針広混交林におけるエゾマツ・シナノキ・イタヤカエデ樹冠下のトドマツの成長過程

概要

論文の詳細を見る
The height growth process of Abies sachalinensis MAST. under Picea jezoensis CARR., Tilia japonica SIMONK., and Acer mono MAXIM. in a mixed coniferous-broadleaved forest in Hokkaido was surveyed and simulated using a simple model. The model describes this process as the growth response of A. sachalinensis to light conditions under the crowns of other species, which change with the crown development of a stand. The results of the simulation well-agree with the actual process in a stand whose early stages are first, the period before the upper story trees' heights reach 7〜10 m and A. sachalinensis under their crowns cannot begin to grow because of the lack of light due to its low crown height, and second, when among the three species of the upper story, A. sachalinensis can grow most rapidly under the T. japonica crowns owing to the best light conditions enhanced mainly by the fast ascent of its own crown height. Some of the canopy-undergrowth relationships can be explained by similar processes described here.
1989-07-01