CAJ | 학술논문

对分布于贵州省织金县茶店乡的光皮桦次生林地上部分生物量进行了测定。结果表明，光皮桦次生林单株及各构件生物量随林木胸径、树高的增大而增加，不同径阶林木单株及各构件生物量之间的差异很大。各构件生物量的分配规律为树干〉树枝〉树叶，其中树干生物量所占比例最大，平均达76％以上。光皮桦次生林单株及各构件生物量（形）与胸径平方与树高乘积（D2H）之间的关系，可采用幂函数模型W=a（D2H）b进行模拟。本文所拟合的4个回归模型精度均很高，可用于调查地区光皮桦次生林地上部分生物量的预测。
대분포우귀주성직금현다점향적광피화차생임지상부분생물량진행료측정。결과표명，광피화차생림단주급각구건생물량수림목흉경、수고적증대이증가，불동경계림목단주급각구건생물량지간적차이흔대。각구건생물량적분배규률위수간〉수지〉수협，기중수간생물량소점비례최대，평균체76％이상。광피화차생림단주급각구건생물량（형）여흉경평방여수고승적（D2H）지간적관계，가채용멱함수모형W=a（D2H）b진행모의。본문소의합적4개회귀모형정도균흔고，가용우조사지구광피화차생임지상부분생물량적예측。
Aboveground biomasses of secondary Betula luminifera forest located on Chadian Township of Zhijin Cou- nty in Guizhou Province were surveyed. The result showed that the biomasses of individual tree and different components of the secondary forest extended following increase of breast - height diameter and height of trees. The difference among bionumses of individual tree and different components for trees of different diameters was very significant. The distribution pattern of different components biomasses was stem 〉 branches 〉 leaves. Proportion of stem biomass was the highest, and the mean proportion reached more than 76 %. Relation between the biomasses of individual tree and different components of the secondary forest （W） and product of breast - height diameter square and height （ D2 H） could be fitted using pow- er function model W = a （ D2 H）b. Accuracies of four regression models fitted in this paper were all high, could be used to predict aboveground biomasses of secondary Betula luminifera forest in surveyed area.