森林98-214

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1 : Daisuke Kabeya, Hajime Utsugi, Kazuto Kita, Akira Ogura, Naofumi Watanabe, Kohei Fujimoto, Makoto Yamazaki, Tadayuki Yashiro, Takuya Kajimoto, Hiroshi Tanaka 2016The Performance of Containerized Tree Seedlings after Outplantings Evaluated from Multi-site Data Set. J Jpn For Soc 98: Containerized tree seedlings are expected to exhibit high survivorship and good growth after outplanting; however, a unified consensus on the performance of containerized seedlings in Japan remains undetermined. To understand the universal properties of the performances of containerized seedlings after outplanting, the survival ratio and height and diameter growth rate of two stock typescontainerized seedlings and bare-root seedlingswere estimated from experiment sites covering five prefectures and five species and compared between stock types. The result of parameter estimation using hierarchal Bayesian models revealed that the median survival ratio of containerized seedlings across all species was, which was not different from that of bare-root seedlings. The estimated height and diameter growth rates were also similar between stock types. The sturdiness quotientsq, the ratio of height and diameterwas higher in containerized seedlings than in bare-root seedlings of all species immediately after outplanting. However, the difference in SQ between stock types diminished year after outplanting. These results suggest that containerized tree seedlings generally show performances equivalent to those of bare-root seedlings after outplanting. Therefore, other properties of containerized seedlings, such as ease of cultivation and low-labor planting present more attractive advantages than those of good performance after outplanting. Key words: containerized seedling, mass data-set, survival ratio, growth rate, hierarchal Bayesian model Landis et al. ; Corresponding author kabeta@ffpri.affrc.go.jp Forestry and Forest Product Research Institute, Matsunosato, Tsukuba, Ibaraki, Japan Hokkaido Research Organization, Forest Research Department, Koshunai, Bibai, Hokkaido, Japan Nakanoto General Agriculture Forestry office, Ishikawa Prefecture, Ni-bu, Kojima-machi, Nanao, Ishikawa, Japan Kochi Prefectural Forestry Technology Research Center, Ohdaira, Tosayamada, Kami, Kochi, Japan Forestry Technology Development and Support Center, Kanto Regional Forest Office, Kurusu, Kasama, Ibaraki, Japan

2 Rasanen Brissette et al. Wilson et al. Landhaeusser et al. HKD ISK N t d d Clark Nexpd tb N t b a ad asp esapling aaspesapling asp atype sp

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多点データからみたコンテナ苗の植栽後の特性２１９図４苗木供給元別でみた樹高基部直径の成長速度のベイズ推定値中央値および９５ベイズ信用範囲推定値の信用範囲が樹種ごとの成長速度の平均値実線およびその９５ベイズ信用範囲破線を含まない場合成長速度が平均より大きい小さい苗木であることを示すシンボルはがコンテナ苗が裸苗をあらわす異なる背景の塗り分けは

6 多点データからみたコンテナ苗の植栽後の特性２１９図４苗木供給元別でみた樹高基部直径の成長速度のベイズ推定値中央値および９５ベイズ信用範囲推定値の信用範囲が樹種ごとの成長速度の平均値実線およびその９５ベイズ信用範囲破線を含まない場合成長速度が平均より大きい小さい苗木であることを示すシンボルはがコンテナ苗が裸苗をあらわす異なる背景の塗り分けは植栽試験の違いをあらわす線のパラメータ推定値を示す樹種間で成長速度とりわけ直径成長速度の違いはみられるもののいずれの種においても樹高成長速度および直径成長速度の推定値の分布範囲はコンテナ苗と裸苗の間で大きく異ならなかった同一試験地内にコンテナ苗裸苗の両方が植栽されており樹高成長速度が比較可能な３０試験地のうち１０試験地ではコンテナ苗の推定樹高成長速度の５０範囲が裸苗の推定樹高成長速度の５０範囲を上回っていたまた９試験地では裸苗の推定樹高速度の５０範囲がコンテナ苗の推定樹高速度の５０範囲を上回っており１１試験地ではコンテナ苗と裸苗の推定樹高成長速度の分布範囲がほぼ等しかった同様に直径成長速度が比較可能な３１試験地のうち１９試験地ではコンテナ苗の推定直径成長速度の５０範囲が裸苗の推定直径成長速度の５０範囲を上回っていたまた２試験地では裸苗の推定直径成長速度の５０範囲がコンテナ苗の推定直径成長速度の５０範囲を上回っており１０試験地ではコンテナ苗と裸苗の推定直径成長速度の分布範囲がほぼ等しかった樹高成長速度直径成長速度はいずれも植栽地および苗木供給元の違いによってばらつきが生じていた図４

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9 Brissette JC, Barnett JP, Landis TDContainer seedlings. In: Forest Regeneration Manual. Duryea ML, Dougherty PMedsSpringer, Clark JSModels for Ecological Data: An Introduction. Princeton University Press Dobner JM, Trazzi PA, Higa AR, Seitz RAEffect of container size and planting method on growth of a nine-years-old Pinus taeda stand. Sci For : : : : : : Kamo K, Jamalung L, Mohammad AGrowth and biomass of Acacia mangium Willd. stands planted as bare-root and container seedlings. JARQ : Landhaeusser SM, Lieffers VJDefoliation increases risk of carbon starvation in root systems of mature aspen. Trees : Landhäusser SM, Pinno BD, Lieffers VJ, Chow PSPartitioning of carbon allocation to reserves or growth determines future performance of aspen seedlings. Forest Ecol Manage : Landis TD, Tinus RW, McDonald SE, Barnett JPThe Container tree Nursery ManualVolume : The Container Tree Nursery Manual. United States Department of Agriculture Forest Service I : Pinto JR, Marshall JD, Dumroese RK, Davis ASEstablishment and growth of container seedlings for reforestation: a function of stocktype and edaphic conditions. Forest Ecol Manage : Rasanen PKContainerized forest tree seedling production and development prospects in Finland and Scandinavia. In: Proceedings, Canadian Containerized Tree Seedling. Scarratt JB et al.edsdepartment of the Environment, Canadian Forestry Service II : Thompson BESeedling morphological evaluation- what you can tell by looking. In: Proceedings: Evaluating Seedling Quality: Principles, Procedures, and Predictive Abilities of Major Tests, Duryea ML edoregon State University, Wilson ER, Vitols KC, Park ARoot characteristics and growth potential of container and bare-root seedlings of red oakquercus rubra L.in Ontario, Canada. New Forests : : :

論文

*, 1 1 Selection of superior Frankia spp. for rapid cultivation of Alnus hirsuta seedlings Maki Saito *, 1 and Mikio Hasegawa 1 4 2 4 28 9 30 cm 30 cm 70 % 5 Abstract: In order to develop the rapid cultivation