抚育间伐强度对杉木林生长的影响  

Effect of Thinning Intensity on the Growth of Cunninghamia lanceolata(Lamb.) Hook forests

作　　者：岑思 Cen Si(Nanning Jiayang Forestry Planning and Design Co.,Ltd,Nanning 530029,Guangxi,China)

机构地区：[1]南宁嘉阳林业规划设计有限公司,广西南宁530029

出　　处：《绿色科技》2024年第3期173-176,共4页Journal of Green Science and Technology

摘　　要：为探究不同间伐强度对杉木林生长的影响,以广西桂北地区为研究地点,以杉木的树高、胸径、材积和生物量为研究对象,考察不同间伐强度下杉木林树高、胸径、材积和生物量的生长情况。结果表明:20%、30%、40%3个间伐强度均对杉木树高、胸径、材积和生物量的增长有显著影响,30%间伐强度下杉木树高、胸径、材积和生物量的增长最明显,树高、胸径和材积较抚育前分别提高了6.50%、11.84%、23.34%,根部、叶部、枝部和整株的生物量较抚育前分别提高了19.53%、17.82%、16.54%、27.69%。指出了杉木林间伐抚育过程中,选择30%的间伐强度有利于杉木林的生长。本研究为杉木林的科学间伐抚育提供了理论依据。In order to explore the impact of different thinning intensities on the growth of Cunninghamia lanceolata(Lamb.)Hook forests,this paper takes the northern Guangxi region as the research site,and takes the tree height,diameter at breast height,volume,and biomass of Cunninghamia lanceolata(Lamb.)Hook trees as the research objects,to investigate the growth of Cunninghamia lanceolata(Lamb.)Hook forests under different thinning intensities.The results showed that three thinning intensities,20%,30%,and 40%,all had a significant impact on the growth of height,diameter at breast height,volume,and biomass of Cunninghamia lanceolata(Lamb.)Hook trees.Under 30%thinning intensity,the growth of height,diameter at breast height,volume,and biomass of Cunninghamia lanceolata(Lamb.)Hook trees was most significant,with tree height,diameter at breast height,and volume increasing by 6.50%,11.84%,and 23.34%respectively compared to before tending.The biomass of roots,leaves,branches,and whole plants increased by 19.53%,17.82%,16.54%,and 27.69%respectively compared to before tending.Conclusion:Choosing a 30%thinning intensity is beneficial for the growth of Cunninghamia lanceolata(Lamb.)Hook forests during the thinning and nurturing process.This study provides a theoretical basis for scientific thinning and nurturing of Cunninghamia lanceolata(Lamb.)Hook forests.

关 键 词：杉木林 间伐强度 生长状况 生物量 

分 类 号：S664[农业科学—果树学]