福建林业科技2023，Vol.50Issue(4)：6-12,35,8.DOI:10.13428/j.cnki.fjlk.2023.04.002
人工促进更新米槠次生林群落α多样性分析
Analysis of α Diversity in Artificially Assisted Regeneration Castanopsis carlesii Secondary Forest
摘要
Abstract
In 2022,the secondary forest of Castanopsis carlesii,which has been artificially assisted regeneration by different thinning intensities(heavy thinning,moderate thinning,low thinning)for40 years in the state-owned forest farm of Youxi County,Fujian Prov-ince,was taken as the research object to explore the characteristics of community structure and species diversity of artificially assisted regeneration of Castanopsis carlesii.The results showed that:the analysis of species-area accumulation curve showed that the sampling was sufficient in the study area,four mathematical models were selected to fit the species-area accumulation curve of the community as a whole,and the logarithmic square function was selected as the optimal fitting model,the equation was S=(2.9804+1.74181ogA)2.The species composition is relatively rich,and the community has a total of 39 families,58 genera and 102 species;Castanopsis carlesii has the highest important value and forms the dominant tree species in the tree layer;with the increase of direc-tional interference intensity,the impact on the important value of the target species increases gradually.There were no significant differences in species richness,Shannon index,Simpson index and different thinning intensity;and there were significant differences in tree,shrub and herb layer,the order of species richness,Shannon index,Simpson index and rarefy was shrub layer＞tree layer＞herb layer.The results can provide reference for vegetation restoration and species allocation of zonal evergreen broad-leaved forest in this region.关键词
人工促进更新/米槠次生林/物种组成/α多样性Key words
artificially assisted regeneration/Castanopsis carlesii secondary forest/species composition/α diversity分类
农业科技引用本文复制引用
林本宽..人工促进更新米槠次生林群落α多样性分析[J].福建林业科技,2023,50(4):6-12,35,8.基金项目
福建省科技厅项目(2022R1010002) （2022R1010002）
国家林业局南方山地用材林重点实验室、福建省森林培育与林产品加工利用重点实验室资助 （）
