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当前位置: 首页 > 文章 > 不同抚育间伐强度对兴安落叶松林分平均直径和树高生长的影响 西北林学院学报 2018,33 (5) 163-166+178
Position: Home > Articles > Effects of Different Tending Thinning Intensities on the Average Diameter and Height Growth of Larix gmelinii Forest Journal of Northwest Forestry University 2018,33 (5) 163-166+178

不同抚育间伐强度对兴安落叶松林分平均直径和树高生长的影响

作  者：
温晶;张秋良;韩胜利;边玉明;李嘉悦
关键词：
兴安落叶松;抚育间伐;林木生长
摘  要：
以内蒙古大兴安岭林区兴安落叶松天然次生林为研究对象,设置4种间伐强度(10%、20%、30%、40%和对照)的试验固定样地,探讨间伐强度对其影响。结果表明,兴安落叶松林经不同间伐强度间伐5a后,林分的平均胸径生长量与对照样地相比都有非常明显的增加,分别比对照样地增加0.15、0.34、0.48cm和0.63cm,40%的间伐强度对提高林分平均胸径生长量最显著;林分的平均树高比对照也有明显的增加,平均树高生长量分别比对照增加0.01、0.02、0.20m和0.25m,但4个强度之间影响差异不明显;不同间伐强度对林分蓄积增长量也存在一定影响,其中30%的间伐强度处理的样地林分蓄积量最大;此外,林分株数密度越小,林木枯死率越低。抚育间伐后保留木的生长空间和营养空间得到有效改善,林分胸径和树高生长量随间伐强度增大而增加,但不同间伐强度树高生长量和蓄积量差异不显著。
译  名：
Effects of Different Tending Thinning Intensities on the Average Diameter and Height Growth of Larix gmelinii Forest
作  者：
WEN Jing;ZHANG Qiu-liang;HAN Sheng-li;BIAN Yu-ming;LI Jia-yue;Forestry College,Inner Mongolia Agricultural University;
关键词：
Larix gmelinii;;tending thinning;;tree growth
摘  要：
Taking the natural secondary forest of Larix gmelinii in Daxing'anling mountaineous forest region of Inner Mongolia as the research object,4 kinds of thinning intensities(10%,20%,30%,40%)were set up to study the effect of thinning intensity on the forest development.The results showed that average growth DBH of stands of L.gmelinii forest significantly increased compared with the control(not thinning)5 years after thinning,in which the amouns of increase of DBH under four thinning intensities were 0.15,0.34,0.48,and 0.63 cm,respectively.Thinning intensity 40%demonstrated the most significant increase in DBH growth of the stands.The average height of the trees also increased obviously compared with the control,and the average height growth of the trees increased 0.01,0.02,0.20 and 0.25 m more than the control under four thinning intensities.But the differences among the four thinning intensities were not significant.Different thinning intensities also had some effects on the volume growth,in which 30%thinning intensity had the highest accumulation.In addition,the smaller the number of plant stand density,the lower the mortality of trees.The growth and nutrition space of trees remained after tending thinning were effectively improved.The DBHof the stands and tree height growth increased with the increase of thinning intensity.However,there was no significant difference in tree height growth and accumulation under different thinning intensities.

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