期刊论文

Basal area growth model of Oak secondary forest in Hunan province

中文

中南林业科技大学学报

1673-923X

2021

41

8

84-91

10.14067/j.cnki.1673-923x.2021.08.010

国家林业公益性行业科研专项“闽楠、青冈栎次生林提质增量关键技术研究与示范”（201504301）；

本校为第一机构

【目的】构建湖南栎类次生林林分断面积生长模型,为其经营措施和生长收获预估提供理论依据。【方法】以湖南省6期国家连续清查数据(1989—2014年)中以栎类为优势树种或主要树种的样地为研究对象。选用7种常用的生长理论方程,以林分断面积为因变量,年龄为自变量构建基础模型。通过评价指标选出最优基础模型,构建含有地位指数、林分年龄和林分株数的混合效应模型(林分株数为随机变量)和参数化模型(林分株数为连续变量),比较基础模型、混合效应模型和参数化模型拟合效果的差异。【结果】3种模型的预估精度由高到低为:参数化模型(98.36%)、混合效应模型(97.71%)、基础模型(92.84%),最终将参数化模型...

【Objective】In order to provide theoretical basis for management measures and growth harvest estimation, a stand basal area growth model was established for the secondary Oak forest in Hunan province.【Method】The sample plots with Oak secondary forest of the dominant tree species or main tree species in the six periods of national continuous inventory data (1989-2014) in Hunan were taken as the objects. Seven kinds of common growth theory equations were used to construct the basic model with the dependent variety (Stand basal area) and indepe...