WEKO3
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針広混交天然林における樹木の個体数と現存量の動態 : 北海道演習林前山保存林の事例
http://hdl.handle.net/2261/22524
http://hdl.handle.net/2261/22524fb3565df-b619-44a6-9cf9-fd3ffd9a04ef
名前 / ファイル | ライセンス | アクション |
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esrh107001.pdf (1.2 MB)
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Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
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公開日 | 2012-07-17 | |||||
タイトル | ||||||
タイトル | 針広混交天然林における樹木の個体数と現存量の動態 : 北海道演習林前山保存林の事例 | |||||
言語 | ||||||
言語 | jpn | |||||
キーワード | ||||||
主題 | 針広混交林 | |||||
主題Scheme | Other | |||||
キーワード | ||||||
主題 | 胸高断面積 | |||||
主題Scheme | Other | |||||
キーワード | ||||||
主題 | 個体数 | |||||
主題Scheme | Other | |||||
キーワード | ||||||
主題 | 成長量分布 | |||||
主題Scheme | Other | |||||
キーワード | ||||||
主題 | mixed forest with coniferous and broad-leaved species | |||||
主題Scheme | Other | |||||
キーワード | ||||||
主題 | Basal Area | |||||
主題Scheme | Other | |||||
キーワード | ||||||
主題 | Population | |||||
主題Scheme | Other | |||||
キーワード | ||||||
主題 | Increment distribution | |||||
主題Scheme | Other | |||||
資源タイプ | ||||||
資源 | http://purl.org/coar/resource_type/c_6501 | |||||
タイプ | departmental bulletin paper | |||||
その他のタイトル | ||||||
その他のタイトル | Dynamics of Population and Basal Area in a Mixed Forest with Coniferous and Broad-leaved Species : A Case Study of Large-scale and Long-term Observation Plot in the Tokyo University Forest in Hokkaido | |||||
著者 |
山本, 博一
× 山本, 博一× 梶, 幹男× 芝野, 伸策× 岡村, 行治× 笠原, 久臣× 道上, 昭夫× 広川, 俊英 |
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著者別名 | ||||||
識別子 | 54170 | |||||
識別子Scheme | WEKO | |||||
姓名 | YAMAMOTO, Hirokazu | |||||
著者別名 | ||||||
識別子 | 54171 | |||||
識別子Scheme | WEKO | |||||
姓名 | KAJI, Mikio | |||||
著者別名 | ||||||
識別子 | 54172 | |||||
識別子Scheme | WEKO | |||||
姓名 | SHIBANO, Shinsaku | |||||
著者別名 | ||||||
識別子 | 54173 | |||||
識別子Scheme | WEKO | |||||
姓名 | OKAMURA, Koji | |||||
著者別名 | ||||||
識別子 | 54174 | |||||
識別子Scheme | WEKO | |||||
姓名 | KASAHARA, Hisaomi | |||||
著者別名 | ||||||
識別子 | 54175 | |||||
識別子Scheme | WEKO | |||||
姓名 | MICHIGAMI, Akio | |||||
著者別名 | ||||||
識別子 | 54176 | |||||
識別子Scheme | WEKO | |||||
姓名 | HIROKAWA, Toshihide | |||||
著者所属 | ||||||
著者所属 | 東京大学大学院農学生命科学研究科附属演習林千葉演習林 | |||||
著者所属 | ||||||
著者所属 | 東京大学大学院新領域創成科学研究科環境学専攻 | |||||
著者所属 | ||||||
著者所属 | 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 | |||||
著者所属 | ||||||
著者所属 | University Forest in Chiba, Graduate School of Agriculture and Life Science, The University of Tokyo | |||||
著者所属 | ||||||
著者所属 | Department of Environmental studies, Graduate School of Frontier Sciences, The University of Tokyo | |||||
著者所属 | ||||||
著者所属 | University Forest in Hokkaido, Graduate School of Agriculture and Life Science, The University of Tokyo | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | 東京大学北海道演習林の針広混交林に設置された36.25haの大面積プロットにおける5年の間隔をおいた2回の胸高直径測定の結果から樹木の個体数と現存量の変動を解析した。個体数は針葉樹が増加し,広葉樹が減少し,全体では微増した。風害のギャップに展開していた広葉樹のうち陽樹が減少し,本数で上位を占めるトドマツやシナノキによる寡占化と北方林における優占樹種であるエゾマツの個体数減少の傾向が認められた。広葉樹の直径分布形においてL型分布が崩れ,針葉樹主体の林分に移行していることが示唆された。胸高断面積合計を現存量の指標に用いたところ,針葉樹・広葉樹ともに増加しており,5年間の純成長率は3%で,針葉樹が占める割合が64%であった。広葉樹の大径木は直径成長が低く,林分成長量の大きな部分を胸高直径40cm前後の針葉樹が占めていた。また,この評価方法では枝分かれの多い広葉樹大径木の現存量が過小評価される可能性が示された。 | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | This paper analyzes the dynamics of basal area and population for five years in a large-scale permanent plot of mixed forest with coniferous and broad-leaved species of the Tokyo University Forest in Hokkaido. A complete enumeration of d.b.h. has practiced in 1993 and 1998. In population, conifer increased and broad-leaved tree decreased. Abies sachalinensis and Tilia japonica, which are dominant species, increased in population. On the other hand Picea jezoensis, which is another dominant species, decreased. This is a serious problem in boreal forest management. The diameter distribution of broad-leaved trees loses L-shape and the stand structure will be composed of mainly conifer. The basal area increased both in conifer and broad-leaved trees, and the net increment rate for five years is 3%, in which conifer occupies 64%. The most part of the basal area increment occupies large sized conifers, which are around 40 cm in d.b.h., and the growth rate of large sized broad-leaved trees is remarkably low. | |||||
書誌情報 |
東京大学農学部演習林報告 巻 107, p. 1-20, 発行日 2002 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 03716007 | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AN00162451 | |||||
日本十進分類法 | ||||||
主題 | 610 | |||||
主題Scheme | NDC | |||||
出版者 | ||||||
出版者 | 東京大学大学院農学生命科学研究科附属演習林 | |||||
出版者別名 | ||||||
The Tokyo University Forests |