terrestrial laser scanner and a voxel-based Three-dimensional point cloud data can be extracted using a terrestrial laser scanner, and three-dimensional forest information is applicable to various forestry studies. It is required that the estimation of a three-dimensional structure is accurate enough. Here, a voxel-based data processing seems to be an effective method because it divides space using the virtual cube with reduced data. In this study, we attempt to estimate a three-dimensional structure in evergreen coniferous species in a mature stand. Measurements were conducted using a major species of the boreal forest, Abies sachalinensis , in a 40-year-old plantation site. Using point cloud data obtained by terrestrial laser scanner, the vertical trend of trunk diameter was firstly measured, and then the stem volume and branch-leaf biomass at every 2 m layer were estimated using a voxel-based method with eight kinds of candidate size options. They were compared to the actual data acquired after artificial felling of trees. Trunk diameter was successfully estimated from ground to tree height of more than 60%, showing an RMSE of 2.30 cm. It is also demonstrated that error tends to increase as the measurement position gets higher. Stem volume represented high correlation with the manually measured values, except for the case that uses a maximum size of voxel size(0.2 m).Especially, the voxel size of 0.08 m","PeriodicalId":234210,"journal":{"name":"Japanese Journal of Forest Planning","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132154255","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
Accuracy validation of various measurement instruments for acquisition of high precision forest resource information 各种测量仪器对高精度森林资源信息采集的精度验证
Japanese Journal of Forest Planning Pub Date : 2020-08-31 DOI: 10.20659/jjfp.54.1_55
N. Matsumura, T. Arita, Yuki Hirose, S. Numamoto, Hiromasa Shimada, Hisako Nomura
{"title":"Accuracy validation of various measurement instruments for acquisition of high precision forest resource information","authors":"N. Matsumura, T. Arita, Yuki Hirose, S. Numamoto, Hiromasa Shimada, Hisako Nomura","doi":"10.20659/jjfp.54.1_55","DOIUrl":"https://doi.org/10.20659/jjfp.54.1_55","url":null,"abstract":"*連絡先(Corresponding author)E-mail : nma@bio.mie-u.ac.jp 1 三重大学大学院生物資源学研究科(514-8507 三重県津市栗真町屋町1577) Graduate School of Bioresources, Mie University, 1577 Kurima-machiya, Tsu City 514-8507, Japan 2 和歌山県庁(640-8585 和歌山県和歌山市小松原通1-1) Wakayama Prefecture Government, 1-1 Komatubara-tori, Wakayama City 640-8585, Japan 3 奈良県庁(630-8501 奈良県奈良市登大路町30) Nara Prefecture Government, 30 Noboriooji, Nara City 630-8501, Japan 4 三重県林業研究所(515-2602 三重県津市白山町二本木3769-1) Mie Prefecture Forestry Research Institute, 3769-1 Nihogi, Hakusan, Tsu City 515-2602, Japan 松村直人・有田貴洋・廣瀬裕基・沼本晋也・島田博匡・野村久子:高精度森林資源情報の取得に向けた各種計 測装置の精度検証,森林計画誌54:55~61,2020 樹木の大きさを決定するためには,一般的に樹高と胸高直 径が必要とされている。これらの森林情報をより効率的に,そして安価に取得するために「航空レーザ計測」 「ドローン写真計測」「地上レーザ計測(TLS)」を実行,比較して,各計測方法の特性を把握し,今後の森林 情報の効率的取得について検討した。なお,TLS 計測については,性能の異なる2機種(OWL,FARO)を 用いた。TLS 計測では胸高直径のより直接的な計測が可能であるため,胸高直径の2乗平均平方根誤差 (RMSE)は機種OWLで1.1cm,機種 FAROで1.3cmと各計測方法の中で最も計測精度の高い結果が得られ た。しかし,樹高精度は樹頂点にレーザが届きにくいため,RMSEは機種OWLで2.9m,機種FAROで1.8 mとドローン写真計測1.2mと比べ大きくなった。作業時間と費用比較においても,これら計測装置の活用 で,1/5から1/50の大幅な効率化とコスト削減が期待できた。 キーワード:スマート林業,ICT,TLS,UAV,森林資源情報","PeriodicalId":234210,"journal":{"name":"Japanese Journal of Forest Planning","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126939158","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
