地形因子对金佛山方竹天然林幼竹生长的影响  

Influence of Terrain Factors on Young Bamboo Growth in Natural Chimonobabusa utilis Forest

作　　者：贾呈鑫卓[1] 朱宇昊 龙元丽 孙茂盛[1] Jia Chengxinzhuo;Zhu Yuhao;Long Yuanli;Sun Maosheng(Southwest Forestry University,Kunming 650224,China)

机构地区：[1]西南林业大学,昆明650224

出　　处：《世界竹藤通讯》2023年第4期65-69,共5页World Bamboo and Rattan

基　　金：云南省生物资源数字化开发应用项目(202002AA10007);云南省野生动植物保护项目(990022109)。

摘　　要：以金佛山方竹天然林为研究对象,探讨不同坡向、坡位和坡度对1年生金佛山方竹生长的影响,为金佛山方竹定向培育提供科学依据。结果显示,坡向和坡位对金佛山方竹幼竹生长的影响不显著(P>0.05),说明不同坡向和坡位均适合幼竹的生长;坡度对幼竹生长的影响达显著水平(P<0.05),其中坡度为45°时的幼竹生长表现最优;坡度与幼竹秆胸径、秆地径、秆高、节间数量和秆下部的节间长度呈极显著正相关(P<0.01),坡向与秆胸径、秆地径、秆上部及下部的节间长度存在显著负相关关系(P<0.05),坡位与幼竹各生长指标之间的相关性均未达到显著程度。The paper takes natural Chimonobabusa utilis forest to discuss the effects of different slope aspects,slope positions and slope gradients on the growth of 1-year-old bamboo,which is expected to provide a scientific basis for the directional cultivation of Ch.utilis.The result shows that slope aspect and slope position have no significant effect on young bamboo growth(P>0.05),indicating that different aspects and positions are suitable for the growth of young bamboo,while slope gradient has a significant effect on the growth of young bamboo(P<0.05),and young bamboo grows best when the slope gradient is at 45°.Slope gradient is positively correlated with DBH,ground diameter,height,number of internode and length of internode at the bottom of culm(P<0.01),while slope aspect has significantly negative correlation with DBH,ground diameter and length of internode at upper and lower part of culm(P<0.05).The correlation between slope position and growth indexes of young bamboo is not significant.

关 键 词：金佛山方竹 幼竹 生长特性 地形因子 乌蒙山国家级自然保护区 云南省 

分 类 号：S795[农业科学—林木遗传育种]