36年生鹅掌楸与檫木混交造林效果及林分结构  

Afforestation Effect and Stand Structure of 36-Year-Old Liriodendron chinense andSassafras tzumu Mixed Forest

作　　者：向明 刘丛全 彭梦游 姚茂华 向祖恒 马丰丰[2] 何勇 张鹏 刘冬梅 XIANG Ming;LIU Congquan;PENG Mengyou;YAO Maohua;XIANG Zuheng;MA Fengfeng;HE Yong;ZHANG Peng;LIU Dongmei(Longshan County Forestry Bureau,Longshan 416800,Hunan China;Hunan Provincial Academy of Forestry,Changsha 410004,China)

机构地区：[1]龙山县林业局,湖南龙山416800 [2]湖南省林业科学院,湖南长沙410004

出　　处：《吉首大学学报（自然科学版）》2024年第5期68-76,共9页Journal of Jishou University(Natural Sciences Edition)

摘　　要：以龙山县中海拔山区的36年生鹅掌楸与檫木混交林为研究对象,对混交林的混交效果、萌蘖对鹅掌楸生长的影响及鹅掌楸林分结构等进行了研究.结果表明:鹅掌楸与檫木不适宜营建混交林,36年生鹅掌楸混交林林分生长量中等,现有密度756±80株/hm 2,可作大中径材培育;萌蘖对鹅掌楸的直径、冠幅和蓄积有显著影响,鹅掌楸幼树需及时除蘖整枝;优势树种鹅掌楸直径分布呈左偏的近似正态分布,其模型适用性χ2检验结果仅遵从正态分布,不遵从Weibull分布;鹅掌楸树高分布呈右偏的近似正态分布,其模型适用性未通过χ2检验,不遵从正态分布,也不遵从Weibull分布;三次方程为鹅掌楸树高-直径最优拟合曲线方程.The 36-year old mixed forest of Liriodendron chinense and Sassafras tzumu in the middle altitude mountain area of Longshan County was studied from the aspects of the mixing effect of the mixed forest,the influence of spinning tillering on the growth of Liriodendron chinense and the stand structure.The results showed that Liriodendron chinense and Sassafras tzumu were not suitable for the construction of mixed forest.The 36-year old mixed forest had medium stand growth,and the existing density was 756±80 trees/hm 2,which could be used for medium and large-diameter wood cultivation.Tillering has a significant effect on the diameter,crown width and stock of Liriodendron chinense.The diameter distribution of Liriodendron chinense showed a left-leaning approximate normal distribution,and the model applicabilityχ2 test only followed the normal distribution,but not the Weibull distribution.The height distribution of Liriodendron chinense showed a right-leaning approximate normal distribution,and its model applicability did not pass theχ2 test and did not conform to the normal distribution or Weibull distribution.The cubic equation is the best fitting curve equation for the height and diameter of liriodendron tree.

关 键 词：鹅掌楸 檫木 混交林 林分结构 萌蘖 

分 类 号：S758.5[农业科学—森林经理学]