不同间伐强度对福建柏人工林生长的影响  

Effects of Different Thinning Intensity on the Growth of Fokienia Hodginsii Plantation

作　　者：陈来强 Chen Laiqiang(National Forest Farm of Datian Meiling,Datian,Fujian 366102,China)

机构地区：[1]福建省大田梅林国有林场,福建大田366102

出　　处：《绿色科技》2023年第21期157-160,167,共5页Journal of Green Science and Technology

基　　金：中央财政林业科技推广示范项目(编号:2018TG03)。

摘　　要：探究不同间伐强度对福建柏人工林生长的影响,为福建柏人工林合理间伐措施提供参考。以福建省大田梅林国有林场福建柏人工林为研究对象,分析4种不同间伐强度下2年后林木树高、胸径、材积的生长变化,并通过方差分析和多重比较进行综合比较。结果表明:间伐2年后与刚间伐后比较林分的平均树高、胸径及单株立木材积分别增加了15.7%、8.5%、35%;各处理在间伐2年后的胸径、单株立木材积增长量均值均表现为处理2>处理1>处理3>处理4,其中处理2的胸径及材积增长分别达到了1.23 cm、0.01736 m^(3)。除树高增长量外,各处理间的胸径和材积增长量均表现为极显著差异。指出了保留密度为1680株/hm^(2)间伐处理对林分生长的促进效果最明显,其次为保留密度1350株/hm^(2)间伐处理,保留密度1950、2250株/hm^(2)间伐处理对林分生长的促进效果最不明显。To explore the effects of different thinning intensities on the growth of Fokienia Hodginsii plantation,and to provide scientific basis for reasonable thinning measures of F.Hodginsii plantation.Taking the F.Hodginsii plantation of Datian Meilin State-Owned Forest Farm as the research object,this paper analyzes the growth changes of tree height,DBH and volume after 2a under 4 different thinning intensities,and conducts comprehensive comparisons through analysis of variance and multiple comparisons.After thinning for 2 years,the average height,diameter at breast height and single stand timber volume of the stand increased by 15.7%,8.5%and 35%respectively compared with that after thinning.After thinning for two years,the average increase of DBH and single tree volume of each group was shown as group 2>group 1>group 3>group 4,in which the increase of DBH and volume of group 2 reached 1.23cm and 0.01736 m^(3)respectively.Except for the increase in tree height,there were extremely significant differences in the growth of DBH and volume among different treatments.Thinning treatment with a retention density of 1680 trees/hm^(2)had the most obvious promoting effect on stand growth,followed by thinning treatment with a retention density of 1350 trees/hm^(2),and thinning treatment with a retention density of 1950 trees/hm^(2)and 2250 trees/hm^(2)had the least significant promoting effect on stand growth.

关 键 词：福建柏 间伐强度 林分生长 

分 类 号：S791.430.6[农业科学—林木遗传育种]