尾巨桉与千年桐复层异龄混交林生长效果分析  

Analysis on the growth effect of Eucalyptus urophylla × E. grandis mixed with Vernicia montana at different age in multiple layers

作　　者：柯文生 Ke Wensheng(Fujian Provincial Jiulongling National Forestry Farm,Longhai,Fujian 36112,China)

机构地区：[1]福建省龙海九龙岭国有林场,福建龙海363112

出　　处：《福建林业》2019年第6期42-44,共3页Fujian Forestry

摘　　要：在9a生经间伐后保留不同株数的桉树林分内套种千年桐,对套种后7年的混交林及桉树纯林的生长效果进行调查分析,结果表明,选择伐后桉树保留密度450株·hm-2左右(按株数强度间伐)、郁闭度<0.6的林分内套种千年桐(套种密度为945株·hm-2)能形成良好的复层异龄混交林,明显提高了林分生产力,套种7a后,混交林中尾巨桉平均胸径、平均树高、单株材积和林分总蓄积量(含千年桐)分别较桉树纯林增加11.50%、28.89%、17.10%和52.42%。Vernicia montana was interplanted in the 9-year-old thinned Eucalyptus urophylla ×E. grandis forests with different densities. 7 years after the interplanting, the mixed forest and pure forest of E. urophylla × E. grandis were investigated, and the results showed that the good multi-layer mixed forests formed by interplanting A. montana(the density of945 plants per hectare) in the E. urophylla × E. grandis forests with the density of 450 plants per hectare(strong thinning intensity) and canopy density < 0.6 after thinning, and the forest productivity were increased obviously. After interplanting for 7 years, the average DBH, average tree height, individual volume and total stand volume of E. urophylla × E. grandis in the mixed forest increased by 11.50%, 28.89%, 17.10% and 52.42%, respectively, compared with that of E. urophylla ×E. grandis pure forest.

关 键 词：复层异龄林 尾巨桉 千年桐 套种效果 

分 类 号：S792.39[农业科学—林木遗传育种]