日本生態学会誌
Online ISSN : 2424-127X
Print ISSN : 0021-5007
ISSN-L : 0021-5007
立地条件の異なる83年生スギ人工林の技および葉現存量
丹下 健鈴木 誠鈴木 保
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ジャーナル フリー

1990 年 40 巻 3 号 p. 179-186

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A study was made of branch and leaf biomass in an 83-year-old man-made Cryptomeria japonica stand in the Tokyo University Forest in Chiba. In the study area, four plots with different topographical conditions were established, i.e., R-1 on steep ridge, R-2 on flat ridge, M on mid-slope, and B on bottom. Branch and leaf biomass were estimated by dimension analysis. Leaf biomass was estimated at 28 in R-1,26 in R-2,17 in M, and 13 t/ha in B. Plots with high tree density had tended to give large leaf biomass. Branch biomass was estimated at 40 in R-1,14 in R-2,25 in M, and 28 t/ha in B. Except in R-2,branch biomass exceeded leaf biomass by a factor of two or more, especially in B. In old stands, the very long life span of branches seems one reason for the apparently large branch biomass when compared with younger stands.

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© 1990 一般社団法人 日本生態学会
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