不同间伐强度对桉树人工林林分的影响  

Effect of Different Thinning Intensity on Eucalyptus Plantation Stands

作　　者：陈丽芳 陈继勇 Chen Lifang;Chen Jiyong(Liuwan State-Owned Forest Farms in Guangxi Zhuang Autonomous Region,Yulin,Guangxi 537000,China)

机构地区：[1]广西壮族自治区国有六万林场,广西玉林537000

出　　处：《绿色科技》2023年第5期141-144,共4页Journal of Green Science and Technology

摘　　要：为探究不同间伐强度对桉树人工林林分的具体影响和作用规律,提升桉树人工林的栽培技术和单株生产力,以广西壮族自治区国有六万林场的桉树人工林为例,对不同间伐强度对桉树人工林林分的影响进行了实测研究分析,首先阐述研究区概况、样地设置和实验方法,再根据林分因子实验数据,分析了不同抚育间伐强度对林分胸径、林分树高和林分材积的影响,结果表明:林分胸径方面,强度间伐样地的总生长量和连年生长量均为最高,分别是20.62 cm和2.67 cm,说明强度抚育间伐对抚育间伐后桉树胸径的增长效果最好,并且抚育间伐有利于促进桉树胸径平均生长量的增长;林分树高方面,强度间伐样地的总生长量和平均生长量均为最高,分别是27.84 cm和3.58 cm,说明不同间伐强度对桉树人工林林分树高的生长有促进作用,但是作用较小;林分材积方面,强度间伐样地的总生长量、连年生长量和平均生长量均为最高,分别是0.4321、0.0656和0.0636 cm,说明间伐强度的越大,桉树人工林林分单株材积总生长量越大,并且抚育间伐对于桉树林分单株材积的影响较大,研究旨在为类似桉树人工林的营林发展提供助力。In order to explore the specific effects and action rules of different thinning intensities on Eucalyptus plantation stand,and improve the cultivation techniques and productivity of Eucalyptus plantation,this paper takes the Liuwan State-Owned Eucalyptus plantation in Guangxi Zhuang Autonomous Region as an example to carry out a field study and analysis on the effects of different thinning intensities on Eucalyptus plantation stand.Firstly,the general situation of the study area,plot setting and experimental methods are described.Then,according to the experimental data of stand factors,the influences of different tending thinning intensity on stand DBH,stand height and stand volume are analyzed.The measured results showed that in terms of DBH,the total growth and annual growth of the plots with intensity thinning were the highest,which were 20.62cm and 2.67cm,respectively,indicating that intensity thinning had the best effect on the growth of DBH of Eucalyptus after tending thinning,and tending thinning was beneficial to promote the growth of average DBH of eucalyptus.In terms of stand height,the total and average growth of the plots with intensive thinning were the highest,which were 27.84cm and 3.58cm,respectively,indicating that different thinning intensities had a promotion effect on the growth of Eucalyptus plantation stand height,but the effect was small.In terms of stand volume,the total growth,continuous growth and average growth of intensive thinning sample were the highest,which were 0.4321cm,0.0656cm and 0.0636cm,respectively,indicating that the greater the intensity of thinning,the greater the total growth of Eucalyptus plantation stand per tree,and tending thinning had a greater impact on Eucalyptus stand per tree volume.The research aims to provide support for the development of plantations similar to Eucalyptus plantation.

关 键 词：间伐强度 桉树人工林 营林技术 林分影响 

分 类 号：S7[农业科学—林学]