Characteristics of the seasonal diameter growth of twenty-five species of deciduous broad-leaved trees

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  • 落葉広葉樹25種の肥大生長の季節性に関する樹種特性
  • ラクヨウ コウヨウジュ 25シュ ノ ヒダイ セイチョウ ノ キセツセイ ニ

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Abstract

LIMING's band dendrometers were installed on tree trunks of 25 species of deciduous broadleaved trees on a permanent plot in Shokawa district, Gifu Prefecture, Japan. Seasonal diameter-growth patterns in 1985 of the tree species were compared with each other. The growth patterns of 19 species well fitted a simple logistic curve. In the other six species, the growth increments fluctuated greatly because of the small sizes of the trees. From the parameters of each curve, the time of growth initiation, the maximum growth, and the growth cessation were estimated. Initiation of diameter-growth was the earliest, April 16 for Phellodendron amurense RUPR. The latest was June 7 for Corpus controversa HEMSL. Growth initiation of the ring-porous trees was earlier than that of the diffuse-porous trees. In most tree species, the maximum growth was attained in late June or July, corresponding to the rainy season. The growth period was the shortest, 81 days for C.controversa, and the longest was 171 days for Castanea crenata S. and Z. Two types of diameter-growth patterns were recognized, a long growth period with a small growth rate, and a short growth period with a large growth rate.

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