不同经营模式对杉木人工林生长量和生物量的影响江廷均（福建省洋口国有林场，福建南平353221）摘要：以福建省洋口国有林场30a林龄杉木人工林择伐（Z）、择伐套种闽楠（ZT）和对照（CK）3种不同经营模式为研究对象，测定其10a后林分生长量和生态系统生物量。结果表明：择伐能够提高杉木树高、胸径生长量，林下套种闽楠能够促进杉木林分生长，增加生态系统生物量。各处理杉木平均树高、平均胸径和平均单株立木材积均表现为ZT＞Z＞CK，其中ZT处理的杉木平均胸径和平均单株立木材积显著高于CK（＜0.05）。不同经营模式的杉木林分各器官生物量均表现为干＞根＞叶＞枝，各器官总生物量表现为CK＞ZT＞Z。生态系统乔木层生物量、凋落物层生物量和总生物量均表现为ZT＞CK＞Z；林下植被层生物量表现为CK＞Z＞ZT。ZT处理的40a林龄杉木与11a林龄闽楠异龄复层混交林的杉木平均胸径27.76cm、平均单株立木材积0.6997m3、林分总蓄积量391.12m3·hm-2、生态系统总生物量125.40t·hm-2，分别比CK增加16.15%、38.94%、7.87%、9.30%。关键词：杉木人工林；择伐；套种；闽楠；生长量；生物量中图分类号：S752.2文献标识码：A文章编号：文章编号：1003-4382（2023）03-0045-04JIANGTingjun(Fujianyangkoustateownedforestfarm,Nanping353221,Fujian,China)Thestandgrowthandecosystembiomassofthreedifferentmanagementmodelsincludingselectivelogging(Z),selectivelogginginter-croppingof(ZT),andcontrol(CK),whichusedto30yearsoldartificialforestbuiltinFujianYangkoustateownedForestFarm,weremeasured.Theresultswereasfollowes:TheselectiveloggingcouldimprovethegrowthofHeightandDBHofar-tificialforest,andtheintercroppingundertheforestcanpromotethegrowthandecosystembiomass.TheaverageofHeight,DBHandVolumeofartificialforestineachtreatmentshowedZT>Z>CK,amongwhichtheaverageofDBHandVolumeofartificialforestinZTtreatmentweresignificantlyhigherthanCK(<0.05).Thebiomassofeachorganindifferentmanagementmodelsofstandsischaracterizedbystem>root>leaf>branch,andthetotalbiomassofeachorganischaracterizedbyCK>ZT>Z.Thebiomassofthetreelayer,litterlayer,andtotalbiomassintheecosystemareallshownasZT>CK>Z.ThebiomassoftheunderstoryvegetationlayershowsCK>Z>ZT.TheaverageofDBHofar-tificialforestinthe40yearoldforesttreatedwithZTa...
