不同间伐强度杉木套种闽楠生长效果研究  

Study on the Growth Effect of Phoebe Boumei Interplanting Cunninghamia lanceolata With Different Thinning Intensities

作　　者：杨国厂 Yang Guochang(Yangkou State-Owned Forest Farm of Fujian Province,Nanping,Fujian 353200,China)

机构地区：[1]福建省洋口国有林场,福建南平353200

出　　处：《绿色科技》2023年第19期142-146,共5页Journal of Green Science and Technology

摘　　要：以福建省洋口国有林场24年生杉木近熟林不同间伐强度保留密度(525、675、825株/hm^(2))林冠下套种闽楠(975、825、675株/hm^(2))为研究对象,测定了其12年后林分生长效果,结果表明:随着杉木林分密度增加,杉木树高、胸径、单株立木材积和闽楠树高、冠幅、胸径、单株立木材积减少;杉木树高、胸径、单株立木材积差异均达到极显著水平;闽楠树高差异不显著,冠幅差异显著,胸径和单株立木材积差异极显著。杉木间伐保留525株/hm^(2)林冠下套种闽楠1050株/hm^(2)林分生长最优,总蓄积量491.51 m^(3)/hm^(2),36年生杉木胸径、树高、单株立木材积平均值分别为33.72 cm、23.86 m、0.9511 m^(3),比不间伐套种增加26.01%、17.36%、75.09%;13年生闽楠平均胸径9.06 cm、平均树高8.46 m。With the retention density(525,675,825 trees/hm^(2))of 24-year-old Cunninghamia lanceolata near mature forest in Yangkou State-Owned Forest Farm of Fujian Province as the research object,the forest growth effect of Phoebe Boumei(975,825 and 675 trees/hm^(2))interplanted under the canopy after 12 years was measured.The results showed that with the increase of Cunninghamia lanceolata stand density,the tree height,DBH,tree volume per tree of Cunninghamia lanceolata and the tree height,crown width,DBH,tree volume per tree of P.Boumei decreased.The difference of height,DBH and individual tree volume of Cunninghamia lanceolata reached a very significant level.There was no significant difference in tree height,significant difference in crown width,seriously significant difference in DBH and individual tree volume.The optimum stand growth of 525 fir trees/hm^(2) were retained and 1050 P.Boumei trees/hm^(2) were interplanted under the canopy.The total stock volume was 491.51m^(3)/hm^(2).The average DBH,tree height and individual tree volume of 36-year-old fir trees were 23.86m,33.72cm and 0.9511m^(3),respectively,increased to 26.01%,17.36% and 75.09% compared with non-thinning intercropping;The average DBH and height of 13-year-old P.Boumei were 9.06cm and 8.46m.

关 键 词：杉木 闽楠 林分密度 生长效果 

分 类 号：S792[农业科学—林木遗传育种]