广西林业科学2026，Vol.55Issue(3)：263-271,9.DOI:10.19692/j.issn.1006-1126.20260305
广西环江不同人工林林下植物多样性及影响因子分析
Analysis on Understory Plant Diversities and Influencing Factors in Different Plantations in Huanjiang,Guangxi
摘要
Abstract
In order to investigate understory plant diversity characteristics and their influencing factors in plan-tations in Huanjiang Maonan autonomous county of Guangxi,taking Pinus massoniana,eucalypt,Liquidambar formosana,Pinus elliottii,Schima superba and Acer pictum subsp.mono plantations in Huashan forest farm as research objects,understory plant diversity characteristics in different plantations were analyzed.Results showed that in six plantations,a total of 232 plants belonging to 190 genera and 131 families were recorded in shrub layer,while 120 plants belonging to 113 genera and 83 families were recorded in herb layer.P.massoni-ana plantation had the most plant species in shrub layer,while L.formosana plantation had the most plant spe-cies in herb layer.No dominant species were found in shrub layers in six plantations.In herb layer,no dominant species were found in P.massoniana,S.superba and A.pictum subsp.mono plantations,and dominant species in eucalypt,L.formosana and P.elliottii plantations were Dicranopteris linearis,Dicranopteris pedata and Nephrolepis cordifolia,with importance values of 0.539 0,0.300 4 and 0.464 4 respectively.In shrub layer,P.massoniana plantation exhibited the highest Shannon-Wiener index,Simpson index and Margalef richness index,while S.superba plantation had the highest Pielou evenness index.In herb layer,A.pictum subsp.mono plantation had the highest Shannon-Wiener index,S.superba plantation showed the highest Simpson index and Pielou evenness index,and L.formosana plantation had the highest Margalef richness index.Average clear bole height,average tree height and average DBH overall significantly affected plant diversity in shrub layer,while average tree height,average DBH,litter mass per unit area and soil moisture content significantly affected plant diversity in herb layer.Moderate thinning or mixed planting,along with appropriate litter removal were recom-mended to help enhance understory plant diversities in main plantations in Huanjiang Maonan autonomous county of Guangxi.关键词
人工林/植物多样性/林分环境因子/人工林管理Key words
plantation/plant diversity/stand environmental factor/plantation management分类
农业科技引用本文复制引用
韦昌汛,唐生森,尹明善,覃永康,潘政顶,欧成军,杨章旗,钟耀杰..广西环江不同人工林林下植物多样性及影响因子分析[J].广西林业科学,2026,55(3):263-271,9.基金项目
广西林业科技推广示范项目(2023GXLK19) （2023GXLK19）
广西自筹经费林业科技项目(桂林科研[2022ZC]第90号) （桂林科研[2022ZC]第90号）
广西科技重大专项(桂科AA24263024-2) （桂科AA24263024-2）