How to make UAV flight plan using Litchi 如何利用荔枝制作无人机飞行计划
Japanese Journal of Forest Planning Pub Date : 2020-05-19 DOI: 10.20659/jjfp.53.2_89
T. Murakami, Tomoe Shinohara
{"title":"How to make UAV flight plan using Litchi","authors":"T. Murakami, Tomoe Shinohara","doi":"10.20659/jjfp.53.2_89","DOIUrl":"https://doi.org/10.20659/jjfp.53.2_89","url":null,"abstract":"近年,新たなリモートセンシングのプラットフォー ムとしてUAV(Unmanned Aerial Vehicle)が大変大 きな注目を受けている。UAVの利点として「再測の 時間間隔を自分で決めることができる」,「低高度飛行 によって対象物に,より近づくことができ,空間分解 能の高いデータを取得できる」,「運用コストを低く抑 えることができる」などが挙げられている(Anderson and Gaston,2013)。森林リモートセンシングにおいて もUAVは既に幅広く活用されており,今後の展開が おおいに期待されている(村上,2018)。 UAV空撮画像は,Metashape(Agisoft 社)や Pix4 Dmapper(Pix4D社)といった SfM(Structure from Motion)ソフトウェアを用いて三次元点群を生成さ せることが多い。それらのマニュアル(例えば,Pix4 Dmapper のマニュアル)では,対地高度一定で撮影 を行うこと,と指示されている。これはつまり空撮対 象エリアの地形に起伏がある場合,地形に沿ってUAV を飛行させることを要求するものである。言い換える と,対地高度一定での飛行が求められている(図-1 参照)。この対地高度を一定に飛行させるためには, その地点の標高を考慮して,その標高値に撮影高度 (対地高度)を加えなければならない。 対地高度一定のUAV空撮を現場で確実に行うため に著者らは検討を重ねた結果,UAV空撮を実行する アプリのひとつであるLitchiに着目した。今回,Litchi を利用した空撮計画の策定手法について紹介する。 なお,本論のGIS環境はArcGIS Pro(ver.2.4,ESRI 社)である。そのため,本論におけるGIS は ArcGIS Pro を意味しており,処理の名称はArcGIS Proのもの に該当する。ユーザによってGIS 環境は異なると思 われるので,使用するGIS が異なる場合は同等の作 業内容で置き換えてもらいたい(GIS によっては同様 の機能がない場合もありうる)。また,設定する座標 系は平面直角座標系,地理座標系(経度,緯度)であ る。測地系は JGD2011もしくはWGS84とする。本論 における手順の流れを図-2に示す。","PeriodicalId":234210,"journal":{"name":"Japanese Journal of Forest Planning","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115298508","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
Report on Japan Society of Forest Planning Spring Symposium 2019:Forest management planning for 2050-­Entering an era of population decline 2019年日本森林规划学会春季研讨会报告:2050年森林管理规划——进入人口下降时代
Japanese Journal of Forest Planning Pub Date : 2020-05-19 DOI: 10.20659/jjfp.53.2_95
T. Murakami, Tomoe Shinohara, Fujiya Tsuji
{"title":"Report on Japan Society of Forest Planning Spring Symposium 2019:Forest management planning for 2050-­Entering an era of population decline","authors":"T. Murakami, Tomoe Shinohara, Fujiya Tsuji","doi":"10.20659/jjfp.53.2_95","DOIUrl":"https://doi.org/10.20659/jjfp.53.2_95","url":null,"abstract":"まず,森林・林業基本計画における森林の有する多 面的機能の発揮に関わる目標にふれたい。スギ,ヒノ キの人工林について,将来的には自然条件が良く,林 業経営に適した地域のみで残し,将来的には660万 ha まで減らしていく。それ以外の地域では針広混交林化 等を目指していく。これを達成するには様々な対策, 政策が必要であるが,その中心は森林計画制度である。 全国44の広域流域ごとに主伐量,間伐面積などの目標 を決め,それをもとに地域森林計画を158の流域ごと に目標を決める。さらに市町村森林整備計画で様々な 施業の規範を作る。また,伐採造林届出などの規制的 な手法,補助金などの誘導的な手法を利用していく。 しかし,これらの手法だけではなかなか思うようには いかない現状にある。 次に,森林管理の課題である。森林所有者の四分の 一は不在村で,そのうち24%は森林相続の手続きを何 もやっていない。所有者の中でも,森林経営を縮小し たい,今後やっていくつもりはない,と回答した人は 60%にものぼる。登記簿上の所有者に郵送,通知をし たが到達しなかったという事例が全体の23%で発生し ており,所有者不明の森林が数多く存在する。日本の 森林の三分の一程度は経営計画が立てられているが, 残りの三分の二については経営計画が立てられていな い。林業経営に興味がない,次世代の経営者不足,そ もそも森林所有の意識がない,などの問題があり政策 が打ちづらい現状にある。森林法は森林所有者が森林 をしっかり管理することを前提としており,その前提 が崩れると目標への誘導は難しくなる。そのため,従 来の手法だけでなく新しい手法を考える必要がある。 先述の針広混交林化には,裏を返せば今後儲けるこ とのできない森林を作っていくということでもあり, 所有者の負担が大きいことになる。また,林業のサイ","PeriodicalId":234210,"journal":{"name":"Japanese Journal of Forest Planning","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125709685","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
