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Title: 御岳山田ノ原のシラビソ林の樹形と生産力について
Other Titles: Some Discussions on Tree Form and Dry-Matter Production of a Fir Stand at Tanohara of Mt. Ontake
Authors: 大畠, 誠一  KAKEN_name
鬼石, 長作  KAKEN_name
Author's alias: Oohata, Seiichi
Oniishi, Chosaku
Issue Date: 14-Dec-1974
Publisher: 京都大学農学部附属演習林
Journal title: 京都大学農学部演習林報告
Volume: 46
Start page: 51
End page: 57
Abstract: 長野県木曽御岳山で, 森林限界付近に成立するシラビソ天然林の樹形と生産力を調べた。冬期に雪の吹きだまりとなるこの地域のシラビソは長野県下の他の地域のシラビソに比べるとズングリした形をもち, 幹の形は座屈荷重に対して強い形となっていた。林分の現存量は地上部分で35. 5 - 135. 4t/haと推定され, 葉量は4. 2 - 13. 2t/haと推定された (表1)。また葉, 枝, 幹の生産量はそれぞれ0. 75 - 2. 48t/ha・yr, 0. 11 - 0. 37t/ha・yr, 0. 32 - 1. 10t/ha・yrと推定された (表2)。このシラビソ林は他のシラビソ林に比べて著しく生産量が低く, 一定葉量当りの生産量も低い値をもっていた。また, 生産された物質は特に生産器官 (葉) に多く配分されていた。
Tree form and annual production of a natural forest of Abies veitchii were investigated. The forest grows under a heavy snow deposit near the timber line on the flattish slope of Mt. Ontake in Nagano Prefecture. The trunk form of the tree on the region was very stuggy in comparison with the form of other regions in Nagano Prefecture. Annual production of each organ estimated are shown in Table 2. The values of the annual production and production rate (annual production of each organ/leaf biomass) were extremely low and half of the products was apportioned to the photosynthesis organ of the trees.
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