摘要
以仅分布在中国贵州斗篷山,属于极度濒危物种的毛环方竹为研究对象,采用样方法从龄级、径级和高度级3个方面对人为干扰下毛环方竹无性系种群的结构和动态进行初步研究。结果表明：毛环方竹无性系种群的年龄结构中,龄级为Ⅳ和Ⅴ的分株数量分别占总分株数的30.0%和34.4%。胸径的最大值5.3 cm,最小值0.3 cm,平均值1.7 cm,主要分布范围为1.1~1.9 cm。高度的最大值为9.8 m,最小值为0.4 m,平均值为4.8 m,主要分布范围为3.1-7.0 m。胸径和高度随龄级的增大而增大。毛环方竹无性系种群呈衰退趋势。
Chimonobambusa hirtinoda is critically endangered species, which only survives on Doupeng Mauntain in Guizhou Province in China. A study was carried out in order to understand structure and dynamic changes of Ch. hirtinoda clone population under hu- man activities. Age-class, diameter-class and height-class of the population were analysized respectively. The results showed that the number of 1Vand V age-class individuals accounted for the total number of trees were 30. 0% and 34. 4%. The maximum of diam- ete diameter at breast height is 5.3 cm, the minimum is 0. 3 cm, the average is 1.7 cm, with the main distribution range of 1.1 to 1.9 cm. The maximum value of height is 9. 8 m,the minimum is 0. 4 m,the average value is 4. 8 m, the main distribution range is 3.1 - 7.0 m. The diameter at breast height and height increased with the increase of age. A decline trend was found in the clonal population of Ch. hirtinoda.
作者
苏春花
朱四喜
黎天驰
周晓
万妮
SU Chun-hua ZHU Si-xi LI Tian-chi ZHOU Xiao WAN Ni(College of Chemistry ＆ Environmental Science, Guizhou Minzu University, Guiyang 550025, Guizhou, Chin)
出处
《福建林业科技》
2016年第3期62-66,共5页
Journal of Fujian Forestry Science and Technology
基金
贵州省科学技术基金(黔科合J字[2012]2192号)
贵州省科学技术基金(黔科合J字LKM[2012]05号)
关键词
毛环方竹
无性系种群
种群结构
Chimonobambusa hirtinoda
clone population
population structure
