publicreadtree census, Long-term observation plot No.2, Uryu experimental forest, Hokkaido, Japan, 1988-2008, 毎木調査,長期観察林番号2号,北海道Uryu Experimental Forest, 雨龍研究林Uryu Experimental Forest, Northern Forestry Research and Development Office, Forest Research Station, Field Science Center for Northern Biosphere, Hokkaido University, 北海道大学北方生物圏フィールド科学センター森林圏ステーション北管理部雨龍研究林Mosiri,母子里Horokanai, 幌加内, Hokkaido, 北海道, 074-0741 Japan, 日本Horokanai,北海道074-0741+81-165-38-2171+81-165-38-2410uryu@fsc.hokudai.ac.jphttp://forest.fsc.hokudai.ac.jp/~exfor/fr/1321332206744OriginatorA Abies sachalinensis Mast plantaion forest has been investigated to examine its stand structure and dynamics. A study plot with area 0.25-ha was introduced in 1988, followed by repeated 5 censuses (10year interval)., Iperfomed typhoon in 2005., 北海道大学雨龍研究林123林班トドマツ人工林の林分構造および動態を調べるため、1988年に面積0.25haの調査区を設け、10年間隔で、胸高・樹高・樹冠幅・枝下高を計測している.2005年に台風被害調査を行っている.long-term, observation plot, uryu, typhoonData users are required to place an acknowledgement in any publication in which the data are used, and to send a copy of the publication with an usage report., 公表にあたっては、データの出典を謝辞等に明記するとともに、成果品および利用報告を提出する.uryu-123142.11142.1144.1144.1119881321332206744Location, 位置The study plot is located in compartment 123 of the Uryu Experimental Forest., 調査地は雨龍研究林123林班に位置する. The size of the study plot is 2500m2 (50×50 m.; N44 12 286, E141 11 701; N44 11 304, E141 11 664;)girth at breast height, 胸高周囲長The census targeted trees with girth at breast height (1.3 m) equal to or larger than 30-cm in the plot. Trees were identified, and their girth at breast height was recorded., 調査区内の胸高周囲長30cm以上の樹木の胸高周囲長および樹種名を記録.steel tape, コンベックス