不同经营模式对杉木人工林生长量和生物量的影响  

The effect of different management models on the growth and biomass of Cunninghamia lanceolata plantation

作　　者：江廷均 JIANG Tingjun(Fujian yangkou state owned forest farm,Nanping 353221,Fujian,China)

机构地区：[1]福建省洋口国有林场,福建南平353221

出　　处：《福建林业》2023年第3期45-48,共4页Fujian Forestry

摘　　要：以福建省洋口国有林场30a林龄杉木人工林择伐(Z)、择伐套种闽楠(ZT)和对照(CK) 3种不同经营模式为研究对象,测定其10a后林分生长量和生态系统生物量。结果表明:择伐能够提高杉木树高、胸径生长量,林下套种闽楠能够促进杉木林分生长,增加生态系统生物量。各处理杉木平均树高、平均胸径和平均单株立木材积均表现为ZT>Z>CK,其中ZT处理的杉木平均胸径和平均单株立木材积显著高于CK (P<0.05)。不同经营模式的杉木林分各器官生物量均表现为干>根>叶>枝,各器官总生物量表现为CK>ZT>Z。生态系统乔木层生物量、凋落物层生物量和总生物量均表现为ZT>CK>Z;林下植被层生物量表现为CK>Z>ZT。ZT处理的40a林龄杉木与11a林龄闽楠异龄复层混交林的杉木平均胸径27.76 cm、平均单株立木材积0.6997 m^(3)、林分总蓄积量391.12 m^(3)·hm^(-2)、生态系统总生物量125.40 t·hm^(-2),分别比CK增加16.15%、38.94%、7.87%、9.30%。The stand growth and ecosystem biomass of three different management models including selective logging(Z),selective logging intercropping of Phoebe bournei(ZT),and control(CK),which used to 30 years old Cunninghamia lanceolata artificial forest built in Fujian Yangkou state owned Forest Farm,were measured.The results were as followes:The selective logging could improve the growth of Height and DBH of artificial forest,and the intercropping P.bournei under the forest can promote the growth and ecosystem biomass.The average of Height,DBH and Volume of artificial forest in each treatment showed ZT>Z>CK,among which the average of DBH and Volume of artificial forest in ZT treatment were significantly higher than CK(P<0.05).The biomass of each organ in different management models of C.lanceolata stands is characterized by stem>root>leaf>branch,and the total biomass of each organ is characterized by CK>ZT>Z.The biomass of the tree layer,litter layer,and total biomass in the ecosystem are all shown as ZT>CK>Z.The biomass of the understory vegetation layer shows CK>Z>ZT.The average of DBHof artificial forest in the 40 year old C.lanceolata forest treated with ZT and the 11 year old P.bournei mixed layer forest with different ages were 27.76 cm,the average of Volume per tree was 0.6997 m^(3),the total stand volume was 391.12 m^(3)·hm^(-2),and the total ecosystem biomass was 125.40 t·hm^(-2),which increased by 16.15%,38.94%,7.87%,and 9.30%respectively compared to CK.

关 键 词：杉木人工林 择伐 套种 闽楠 生长量 生物量 

分 类 号：S752.2[农业科学—森林经理学]