Back Matter (53-2) 背部物质(53-2)
Japanese Journal of Forest Planning Pub Date : 2020-05-19 DOI: 10.20659/jjfp.53.2_107
{"title":"Back Matter (53-2)","authors":"","doi":"10.20659/jjfp.53.2_107","DOIUrl":"https://doi.org/10.20659/jjfp.53.2_107","url":null,"abstract":"","PeriodicalId":234210,"journal":{"name":"Japanese Journal of Forest Planning","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131237755","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
Report on SFEM 2019: The International Symposium of Sustainable Forest Ecosystem Management- Accelerating Innovation for Multiple Ecosystem Services 2019年可持续森林生态系统管理国际研讨会报告:加速多种生态系统服务的创新
Japanese Journal of Forest Planning Pub Date : 2020-05-19 DOI: 10.20659/jjfp.53.2_103
Tatsuki Yoshii, N. Matsumura
{"title":"Report on SFEM 2019: The International Symposium of Sustainable Forest Ecosystem Management- Accelerating Innovation for Multiple Ecosystem Services","authors":"Tatsuki Yoshii, N. Matsumura","doi":"10.20659/jjfp.53.2_103","DOIUrl":"https://doi.org/10.20659/jjfp.53.2_103","url":null,"abstract":"2019年8月27日(火)から29日(木)にかけて,北海道 札幌市道民活動センター「かでる2.7」および富良野 市東京大学演習林,千歳支笏地域の国有林において, 国際共同シンポジウム「Sustainable Forest Ecosystem Management2019」が開催された。 主催は森林計画学会。共催はKorea Society of Forest Management and Information,Taiwan Society of Forest Ecosystem Management,Chinese Forest Association,FORMATH Research Group,東京大学 大学院農学生命科学研究科附属演習林北海道演習林, 森林 GIS フォーラムである。参加者は合計50名であ り,日本24名,台湾13名,韓国10名,フィリピン3名 という内訳となった。 初日は「かでる2.7」にて口頭発表12件(表-1), ポスター発表18件(表-2)が行われた。また発表終 了後,懇親会が催された。翌28日・29日はエクスカー ションが実施され,東京大学演習林および千歳支笏地 域の国有林で見学を行った。 今回の国際共同シンポジウムは,日本と台湾との研 究交流が図られた2006年から2008年の森林計画学会夏 期セミナー以来の研究交流活動の一環であり,今回で 8回目の開催となる。","PeriodicalId":234210,"journal":{"name":"Japanese Journal of Forest Planning","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129192300","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
Tree species identification based on venation patterns of leaf images photographed with a mobile device in the outdoors 基于户外移动设备拍摄的叶片图像脉状模式的树种鉴定
Japanese Journal of Forest Planning Pub Date : 2020-05-19 DOI: 10.20659/jjfp.53.2_43
Y. Minowa, Keita Asao
{"title":"Tree species identification based on venation patterns of leaf images photographed with a mobile device in the outdoors","authors":"Y. Minowa, Keita Asao","doi":"10.20659/jjfp.53.2_43","DOIUrl":"https://doi.org/10.20659/jjfp.53.2_43","url":null,"abstract":"53: 43~52, The aim of this study was to identify tree species based on venation patterns of leaf images,which were photographed with a mobile device in the outdoors. Forty leaves (10 species) collected at the Kyoto University and Kyoto Prefectural University Campus were used as samples in this study. Seven learning patterns were determined from the differences in photography methods and conditions. The venation patterns were evaluated by histograms of oriented gradients (HOG). Two decision-tree algorithms (J48, RandomForest), a lazy learning (IBk) and a neural network (MultilayerPerceptron) were used for machine-learning classification. A performance evaluation of the proposed model was performed with Matthews correlation coefficient ( MCC ) and correct answer rate. The classification accuracy for