文献类型：期刊文献

中文题名：广西大青山西南桦人工林林下植物多样性与稳定性

英文题名：Species diversity and community stability of Betula alnoides plantations in Daqingshan mountain areas of Guangxi

作者：庞圣江[1,2] 张培[1] 杨保国[1] 唐诚[3] 曾杰[3] 贾宏炎[1]

第一作者：庞圣江

机构：[1]中国林科院热带林业实验中心;[2]广西友谊关国家森林生态系统定位观测研究站;[3]中国林科院热带林业研究所

年份：2018

卷号：38

期号：2

起止页码：103-107

中文期刊名：中南林业科技大学学报

外文期刊名：Journal of Central South University of Forestry & Technology

收录：CSTPCD;;北大核心:【北大核心2017】；CSCD:【CSCD_E2017_2018】；

基金："十三五"国家重点研发计划子课题(2016YFD0600604-01);中国林科院热带林业实验中心主任基金项目(RL2015-08)

语种：中文

中文关键词：西南桦;林下植被;群落;多样性;稳定性;人工林

外文关键词：Betula alnoides; understory plant; community; diversity; stability; plantation

分类号：S718.5

摘要：以广西大青山西南桦人工林为研究对象,根据林分类型设置53块20 m×30 m典型样地,在群落学的调查基础上,分析西南桦人工林植物多样性和群落稳定性,揭示了人工植被的动态变化特征。结果表明:(1)大青山林区西南桦人工林,记录到林下植物种类76科139属164种;植物优势种重要值所占比例较大(西南桦纯林49.77%,西南桦×红锥混交林58.40%,西南桦×灰木莲混交林50.04%,西南桦×杉木混交林58.17%和西南桦×马尾松混交林70.18%),其在群落结构和演替发展中占据优势地位。(2)灌木层植物种类最多,ShannonWiener指数和Simpson指数均表现为灌木层>乔木树种>藤本植物>草本层。(3)利用改进的M.Godron稳定性测定方法测得,人工林下植物群落均处一定的稳定状态,说明植物群落的物种多样性越大,群落结构越复杂,有利于维持群落的稳定。
The 53 plots of 20 m×30 m were set up according to stand types of Betula alnoides plantations in Daqingshan forest region,there were selected to study the species diversity and community stability of the plantations,In order to explore the dynamic characteristics and change mechanism of artificial vegetation.The results showed that：（1）A total of 164 species belonging to 139 genera and 78 families were recorded across forest types,there were a large proportion in the importance values of dominant species（the pure plantations49.77%,Betula alnoides×Castanopsis hystrix mixed plantations 58.40%,Betula alnoides×Manglietia glauca mixed plantations 50.04%,Betula alnoides×Cunninghamia lanceolata mixed plantations 50.04%,Betula alnoides×Pinus massoniana mixed plantations 70.18%）,its occupied the favorable position in structure of community and succession.（2）Shrub plants was the most abundant species in Betula alnoides plantations,Shannon-Wiener index and Simpson index showed shrub layer 〉arbor species 〉vine species 〉herb layer.（3）Using the modified method of M.Gordon to measure the stability of 4 communities,the plant communities was stable state in the artificial forest,with more species diversity of plant communities,forest structure is more complex and stability is better.