闽北马尾松人工林密度及立地效应

Studies on the Stand Density and Site Effect of Pinus massoniana Plantation in Northern Fujian

以闽北地区 80块马尾松人工林标准地资料为基础 ,研究林分蓄积与林分密度和优势木平均高的关系 .建立了林分蓄积与林分密度及优势木平均高的收获模型 M=a1Hb1 Nα- a2 Hb2 Nβ,通过生产弹性、边际产量分析 ,研究了密度效应及优势高效应 ,并根据立地及密度效应模型研究了林分密度、林龄。

Based on the data of 80 sample plots in northern Fujian,the relationship between stand volume,stand density and stand dominant height of Pinus massoniana plantation was studied.A volume model for stand volume,stand density and average stand dominant height was established,i.e.M=a 1H b 1 N α-a 2H b 2 N β,then the productive elasticity and marginal yield of density and dominant height were analyzed.In addition, based on the effect model of the stand site and density,the stand volume effected by stand density,stand age and site index were also studied.