CAJ | 학술논문

通过建立茎干离地22 cm的直径（ D22）与单枝地上生物量的关系，估算林分地上生物量，并对三倍体毛白杨B301和欧美杨107在3种栽植密度下林分地上生物量及收获物质量进行早期测算。结果表明：三倍体毛白杨B301林分各栽植密度的单枝地上生物量和单枝树皮地上生物量差异均不显著；欧美杨107在20000株／hm2栽植密度下，单枝地上生物量和单枝树皮地上生物量均显著小于栽植密度为5000株／hm2；2种杨树林分地上生物量和林分树皮地上生物量均随着栽植密度的增大而增大，且各栽植密度间的差异达到了极显著水平。
통과건립경간리지22 cm적직경（ D22）여단지지상생물량적관계，고산림분지상생물량，병대삼배체모백양B301화구미양107재3충재식밀도하림분지상생물량급수획물질량진행조기측산。결과표명：삼배체모백양B301림분각재식밀도적단지지상생물량화단지수피지상생물량차이균불현저；구미양107재20000주／hm2재식밀도하，단지지상생물량화단지수피지상생물량균현저소우재식밀도위5000주／hm2；2충양수림분지상생물량화림분수피지상생물량균수착재식밀도적증대이증대，차각재식밀도간적차이체도료겁현저수평。
In order to estimate the quality of biomass before harvesting, an allometric regression of bark percentage of total aboveground biomass and D22( diameter at 22 cm height) was developed in two poplar short-rotation coppice systems.There was no significant difference in shoot biomass and bark biomass of triploid Populus tometnos a B301 ( ( P.tomentosa ×P. bolleana) ×P.tomentosa) plantation, however, the shoot biomass and bark biomass of Populus×euramericana cv.‘74/76’ plantation in the density of 5 000 plants/hm2 were significantly higher than those in 20 000 plants/hm2 .Both triploid Popu-lus tomentosa B301 and Populus×euramericana cv.‘74/76’ showed significant difference in biomass and bark content be-tween different densities.