文献类型：期刊文献

中文题名：模拟林冠损伤对藜蒴栲群落林下植被生物多样性的影响

英文题名：Impact of Simulated Forest Canopy Damage on Understory Biodiversity of Natural Castanopsis fissa Community

作者：刘立强[1,2] 周光益[1] 赵厚本[1] 李力[1,2] 邱治军[1]

第一作者：刘立强

机构：[1]中国林业科学研究院热带林业研究所;[2]中南林业科技大学林学院

年份：2013

卷号：26

期号：3

起止页码：305-311

中文期刊名：林业科学研究

外文期刊名：Forest Research

收录：CSTPCD;;Scopus;北大核心:【北大核心2011】；CSCD:【CSCD2013_2014】；

基金：广东省林业科技创新项目(2008KJCX012-02);中央级公益性科研院所基本科研业务费专项资金(RITFYWZX201201;RITFY-WZX2011-12);广东林业厅项目"粤北自然保护区生物多样性定位监测研究";广东南岭森林生态系统定位研究站;国际合作创新团队项目(CAFYBB2010003-2)

语种：中文

中文关键词：林下植被;森林机械损伤;生物多样性

外文关键词：understory vegetation; forest mechanical damage; biodiversity

分类号：S718

摘要：以2008年冰雪灾害对森林生态系统的破坏为背景,通过人工去除林冠层保留树干模拟森林的机械损伤,研究粤北小坑流域藜蒴栲群落林下植被的变化。结果表明:(1)试验1.5年后,去除林冠层、林下添加枯枝落叶的处理,林下灌木、草本科、种及乔木幼苗种的数量显著增加(P<0.05);去除林冠层且地表枯落物层保持不变的处理,林下草本科、种数量增加显著,乔木幼苗及灌木科、种差异不显著(P>0.05);林下添加枯枝落叶,林冠层不做处理,林下植被各生活型物种数有所减少,但差异不显著。(2)去除林冠层后,一些阳生种如野桐、山乌桕、山苍子、红紫珠、蕨状苔草、广东蛇葡萄等大量入侵并占据优势地位,林下植被盖度显著提高。(3)去除林冠层在短期内可显著增加林下植被生物多样性,添加枯落物对林下植被生物多样性影响不显著。
According to the destruction of forest ecosystem caused by frozen lation experiment of forest mechanical damage was carried out by trimming rain and snow disaster in 2008, a simucanopy layer of Castanopsis fissa natural forest at Xiaokeng Basin in northern Guangdong, and the change of understory vegetation was studied. The results are as follows ： （1） 1.5 years after pretreatment, the family and species number of shrub, herb and the arbor seedling increased significantly （P〈0.05） in the treatment plot of TD （ trimming canopy ＋ canopy detritus adding） ; the family and species number of herb increased obviously but the number of arbor seedling and shrub had no evi- dently change （P 〉 0. 05 ） in the treatment plot of TR （ trimming canopy ＋ removing canopy detritus） ; the family and species number of arbor seedlings, shrub and herb in the treatment plot of UD （untrimming ＋ canopy detritus adding） decreased slightly. （2） The pioneer species such as Mallotus Lour. , Sapium discolor, Litsea cubeba, Callicarpa rubella, Carex filicina, Setaria palmifolia and Ampelopsis cantoniensis became dominant species in the plots of TD and TR, and their coverage of understory vegetation increased significantly. （3） Forest canopy trimming can significantly increase the biodiversity of undergrowth in a short period whereas canopy detritus adding has no measurable impact on it.