摘要
参照CTFS技术标准在鹞落坪国家级自然保护区(以下简称鹞落坪自然保护区)建立11.56 hm^2动态监测样地,以鹞落坪自然保护区落叶阔叶林乔木树种为研究对象,探讨其区系组成、种群结构、物种多样性以及优势种种间联结性。结果表明:(1)样地内胸径≥1 cm的乔木共有24910株,分属于35科、57属、103种;优势科为蔷薇科、槭树科、冬青科、樟科、杜鹃花科、虎耳草科、桦木科、壳斗科;(2)样地内乔木树种分布相对均匀,主要优势树种为茅栗、鹅耳枥、白檀和四照花;乔木树种在各个高度均有分布,但主要集中在2—8 m之间;(3)χ~2检验结果显示,样地内15个优势种105个树种对中仅有32个树种对之间存在显著的相关性,说明群落种间关联较弱。从联结系数(AC)来看,105个树种对中呈现显著正关联的树种对占42.9%,显著负关联的树种对占24.8%,但关联强度大部分集中在相对较低的水平,表明该地区群落结构整体仍处于发育阶段。
To study the mechanisms of succession and species coexistence in this forest type,a 11.56 hm^2 forest plot in the Yaoluoping Nation Nature Reserve was established according to the CTFS technical standards. In this plot,all free-standing trees with DBH( diameter at breast height)≥ 1 cm were mapped,tagged,and identified. Preliminary results on floristic characteristics,community composition,species diversity and interspecific associations were determined and discussed in this study. The results showed that:( 1) There were 24910 individuals,which belonged to 103 species,57 genera,and 35 families. The eight most dominant families were Rosales,Aceraceae,Aquifoliaceae,Lauraceae,Ericaceae,Betulaceae,Saxifragaceae,and Fagaceae.( 2) In the sample plot,the species diversity was distributed evenly. The four most dominantspecies were Castanea seguinii,Carpinus turczaninowii,Symplocos paniculata,and Dendrobenthamia var. chinensis. The trees were distributed at all heights,but mainly between 2 m and 8 m.( 3) The χ^2test showed there was a significant correlation among 32 species pairs of 105 species pairs. The analysis of the AC results revealed that among the 105 species pairs of the 15 dominant populations,49. 2% had significant positive correlations and 24. 8% had significant negative correlations,and the association intensity was concentrated at relatively low levels,which indicated that the community structure was still in the growth stage.
作者
王丽
常锦利
周守标
王晓英
张佳期
闫少凯
张金铭
陈鑫
赵昕
王智
WANG Li;CHANG Jinli;ZHOU Shoubiao;WANG Xiaoying;ZHANG Jiaqi;YAN Shaokai;ZHANG Jinming;CHEN Xin;ZHAO Xin;WANG Zhi(College of Environmental Science and Engineering,Anhui Normal University,Wuhu 241003,China;Anhui Provincial Engineering Laboratory of Water and Soil Pollution Control and Remediation,Wuhu 241003,China;College of Life Sciences,Anhui Normal University,Wuhu 241000,China;Nanjing Institute of Environmental Science and Engineering,Nanjing 210042,China)
出处
《生态学报》
CAS
CSCD
北大核心
2019年第1期309-319,共11页
Acta Ecologica Sinica
基金
中央级科学事业单位修缮购置专项(831440)
关键词
鹞落坪国家级自然保护区
落叶阔叶林
植物区系
种群结构
物种多样性
种间联结性
Yaoluoping National Nature Reserve
deciduous broad-leaved forest
flora
population structure
species diversity
interspecific connectivity
