著者
橋本 啓史 澤 邦之 田端 敬三 森本 幸裕 西尾 伸也
出版者
社団法人日本造園学会
雑誌
ランドスケープ研究 : 日本造園学会誌 : journal of the Japanese Institute of Landscape Architecture (ISSN:13408984)
巻号頁・発行日
vol.69, no.5, pp.529-532, 2006-03-27
被引用文献数
3 2

Tree hollows are important nest and roost sites for various animals such as Ninox scutulata even in urban areas, but the number of such sites is very low. In this study, we recorded the characteristics of legacy trees with hollows in an urban area within Kyoto City (25km^2), Japan in 2002. We found 288 legacy trees with a trunk perimeter more than 300 cm and 94 trees with hollows. Legacy trees of Castanopsis sieboldii (an ever-green broad-leaf tree) and Aphananthe aspera (a deciduous broad-leaf tree) had a high rate of hollows. All six legacy trees of Cinnamomum camphora (an ever-green broad-leaf tree) with more than 1.5 m of DBH had hollows, but other trees of this species did not have hollows even when the trunk perimeter was more than 300 cm. We applied a logistic regression model to trunk perimeter and the probability of hollow-bearing in each species in an urban woods. We also predicted tree perimeter in relation to age from the annual relative growth rate in each species. A. aspera trees showed the highest incidence of tree hollows in relation to trunk perimeter, but these trees grow very slowly. Celtis sinensis trees grow rapidly, but they have a lower rate of tree hollows than A. aspera. Z. serrata trees grow at an intermediate speed and rarely have tree hollows. Cinnamomum camphora trees grow rapidly. Castanopsis sieboldii trees grow at an intermediate speed.

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@sevenwitch ムクノキは樹洞が出来易いそうです。http://ci.nii.ac.jp/naid/110006655562ご覧になったムクノキには樹洞はありましたか?
RT @ronbuntter RT @ShinKodera:ムクノキは樹洞ができやすい!? 約440年(早ければ約180年)で胸高幹周300cmに達しその時に穴径10cm以上の樹洞を有する確立が40% http://ci.nii.ac.jp/naid/110006655562
ムクノキは樹洞ができやすい!? ムクノキは約440年(早ければ約180年)で胸高幹周300cmに達し、その時に穴径10cm以上の樹洞を有する確立が40%であるそうです。 http://ci.nii.ac.jp/naid/110006655562

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