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島根大学農学部研究報告 18 巻
1984-12-20 発行
三瓶演習林内の落葉広葉樹林における物質循環に関する研究(12) : 斜面位置による地上部現存量の相違
Studies on Mineral Cycling in a Deciduous Broad-leaved Forest at Sanbe Forest of Shimane University(XII) : Difference of Above Ground Biomass in a Deciduous Broad-leaved Forest along a Slope
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Above ground biomass of a deciduous broad-leaved forest at Sanbe Forest of Shimane University were estimated by allometric method using logarithmic regressions of individual tree component biomass on D^2H.
1. The age of sample trees were from 32 to 39 years and 36 or 37 year-old trees were most.
2. The relationship between D and H which were actually measured was shown in the following equation.
1/H＝0.65698/D＋0.02296
3. The relation between weight of stem and D^2H was shownin one equation regard less of the difference in tree species. Relations between weight of other component and D^2H were shown in four equations.
4. Above ground biomass in a deciduous broad-leaved forest were estimated by above nine equations. The dry weight of stem, branch and leaf were 67-189, 10.8-24.8, 1.7-3.8ton/ha, respectively. These weight increased with the increase of stand density.
1. The age of sample trees were from 32 to 39 years and 36 or 37 year-old trees were most.
2. The relationship between D and H which were actually measured was shown in the following equation.
1/H＝0.65698/D＋0.02296
3. The relation between weight of stem and D^2H was shownin one equation regard less of the difference in tree species. Relations between weight of other component and D^2H were shown in four equations.
4. Above ground biomass in a deciduous broad-leaved forest were estimated by above nine equations. The dry weight of stem, branch and leaf were 67-189, 10.8-24.8, 1.7-3.8ton/ha, respectively. These weight increased with the increase of stand density.
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