基于福建将乐地区杉木标准地调查和标准木生物量数据,分析杉木各组分(树枝、树叶、树干、根系、树冠、地上)生物量占全树生物量比例随年龄的动态变化规律。为消除生物量模型的不相容性,先建立各组分生物量独立模型,再对模型进行以树干为基础,按代数和平差法,通过联立独立模型来建立相容性模型。在模型检验时发现枝条模型各指标拟合效果相对较差,故对树枝和枝条的建模选择了按比例分配的相容性模型建立方法。以模型的总相对误差Ra、平均相对误差(RMSE)、平均相对误差绝对值(ARME)、精度(P)等指标来评价相容性模型的效果。结果表明:选择合适的相容性模型,能较全面、客观地反映杉木各组分之间生物量的分配关系,实现模型估计值之间的相容性,也可在一定程度上提高杉木生物量估测精度。The biomass data of Cunninghamia lanceolata was based on the investigation of sample plots and biomass of sample trees in Jiangle District of Fujian Province. The regularity of dynamic change of the biomass proportion of each component(branch, foliage,stem,root,crown,and aboveground part of C. lanceolata)alone with age was analyzed. In order to eliminate the incompatibility of biomass model,we established biomass evaluation models for each component, and the compatible biomass models were deduced by algebraic relation among the components of single tree biomass using stem biomass as the controlled variable.After model testing we found that the branch modle had a poor performance,so we chosed the compatibility of proportional distribution model establishment method to build the model of foliage and branches. The total relative error, the average relative error, average relative error absolute value and precision were used to evaluate the efficacy of the compatibility model. Results showed that the suitable compatible biomass model reflected the distribution relationship of biomasses among various components completely and objectively,and also improved the estimation precision of biomass to some extent
