长白落叶松人工林林分模型的应用  

Application of Stand Models of Larix olgensis Plantations

作　　者：魏占才[1] 

机构地区：[1]黑龙江林业职业技术学院,牡丹江157011

出　　处：《东北林业大学学报》2006年第4期31-33,共3页Journal of Northeast Forestry University

摘　　要：根据在牡丹江地区所调查的16块固定标准地和16块临时标准地的材料以及树干解析数据资料,基于Korf-A型理论生长方程,从林分密度理论和动态林分生长与收获等角度对长白落叶松(LarixolgensisHenry)人工林林分生长和收获模型及应用进行了研究。采用参数化的方法将立地密度因子引入Korf-A型方程,建立了林分断面积生长模型,其渐近参数主要受立地条件影响,而曲线形状参数和生长速率参数则与林分密度和立地条件均有关。以落叶松人工林林分断面积生长模型为核心的全林分模型系统,由满足相容性原则的6个模型所组成:①立地指数曲线;②林分最大密度线;③林分密度(SDI)动态预估模型;④树高曲线动态预估模型;⑤林分断面积生长模型;⑥Schumacher式林分收获模型。采用该模型系统可以模拟不同立地条件(SI及N0)下的林分平均胸径(DBH),平均树高(H),每公顷株数(N),林分断面积(G)和林分蓄积量(M)的生长过程。所建立的林分密度动态模型,预估模型及林分生长和收获模型,可以从单木和林分两个决策水平上模拟落叶松人工林林分动态发育过程,为进一步建立林分经营模型及合理经营长白落叶松人工林提供了良好基础。The growth and yield models of Larix olgensis Henry plantations and their applications were studied in terms of stand density theory and dynamic growth and yield of stands based on Korf-A theoretical growth equation using data from 16 temporary plots and 16 permanent plots in Mudanjiang area. A stand basal area growth model was derived by introducing site indexes and stand density indexes to Korf-A equation. In the model, the asymptotic parameter is mainly affected by site conditions, while curve shape parameter and growth rate parameter are related to both stand density and site conditions. The whole model system for larch plantations was set up, which is composed of 6 compatible models, namely, site index model, maximum density line model, prediction model for stand density index, prediction model of height-diameter curve, stand basal area growth model, Schumacher＇s stand yield model. The development process of mean diameter at breast height, mean height, the number of surviving trees per hectare, stand basal area, and stand volume under various conditions of initial densities and sites can be simulated by this model system. Stand density index prediction model, effective crown structure and dynamic prediction model as well as stand growth and yield model were established, which can be used to simulate stand dynamic development process in the two decision-making levels of individual tree and stand.

关 键 词：长白落叶松 林分动态 模拟 林分收获模型 林分生长模型 

分 类 号：S791.22[农业科学—林木遗传育种]