With the development of Taxus industry,bark is becoming more important as the raw medicinal material due to the highest content of taxol in Taxus yunnanensis.With reference to classification of tree diameter class standard,the stem and branch diameter of Taxus yunnanensis in plantation could be divided into 5 classes.A study was carried out on 270 stem and branch samples from Kunming site and 67 samples from Yibin site.The result shows that the content of fresh bark weight varied from 12.88% to 28.98%,the content of dry bark weight varied from 11.01% to 26.36%.The mean water content of stem and branch is 53.89%,and of bark is 60.74%.The variety of water content with the increase of stem and branch diameter class is irregular.The content of fresh and dry bark weight decreased obviously when the stem and branch diameter increased.The relationship between the bark content and the stem and branch diameter could be described by the power function equation.
LI Yongpeng
,
ZHANG Jinfeng
,
FENG Qian
,
WANG Lei
,
WEN Shuang
,
FANG Jun
. Bark and Water Content in Different Diameter Stems and Branches of Taxus yunnanensis[J]. Forest and Grassland Resources Research, 2016
, 0(5)
: 98
-102
.
DOI: 10.13466/j.cnki.lyzygl.2016.05.017
[1] 李莲芳,周云,王达明.云南红豆杉濒危成因剖析[J].西部林业科学,2005,34(3):30-34.
[2] 苏建荣,张志钧,邓疆.不同树龄、不同地理种源云南红豆杉紫杉醇含量变化的研究[J].林业科学研究,2005,18(4):369-374.
[3] 王卫斌,姜远标,王达明,等.云南红豆杉及其药用原料林培育技术[J].林业科技,2008,33(1):19-23.
[4] 史鸿飞,王卫斌,张劲峰,等.云南红豆杉人工林定向培育的目标与模式[J].林业调查规划,2010,35(4):73-76.
[5] 王达明,李莲芳,周云,等.云南红豆杉人工药用原料林的经营技术[J].西部林业科学,2004,33(1):8-14.
[6] 周云,王达明,李莲芳,等.西双版纳普文试验林场云南红豆杉种植试验[J].西部林业科学,2005,34(2):48-52.
[7] 景跃波,王卫斌,张劲峰,等.云南红豆杉人工林幼树期林木的高径生长节律及其与气象因子的关联分析[J].西部林业科学,2009,38(1):60-64.
[8] 李勇鹏,王卫斌,段昌群,等.昆明树木园云南红豆杉人工林的物候观测研究[J].西部林业科学,2009,38(1):116-119.
[9] 王卫斌,郭华,王达明,等.我国的云南红豆杉资源及其药用原料林培育技术的研究进展[J].西部林业科学,2007,36(2):122-128.
[10] 王达明,周云,张裕农,等.云南红豆杉优树选择研究[J].西部林业科学,2007,36(4):1-10.
[11] 王磊,张劲峰,杨德军,等.云南红豆杉紫杉烷优良无性系的筛选[J].林业资源管理,2013(6):154-156.
[12] 周俊新.基于MSM-PP的厚朴种源多性状综合选择[J].福建林学院学报,2014,34(3):261-268.
[13] 符韵林,万业靖,陈松武,等.速生桉不同树龄的生材密度及树皮率变异研究[J].西北林学院学报,2010,25(4):135-138.
[14] 郭群.苏柳172主干树皮率与含水率研究[J].山东林业科技,2015(4):97-101.
[15] 何美成.关于林木径阶整化问题[J].林业资源管理,1998(6):33-36.
[16] Vindhya P T,Mariswamy K M.Heartwood,sapwood and bark content of teak trees grown in Karnataka,India[J].Journal of Forestry Research,2013,24(4):721-725.
[17] 覃引鸾,陈桂丹,莫引优,等.尾巨桉树皮率及树皮纤维尺寸的变异研究[J].福建林业科技,2010,37(3):37-40.
[18] 闵学武.华北落叶松木质与树皮材积比率和胸径关系的探讨[J].河北林业科技,2010(1):8-9.
[19] 林如清.巨尾桉树皮率估测模型的研究[J].林业资源管理,2006(1):47-53.
