摘要
以5个海拔梯度(900 m~1000 m、1000 m~1100 m、1100 m~1200 m、1200 m~1300 m、1300 m~1400 m)及4个坡向(阴坡、半阴坡、半阳坡和阳坡)的栓皮栎优树为对象,研究了不同海拔和坡向对栓皮栎优树生长的影响。结果表明,海拔对栓皮栎优树树高存在显著影响,对其胸径存在极显著影响,对其冠幅无显著影响。栓皮栎优树树高随海拔升高呈升高的变化趋势,胸径随海拔升高呈“降—升—降”的变化趋势,冠幅随海拔升高呈先升高后降低的变化趋势。坡向对栓皮栎优树树高、胸径和冠幅的影响较小。
The effects of different altitudes and slope orientations on the growth of sperior trees of Quercus variabilis were in vestigated in 5 altitude gradients(900 m~1000 m,1000 m~1100 m,1100 m~1200 m,1200 m~1300 m,1300 m~1400 m)and 4 slope orientations(shaded,semi-shaded,semi-positive and positive slopes).The results showed that altitude had a significant effect on the height of superiort rees of Quercus variabilis,a highly significant effect on their diameter at breast height and no significant effect on their crown width.The height of the superior trees of Quercus variabilis showed an increasing trend with the increase of altitude,the diameter at breast height showed a“descending-ascending-descending”trend with the increase of altitude,and the crown width showed a firstly increasing and then decreasing trend with the increase of altitude.The influence of slope direction on the height,diameter at breast height and crown spread of superior trees of Quercus variabilis was relatively small.
作者
原庆峰
Yuan Qingfeng(Henghe Forest Farm,National Forest Administration Bureau of Zhongtiao Mountain in Shanxi Province,Yangcheng 048100,China)
出处
《山西林业科技》
2024年第4期47-49,共3页
Shanxi Forestry Science and Technology
关键词
栓皮栎
海拔
坡向
生长
Superior trees of Quercus variabilis
Altitude
Slope
Growth
