文献类型：期刊文献

中文题名：广西大青山西南桦人工林群落结构特征

英文题名：The Community Construction Character of the Betul alnoides Plantation of Da Qing Mountain Area in Guangxi Zhuang Autonomous Region

作者：杨保国[1] 刘士玲[1,2] 贾宏炎[1,2] 庞圣江[1] 张培[1] 黄旭光[1] 韦菊玲[1] 杨桂芳[1]

第一作者：杨保国

机构：[1]中国林业科学研究院热带林业实验中心;[2]广西友谊关森林生态系统国家定位观测研究站

年份：2016

卷号：45

期号：4

起止页码：414-418

中文期刊名：广西林业科学

外文期刊名：Guangxi Forestry Science

收录：CSTPCD

基金：国家"十二五"科技支撑计划项目(2012BAD21B0102);中国林业科学研究院热带林业实验中心主任基金项目(RL2015-02)

语种：中文

中文关键词：西南桦;群落结构;物种组成;林分密度;径级结构

外文关键词：Betula alnoides ; community construction; species composition; stand density; size structure

分类号：S792.159

摘要：通过对西南桦(Betula alnoides)纯林、西南桦+马尾松(Pinus massoniana)、西南桦+杉木(Cunninghamia lanceolata)、西南桦+红锥(Castanopsis hystrix)混交林4种群落类型的群落特征进行分析,结果表明:西南桦人工林群落林下物种数量丰富,除西南桦+马尾松混交林(55种)外,西南桦纯林(106种)、西南桦+杉木(102种)和西南桦+红锥(119种)混交林已超过同气候带天然林群落内林下物种数量;林下物种组成种类相似,但其分布具有一定的差异性和不均匀性。西南桦径级分布相对混交树种更偏向对大径级分布,这说明西南桦比混交树种更具有竞争优势,有利于西南桦大径材的培育。
The authors analyzed the community construction characters of four community types： Betul alnoides pure forest, Betula alnoides ＋ Pinus massoniana mixed forest, Betula alnoides ＋ Cunninghamia lanceolata mixed forest and Betula alnoides ＋ Castanopsis hystrix mixed forest. The results showed that the understory species was rich in plantation community of Betul alnoides, except for the Betula alnoides ＋ Pinus massoniana mixed forest （55 species）. The understory species of the Betul alnoicles pure forest （106 species）, Betula alnoides ＋ Castanopsis hystrix mixed forest （102 species）, Betula alnoides ＋ Castanopsis hystrix mixed forest （119 species） were more than that of the natural forest community in the same climate zone. The understory species were similar, but the distribution had certain difference and non-uni-formity. The size structure of Betul alnoides tended to large diameter class distribution, compared to their mixed tree species. It showed that the Betul alnoides had more competitive advantages than other mixed tree species, and it＇ s beneficial to cultivate Betul alnoides with large diameter.