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当前位置: 首页 > 文章 > 密度控制对闽南山地巨尾桉大径材林分生长的影响研究 桉树科技 2018 (3) 20-24
Position: Home > Articles > Study on the Effect of Eucalyptus grandis × E. urophylla Large-diameter Timber Growth in South Fujian Hilly Land by Density Controlling Eucalypt Science & Technology 2018 (3) 20-24

密度控制对闽南山地巨尾桉大径材林分生长的影响研究

作  者：
张荣标;申巍;吴庆全;王添山;张金文;林滨滨
关键词：
密度控制;间伐;巨尾桉;大径材;生长
摘  要：
通过间伐控制保存密度,保留345、495、645株·hm~(-2)以及不间伐的对照组945株·hm~(-2),研究密度控制对闽南山地巨尾桉大径材生长的影响。结果表明:间伐处理对胸径、树高、大径材出材率,林分中大径材比率、平均单株材积的提高有显著或极显著影响,保留株数越低,其相关指标越高,保留345株·hm~(-2)均为最高值;单位面积蓄积量、出材量以及经济效益方面以345株·hm~(-2)的林分最低。间伐强度增大有利于大径材培育,但密度设置应在合理范围内,综合生长量、出材量以及经济效益的方面考虑,保留645株·hm~(-2)优于其他处理。
译  名：
Study on the Effect of Eucalyptus grandis × E. urophylla Large-diameter Timber Growth in South Fujian Hilly Land by Density Controlling
作  者：
ZHANG Rongbiao;SHEN Wei;WU Qingquan;WANG Tianshan;ZHANG Jinwen;LIN Binbin;Tianma State-owned Forest Farm of Pinghe;Zhangzhou Institute of Forestry;Jiulongling State-owned Forest Farm of Longhai;Zhangzhou Forestry Bureau;Tianbao State-owned Forest Farm,Zhangzhou;
单  位：
ZHANG Rongbiao%SHEN Wei%WU Qingquan%WANG Tianshan%ZHANG Jinwen%LIN Binbin%Tianma State-owned Forest Farm of Pinghe%Zhangzhou Institute of Forestry%Jiulongling State-owned Forest Farm of Longhai%Zhangzhou Forestry Bureau%Tianbao State-owned Forest Farm,Zhangzhou
关键词：
density controlling;;thinning;;Eucalyptus grandis×E. urophylla;;large-diameter timber;;growth
摘  要：
Effects of four spacing densities – 345, 495, 645 or 945 trees·hm~(-2) – on the growth of Eucalyptus grandis×E. urophylla on hilly sites in south Fujian were examined in this study. Differences among densities for DBH, tree height, outturn rate, average volume of large-diameter timber and for the ‘big-diameter timber rate were highly significant. The lower the density of 345 plants·hm~(-2) yielded the highest value trees and logs but had the lowest value per unit area, lowest outturn and lowest economic benefit. Higher intensities of thinning(i.e. lower density stockings) were beneficial to production of big-diameter timber, but density must be controlled to within an optimum range, as this study found that 645 trees ·hm~(-2) was, overall, better than the other three densities.

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