島根大学農学部研究報告

ダウンロード数 : ?
島根大学農学部研究報告 22
1988-12-21 発行

三瓶演習林内の落葉広葉樹林の下層植生の養分含有率について

Nutrient Concentration of Understory Species of Deciduous Broad-leaved Forests at Sanbe Forest of Shimane University
片桐 成夫
金子 信博
三宅 登
ファイル
内容記述(抄録等)
This paper deals with the nutrient concentration and amount of understory of a deciduous broad-leaved forest at Sanbe Forest of Shimane University.
1. 38 species appeared in the understory of sampling plots and the number of individuals was 27400 per hectare. Dominant species were the following seven shrubs; Lindera umbellata, Viburnum Wrightii, Viburnum erosum, Ilex crenata, Pieris japonica, Helwingia japonica, Callicarpa japonica, and Euonymus oxyphyllus.
2. The above ground weights of shrubs were related to D^2_0H or D^2H. In estimating the above ground biomass of understory, the values were 6.69ton/ha in P-1 and 3.75 ton/ha in P-2. It was 2.0-3.2% of total above ground biomass.
3. The nutrient concentrations of shrubs were fluctuated with wide range and depended upon the difference of species and the size of trees.
4. The amounts of five nutrient elements of understory were 23.2-13.7 for N, 2.35-1.37 for P, 15.9-9.7 for K, 7.3-4.3 for Mg, and 43.6-25.7 kg/ha for Ca. The percentages of nutrient amount to total nutrient amount of above ground were about 4% for N and Ca, and 6-8% for P, K and Mg. These values were larger than that of dry matter.