test data was verified by the 10-fold cross-validation method. Every learning pattern resulted in classification accuracy for training data; however, the classification accuracy for test data varied greatly according to the difference in learning patterns. By considering camera-to-subject distance, the angle at which subjects were photographed, and the light environment, high classification accuracy could be obtained from the leaf images, which were photographed with a mobile device.","PeriodicalId":234210,"journal":{"name":"Japanese Journal of Forest Planning","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128651596","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: 3
Effect of top soil removal on transition of initial growth of Japanese larch 表层土去除对落叶松初生过渡的影响
Japanese Journal of Forest Planning Pub Date : 2020-05-19 DOI: 10.20659/jjfp.53.2_63
M. Nakagawa, Naoaki Tashiro
{"title":"Effect of top soil removal on transition of initial growth of Japanese larch","authors":"M. Nakagawa, Naoaki Tashiro","doi":"10.20659/jjfp.53.2_63","DOIUrl":"https://doi.org/10.20659/jjfp.53.2_63","url":null,"abstract":"*連絡先(Corresponding author)E-mail : nakagawa-masahiko@hro.or.jp 1 北海道立総合研究機構林業試験場(079-0198 北海道美唄市光珠内) Forestry Research Institute, Hokkaido Research Organization, Koshunai, Bibai-shi, Hokkaido079-0198,Japan 2 九州大学農学部附属演習林(089-3705 北海道足寄郡足寄町) Ashoro Research Forest, Department of Agriculture, Kyushu University, Ashoro-cho, Ashoro-gun, Hokkaido089-3705,Japan 中川昌彦・田代直明:表土除去がカラマツの初期成長の推移に与える影響,森林計画誌53:63~68,2020 表 土除去がカラマツの初期成長の推移に与える影響の調査を行った。北海道東神楽町の試験地では,植栽8年後 の樹高,胸高直径は,表土を全く除去していない草刈地拵区と表土除去区の間に有意な違いはみられなかった。 北海道足寄町の試験地では,植栽5年後の樹高,胸高直径は,表土浅剥区で一番大きく,次いで表土を移動さ せてない草刈地拵区が大きく,表土深剥区で一番小さかった。これまで,表土を除去することでカラマツの初 期成長が大きく低下すると報告されていたが,本研究の結果から,表土除去を行っても植栽5~8年後のカラ マツの成長が低下することはない場合や,よくなる場合もあると考えられた。しかし,土壌を深く剥いで,植 物の根が成育できる有効土層が極端に薄くなると,初期成長が大きく劣ると考えられた。 キーワード:カラマツ,表土除去,成長,土壌","PeriodicalId":234210,"journal":{"name":"Japanese Journal of Forest Planning","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122316864","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
If Sakhalin spruce or Sakhalin fir die in windbreaks on seasonally frozen soils, what species can be recommended? 如果库页岛云杉或库页岛冷杉在季节性冻土的防风林中死亡,可以推荐哪些物种?
Japanese Journal of Forest Planning Pub Date : 2020-05-19 DOI: 10.20659/jjfp.53.2_81
M. Nakagawa
{"title":"If Sakhalin spruce or Sakhalin fir die in windbreaks on seasonally frozen soils, what species can be recommended?","authors":"M. Nakagawa","doi":"10.20659/jjfp.53.2_81","DOIUrl":"https://doi.org/10.20659/jjfp.53.2_81","url":null,"abstract":"","PeriodicalId":234210,"journal":{"name":"Japanese Journal of Forest Planning","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122901872","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 (53-2) 正面问题(53-2)
Japanese Journal of Forest Planning Pub Date : 2020-05-19 DOI: 10.20659/jjfp.53.2_0
{"title":"Front Matter (53-2)","authors":"","doi":"10.20659/jjfp.53.2_0","DOIUrl":"https://doi.org/10.20659/jjfp.53.2_0","url":null,"abstract":"","PeriodicalId":234210,"journal":{"name":"Japanese Journal of Forest Planning","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122457167","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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