期刊论文

Growth model for individual tree of secondary Pinus massoniana forest in Hunan province based on mixed effect

中文

中南林业科技大学学报

1673-923X

2021

41

1

100-108

10.14067/j.cnki.1673-923x.2021.01.010

湖南省自然科学基金项目（2019JJ40199）；

本校为其他机构

【目的】建立湖南省马尾松次生林单木断面积与材积生长模型,为林木的生长预估提供理论依据。 【方法】以湖南省2014年一类清查样地中的20块马尾松次生林为研究对象,选取5个具有生物学意义的生长方程,建立马尾松断面积和材积随年龄变化的基础模型,在此基础上,加入以样地为随机效应的随机参数,构建基于混合效应的湖南马尾松次生林单木断面积和材积生长模型。【结果】断面积生长最优基础模型为Logistic方程,其确定系数(R~2=0.746)和预测精度(P=98.13%)最大,残差平方和(SSE=0.025)最小;材积生长最优基础模型为Richards方程,其R~2为0.703,预测精度为97.20%,SSE为1.034;混合效应模型模拟结果显示,断面...

【Objective】Establishing growth model of individual basal area and volume of Pinus massoniana secondary forest in Hunan province, to provide theoretical basis for its forest growth prediction.【Method】20 sample plots of Pinus massoniana in the national forest inventory in Hunan province in 2014 were selected as the research objects. Five growth equations with biological significance were selected to establish the basic model of basal area and volume of Pinus massoniana varying with age. Random parameters with sample plots effect were added to...