摘要
本文用临时标准地资料,借助多元回归分析技术探讨林分生长与收获模型,并建立了参数回收模型(PRM),为预估兴安落叶松(Larix gmelinii Rupr.)天然林林分结构和收获量,编制现实收获表提供新途径。一、研究资料与方法研究数据取自原内蒙古大兴安岭牙克石林管局中。
Equations for estimating diameter distribution, growth, and yield were developed based upon measurement of 230 temporary plots located in natural Dahurian larch Larix gmelinii stands throughout Daxingan mountains. First of all, equations for projecting stand density (basal area or number of trees) and stand volume from stand condition and growth model of basal area were developed using regression analysis technique. Compatible models of estimating diameter distribution—parameter recovery model (PRM) were derived by solving for the parameters of the generalized form of gamma distribution from attributes predicted with the stand-level models. A mathematical compatability exists between two yield forecasting techniques: diameter distribution models and stand-level models. A new method is presented for editing yield table.
出处
《林业科学》
EI
CAS
CSCD
北大核心
1989年第5期477-482,共6页
Scientia Silvae Sinicae
关键词
落叶松
天然林
生长
收获量
Growth and yield
Diameter distribution
The generalized form of Γ distribution
Larix gmelinii Rupr
