广西环江不同人工林林下植物多样性及影响因子分析OA
Analysis on Understory Plant Diversities and Influencing Factors in Different Plantations in Huanjiang,Guangxi
为探究广西环江毛南族自治县人工林林下植物多样性特征及其影响因子,以华山林场马尾松(Pinus massoniana)、桉树、枫香(Liquidambar formosana)、湿地松(Pinus elliottii)、木荷(Schima superba)和五角槭(Acer pictum subsp.mono)人工林为研究对象,分析不同人工林林下植物多样性特征.结果表明,6种人工林灌木层共有131科190属232种植物,草本层共有83科113属120种植物;马尾松人工林灌木层植物种数最多,枫香人工林草本层植物种数最多.6种人工林灌木层均无优势种;马尾松、木荷和五角槭人工林草本层均无优势种,桉树、枫香和湿地松人工林草本层优势种分别为铁芒萁(Di-cranopteris linearis)、芒萁(Dicranopteris pedate)和肾蕨(Nephrolepis cordifolia),重要值分别为0.539 0、0.300 4和0.464 4.马尾松人工林灌木层Shannon-Wiener指数、Simpson指数和Margalef丰富度指数均最高,木荷人工林灌木层Pielou均匀度指数最高;五角槭人工林草本层Shannon-Wiener指数最高,木荷人工林草本层Simpson指数和Pielou均匀度指数均最高,枫香人工林草本层Margalef丰富度指数最高.平均枝下高、平均树高和平均胸径总体对灌木层多样性有显著影响,平均树高、平均胸径和单位面积枯落物质量及土壤含水率总体对草本层植物多样性有显著影响.建议适度间伐或混交,适度清除枯落物,有助于提升广西环江毛南族自治县主要人工林林下植物多样性.
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.
韦昌汛;唐生森;尹明善;覃永康;潘政顶;欧成军;杨章旗;钟耀杰
广西师范大学 生命科学学院,广西 桂林 541006广西壮族自治区林业科学研究院,广西 南宁 530002环江毛南族自治县华山林场,广西 河池 547100环江毛南族自治县华山林场,广西 河池 547100环江毛南族自治县华山林场,广西 河池 547100广西壮族自治区国有钦廉林场,广西 钦州 535099广西壮族自治区林业科学研究院,广西 南宁 530002广西师范大学 生命科学学院,广西 桂林 541006
农业科技
人工林植物多样性林分环境因子人工林管理
plantationplant diversitystand environmental factorplantation management
《广西林业科学》 2026 (3)
263-271,9
广西林业科技推广示范项目(2023GXLK19)广西自筹经费林业科技项目(桂林科研[2022ZC]第90号)广西科技重大专项(桂科AA24263024-2)
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