北京林业大学学报2016，Vol.38Issue(10)：7-14,8.DOI:10.13332/j.1000--1522.20150359
塞罕坝主要立地类型针阔混交林树高曲线构建
Height curve construction of needle and broadleaved mixed forest under main site types in Saihanba, Hebei of northern China
摘要
Abstract
Site index model is the most effective and usable method in evaluating potential productivity of forest. However, in the mixed forest with multiple tree species, multiple levels and complex stand structure, it is a scientific problem to be solved urgently that building dynamic position index model and evaluating the site productivity under different site conditions. In this paper, data from stem analysis of 348 dominant trees (174 Larix principis-rupprechtii trees and 174 Betula platyphylla trees) were used to evaluate dynamic base-age invariant site index models developed from Bertalanfy-Richards model, Hossfeld model, and Lundqvist-Korf model with the generalized algebraic difference approach ( GADA) for broadleaved mixed forests in the warm temperate zone of northern China. Five dynamic site index models were created to evaluate site quality and site index conversion equations were established in different site types of mixed forest by geometric linear regression. The results showed that the optimal model for L. principis-rupprechtii was based on Bertalanfy-Richards model, and its evaluating values were R2adj 0. 948, Bias 0. 088, RMSE 1. 089; the optimal model for B. platyphylla was based on Lundqvist-Korf model and its evaluating values were R2adj 0. 966, Bias 0. 066, RMSE 1. 322. In different site types, <br> the correlation coefficients between the site index of L. principis-rupprechtii and B. platyphylla were 0. 87 , 0. 81 , 0. 84 and 0. 91 . Validation procedure showed that conversion equations were suitable for the studied mixed stands. The conversion equations can be applied in mixed species stands with inconsistent stratification or in stand conversion situations for an accurate and reliable evaluation of forest quality.关键词
广义代数差分算法/转换方程/地位指数/华北落叶松/白桦/混交林Key words
generalized algebraic difference approach/conversion equation/site index/Larix principis-rupprechtii/Betula platyphylla/mixed forest分类
农业科技引用本文复制引用
王冬至,张冬燕,王方,张志东,黄选瑞..塞罕坝主要立地类型针阔混交林树高曲线构建[J].北京林业大学学报,2016,38(10):7-14,8.基金项目
林业公益性行业科研专项(20150430304)、国家自然科学基金项目(31370636)、“十二五”国家科技支撑计划项目(2012BAD22B0304)。 （20150430304）
