杉木分布区中带不同发育阶段人工林生物量估测模型

在收集杉木分布区中带不同发育阶段杉木人工林生物量资料基础上,选择10种不同的生物量估测模型,对杉木幼龄林、中龄林、近熟林和成熟林各器官（地上部分、叶、枝、皮、干、根）生物量与主要测树因子进行拟合,筛选不同发育阶段杉木不同器官生物量估测模型.结果表明：拟合效果最好的为幂函数模型,其次为指数函数模型,再次为多项式模型;共筛选出估算杉木幼龄林、中龄林、近熟林和成熟林各器官和总生物量的最优模型42个（包括36个不同器官生物量模型、6个全株生物量模型）;从杉木各器官生物量的拟合效果看,拟合度最高的模型均是以胸径和树高为自变量的模型.这些模型为分布区中带不同发育阶段杉木人工林生物量的确定和碳储量评价提供科学依据.

The Estimation Model for the Biomass of Chinese fir Plantation in the Central Zone of Distribution Area at Different Development Stages

In this paper,we choose 10 widely used biomass-estimation models to fit the models regarding the biomass and main tree measurement factors among various Chinesefir plantation at different development stages （sapling forest,mid-maturation forest,nearly ripe forest,and mature forest） and component （ground part,leaf,branch,dry skin,and the root）.The objective is to obtain the best fitting model for the biomass estimation of Chinese fir.The results show that the power function model has the best goodness-of-fit followed by exponential function model,and the goodness-of-fit of the polynomial model is relatively low.In total,42 best models including 36 organ models and 6 whole plant models are selected for estimating the biomass of the total and single organ of Chinesefir at different development stages such as sapling forest,mid-maturation forest,nearly ripe forest,and mature forest.According to the goodness-of-fit of the model of various organs,the highest fitting models arc those with diameter and height as independent variables.These models provided scientific basis for the biomass measurement of Chinese fir plantation at different development stages in central zone of distribution area.