文献类型：期刊文献

中文题名：飞播马尾松林林分空间结构对林下植被多样性的影响

英文题名：Effects of Stand Spatial Structure on Understory Vegetation Diversity of Aerial Seeding Pinus massoniana Plantations

作者：黎芳[1] 潘萍[2] 宁金魁[2] 赖国桢[2] 欧阳勋志[2] 徐辉[2] 郭丽玲[2] 吴自荣[2] 易祖滨[3]

第一作者：黎芳

机构：[1]中国林业科学研究院亚热带林业实验中心;[2]江西农业大学;[3]江西省兴国县林业局

年份：2016

卷号：44

期号：11

起止页码：31-35

中文期刊名：东北林业大学学报

外文期刊名：Journal of Northeast Forestry University

收录：CSTPCD;;北大核心:【北大核心2014】；CSCD:【CSCD_E2015_2016】；

基金：国家自然科学基金项目(31360181)

语种：中文

中文关键词：飞播造林;马尾松林;林下植被;林分空间结构;植被多样性

外文关键词：Aerial seeding;Pinus massoniana plantations;Understory vegetation;Stand spatial structure;Diversity

分类号：S718.5

摘要：以飞播马尾松中龄林为研究对象,通过典型样地调查,运用单因素方差及灰色关联分析方法,分析林分空间结构对林下植被多样性的影响。结果表明:(1)大小比数对灌木及草本层多样性及盖度影响均不显著(P>0.05);角尺度、混交度对灌木及草本Shannon-Wiener指数影响显著(P<0.05),且混交度对草本Patrick指数影响达到显著水平(P<0.05);空间密度、开敞度对草本Shannon-Wiener指数影响显著(P<0.05),且开敞度对灌木Patrick指数的影响达显著水平(P<0.05),空间密度对灌木盖度的影响达显著水平(P<0.05);各种空间结构指数对Pielou指数的影响均不显著(P>0.05)。总体上,林下植被多样性表现为林木随机分布的林分高于聚集分布的林分,混交林高于纯林,中等密度林分高于高密度林分,开敞度基本充足的林分高于开敞度严重不足的林分。(2)受林下植被物种多样性影响最大的是空间密度,最小的是大小比数。因此,以调整林分密度为主,综合调整林木分布格局、树种结构及其开敞度,将有利于提高林下植被的多样性。
With the understory vegetation of aerial seeding Pinus massoniana plantations in the middle age , we explored the effect of spatial structure on the understory vegetation diversity by investigating the typical plots by one -way ANOVA meth-od and grey correlation analysis method .The results showed that： （ 1） Both uniform angle index and mingling degree had significant influence on Shannon-Wiener index of shrub and herb;the influence of mingling degree to Patrick index of herb also reached a significant level , while non-significant influence of neighborhood comparison was found on all diversity inde-xes of shrub and herb;both the effects of spatial density and opening degree on Shannon-Wiener indexes of herb were sig-nificant .The opening degree had a significant impact on the Patrick index of shrub and spatial density had a significant im -pact on the cover of shrub;non-significant relationship was found between all spatial structure indexes and Pielou index .O-verall, the diversity indexes of understory vegetation were the mixed stands〉the pure stands , the stands of random distribu-tion〉the stands of aggregated distribution , middle density stands〉high density stand , and the stands of basically adequate opening degree〉the stands of seriously short opening degree .（ 2） Through the grey correlation analysis between the stand spatial structure indexes and understory vegetation diversity indexes , spatial density had the greatest influence on the spe-cies diversity of understory vegetation , and the minimum was the neighborhood comparison .Therefore, after giving priority to adjust the stand density integrated with regulating the spatial pattern of the tree , species structure and opening degree will be conducive to improve the diversity of the understory vegetation .