Abstract
This study was conducted to understand the biomass and the energy content of 24-year-old Pinus koraiensis stand planted in Mt. Wolak, Chungcheongbuk-do, Korea. Nine sample trees were selected and harvested for the study. Stem, bark, branches and leaves were weighed respectively with the stratified clipping method, and analyzed for productive structure. The allometric regression equations between dry weight of each component and $D^2H$ were obtained to estimate the total biomass of aboveground (47.0 ton/ha) and other parts (56.5% from stemwood, 9.1% from stembark, 0.5% from current twigs, 18.4% from live branches, 2.6% from current leaves, and 12.9% from previous leaves). Annual net production of aboveground was 6.0 ton/ha/yr, and the ratios of stemwood, stembark, current twigs, live branches, and current leaves to that of aboveground were 49.8%, 7.3%, 3.5%, 18.6%, and 20.8%, respectively. Energy content of aboveground was 1,028 GJ/ha, and annual energy content was 133 GJ/ha/yr. Leaf area index (LAI) of P. koraiensis plantation was 20.2 in Mt. Wolak.
충북 월악산 북동 사면 지역(해발 380 m)에서 24년생 잣나무 인공림의 바이오매스와 에너지량을 조사한 결과, 잣나무림의 바이오매스는 줄기부 26.6 ton/ha, 수피부 4.3 ton/ha, 1년생 가지 0.2 ton/ha, 가지부 8.6 ton/ha, 고사지 1.5 ton/ha, 당년생 잎 1.3 ton/ha, 전년생 잎 6.1 ton/ha로서 고사지를 제외한 지상부 전체는 47.0 ton/ha으로 나타났다. 또한 연간 순생산량은 줄기부 3.0 ton/ha/yr, 수피부 0.4 ton/ha/yr, 1년생 가지 0.2 ton/ha/yr, 가지부 1.1 ton/ha/yr, 당년생 잎 1.3 ton/ha/yr이며, 지상부 합계는 6.0 ton/ha/yr로 추정되었다. 이것을 열 에너지량으로 환산하면 지상부 전체의 에너지량은 1,028 GJ/ha, 연간 에너지 고정량(지상부)은 133 GJ/ha/yr로 나타났다. 한편, 잣나무림의 엽면적 지수는 20.2로 나타났다.