摘要
为了解人工混交林群落结构特征和物种多样性关系,对广州龙眼洞林场内闽楠(Phoebebournei)-樟(Cinnamomum camphora)人工混交林进行群落结构分析。结果表明,0.37 hm^(2)样地内共有128种植物9563株,隶属于57科99属;其中乔木35种,灌木61种,草本98种。在乔木层中,重要值排名前5的植物分别是山乌桕(Triadica cochinchinensis)(33.86%)、闽楠(17.24%)、樟(12.96%)、三桠苦(Melicopepteleifolia)(7.92%)和山苍子(Litseapungens)(3.70%);灌木层以茜草科(Rubiaceae)植物为主;草本层以禾本科(Poaceae)植物为主。乔木层、灌木层和草本层的Shannon-Wiener指数分别为1.230、1.708和1.754,Simpson指数分别为0.635、0.680和0.707,表明该人工混交林下草本物种丰富。非度量多维尺度分析(NMDS)表明,不同样方的物种组成相似性并不一致,部分样方含有偶见种。群落的径级结构呈倒“J”型,其中11.64%为幼苗,苗木占比6.08%,小树占比55.34%,壮树占比25.28%,大树占比仅为0.70%,因此推测闽楠-樟人工混交林仍处于演替初期。
In order to understand the relationship between community structure with species diversity of artificial mixed forest,the community structure of Phoebe bournei-Cinnamomum camphora mixed plantation in Longyandong Forest Farm in Guangzhou was analyzed.The results showed that there were 128 species 9563plants in 0.37 hm^(2) quadrat,belonging to 57 families and 99 genera,in which there were 35 tree,61 shrub,and 98herb species.In tree layer,the species with importance value at top 5 were Triadica cochinchinensis(33.86%),Phoebe bournei(17.24%),Triadica cochinchinensis(12.96%),Melicope pteleifolia(7.92%),and Litsea pungens(3.70%),the shrub layer was dominated by Rubiaceae,and did the herb layer by Poaceae.The Shannon-Wiener indexes of tree,shrub and herb layers were 1.230,1.708,and 1.754,respectively,and the Simpson indexes were 0.635,0.680,and 0.707,indicating that artificial mixed forest was rich in herbaceous species.The non-metric multidimensional scale(NMDS)analysis showed that the similarity of species composition was not consistent in different plots,and some plots contained occasional species.The diameter class structure of the community showed an inverted“J”type,of which 11.64% were seedlings,and saplings,small trees,strong trees and large trees account for 6.08%,55.34%,25.28%,and 0.70%,respectively.Therefore,it was suggested that the Phoebe bournei-Cinnamomum camphora mixed plantation was still in the early successional stage.
作者
程欣欣
洪维
邓双文
魏雪莹
张干荣
冯蔚
郭勇
叶华谷
王发国
CHENG Xinxin;HONG Wei;DENG Shuangwen;WEI Xueying;ZHANG Ganrong;FENG Wei;GUO Yong;YE Huagu;WANG Faguo(Zhongkai University of Agriculture and Engineering,Guangzhou 510225,China;South China Botanical Garden,Chinese Academy of Sciences,Guangdong Provincial Key Laboratory of Applied Botany,Guangzhou 510650,China;Longyandong Forest Farm of Guangdong Province,Guangzhou 510520,China)
出处
《热带亚热带植物学报》
CAS
CSCD
北大核心
2022年第2期233-240,共8页
Journal of Tropical and Subtropical Botany
基金
广州市野生动植物保护管理办公室项目(SYZFCG-[2017]032)
广东省龙眼洞林场项目(Y934111001)资助。
关键词
闽楠-樟人工林
物种多样性
群落结构
群落演替
Phoebe bournei-Cinnamomum camphora plantation
Species diversity
Community structure
Community succession
