本研究以东北地区红松人工林为研究对象，基于树干解析、枝条解析和节子剖析数据，分析不同林分条件（年龄和林分密度）下不同大小林木的枝条（节子）属性因子特征、生长发育及心材在树干上的分布规律，获取枝条大小及动态变化数据，代替固定观测数据，重建枝条整个发育阶段的动态变化过程，采用理论生长方程与多水平（林分—林木—枝条）混合模型相结合方法，建立枝条属性、枝条生长动态预测模型；分析枝条属性对树干上节子和心材形成的影响，构建节子和心材分布及大小预测模型，模拟不同经营措施（整枝、抚育间伐）对节子及心材的影响，控制节子大小和心材比例，为全面提高人工林生产力和林分质量提供科学依据。

This study regards Korean pine (Pinus koraiensis.) in the plantations of the Northeast, P.R. China as the research object. Based on stem, branch and knot analysis data, the attribute ，dynamic development of branch or knot，distribution of heartwood for different stand conditions (i.e., stand age and stand density) and tree sizes are analyzed. The branch size and dynamic data were obtained instead of fixed observation data to reconstruct the dynamic process of whole branch growth phase. The static models of branch attributes, branch growth dynamic are developed by combining the theoretical growth functions with multi-level mixed effects models with parameter random effect of stand, tree and branch simultaneous. The effects of branch attribute on formation of knot and heartwood were analyzed, and the distribution and size prediction models of knot and heartwood were developed. The models are used to simulate the effect of management measures (i.e., manual pruning and thinning) on knot and heartwood to control the knot size and ratio of heartwood. This research will provide scientific basis for comprehensively improving plantation productivity and the stand stocking volume per hectare.