摘要
于鲁山县某油松林区进行试验,结合不同间伐强度设置4个处理,CK(未伐林地)、T1(20%强度间伐)、T2(30%强度间伐)、T3(40%强度间伐),分析了不同间伐强度对鲁山县油松长势及林下植被多样性的影响。结果表明:不同间伐强度对油松生长指标产生不同程度的影响,其中T2处理(30%强度间伐)的油松平均树高、平均胸径、平均枝下高和平均冠幅显著高于其他处理;随着间伐强度的增加,单株材积呈先增后减的趋势,林分蓄积呈逐渐递减的趋势,T2处理的油松单株材积较高,CK处理林分蓄积较高;各处理油松林下植被多样性呈T2>T3>T1>CK的趋势。由此说明,不同间伐强度对鲁山县油松长势及林下植被多样性产生不同程度的影响,以30%强度间伐下的油松长势较佳,林下植被较为丰富。研究结果以期为鲁山县油松营林抚育提供参考。
The effects of different thinning intensity on the growth and understory vegetation diversity of Pinus tabulatus in Lushan County were analyzed in order to provide a reference for forest management of Pinus tabulatus in Lushan County.In this study,an experiment was conducted in a Pinus tabulates forest area in Lushan County.Four treatments,CK(uncut forest area),T1(20%intensity thinning),T2(30%intensity thinning)and T3(40%intensity thinning),were set in combination with different thinning intensification to analyze the effects of different thinning intensification on the growth and understory vegetation diversity of Pinus tabulatus in Lushan County.The results showed that different thinning intensities had different effects on the growth indexes of Pinus tabulatus.The average tree height,average DBH,average height under branch and average crown width of Pinus tabulatus under T2 treatment(30%thinning intensity)were significantly higher than those under other treatments.With the increase of thinning intensity,the individual tree volume increased first and then decreased,and the stand stock volume gradually decreased.The individual tree volume of T2 treatment was higher,and the stand volume of CK treatment was higher.Under each treatment,the vegetation diversity showed the trend of T2>T3>T1>CK.These results indicate that different thinning intensities have different effects on the growth and understory vegetation diversity of Pinus tabulatus in Lushan County.The growth of Pinus tabulatus with 30%thinning intensity is better and the understory vegetation is more abundant.
作者
王建伟
Wang Jianwei(Forestry Bureau of Lushan County,Lushan 467300,Henan,China)
出处
《绿色科技》
2025年第9期117-120,共4页
Journal of Green Science and Technology
关键词
间伐强度
油松长势
林下植被多样性
鲁山县
thinning intensity
Pinus tabulaeformis growth
understory vegetation diversity
Lushan County
