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1、林业科学研究2006,19(3):347～352ForestResearch文章编号:100121498(2006)0320347206长白山阔叶红松林林隙与林下土壤性质对比研究3张春雨,赵秀海,郑景明(北京林业大学省部共建森林培育与保护教育部重点实验室,北京100083)摘要:对长白山阔叶红松林林隙与林下物种组成、物种多样性和土壤理化性质进行了对比研究。结果表明:林隙与林下物种组成及物种多样性不同。林隙中幼苗层树种多样性增大而群落优势度减小,幼树层树种多样性减小而群落优势度增大。由于资源和空间利用的有效性发生改
2、变,导致林隙中的土壤和凋落物的理化性质也出现差异。林下地表凋落物厚度、现存量及凋落物含水量均显著高于林隙(p<0.01),林隙中凋落物全N、全K含量分别比林下高10.47%和20.73%,而林下全P和有机C含量分别比林隙高15.23%和12.66%。林隙中0～10cm和10～20cm土壤含水量分别比林下高17.65%和16.17%。林下0～10cm土壤密度略高于林隙,而10～20cm土壤密度基本无差异。林隙与林下土壤pH值分别为5.80和5.85,二者差异不大。林隙土壤有机质、全N、全K含量分别比林下高12.85
3、%、7167%和2.38%,而林下铵态N、有效P、速效K、全P含量分别比林隙高13.33%、20.04%、16.52%和4.30%。关键词:阔叶红松林;林隙;凋落物;土壤性质中图分类号:S718文献标识码:AAStudyonSoilPropertiesinForestGapsandunderCanopyinBroad2leavedPinuskoriensisForestinChangbaiMountainZHANGChun2yu,ZHAOXiu2hai,ZHENGJing2ming(KeyLaboratoryfo
4、rSilvicultureandConservationofForest,MinistryofEducation,BeijingForestryUniversity,Beijing100083,China)Abstract:Thespeciescomponents,speciesdiversitiesandsoilpropertiesingapandundercanopyinbroad2leavedPinuskoriensisforestsinChangbaiMountainswerestudied.Theres
5、ultsofthestudyindicatedthatthespeciescomponentsandspeciesdiversitiesingapweredifferentfromthoseundercanopy.TheShannon2Wienerindex,evennessindexandabun2danceindexingapwerehigherthanthoseundercanopyinseedlinglayer,whilethecommunitydominanceinseedlinglay2erincre
6、aseedinclosedcanopy.Thephysico2chemicalpropertiesofsoilandlitterchangedwithspaceandresourcesuseful2nessingaps.Thethickness,stockandwaterholdingcapacityoflitterlayerundercanopyweresignificantly(P<0.01)higherthanthoseingap.Thecontentoftotalnitrogenandtotalpotas
7、siumoflitteringapwere10.47%and20.73%high2erthanthoseundercanopy,butthecontentoftotalphosphorusandorganiccarbonundercanopywere15.23%and12166%morethanthoseingap.Thewatercontentof0～10cmand10～20cmofsoillayeringapwere17165%and16117%morethanthoseundercanopy,thesoil
8、bulkdensityof0～10cmwasslightlyhigherundercanopythanthatingap,buttherewasnoapparentdifferenceinthesoilbulkdensityof10～20cm.ThesoilpHwere5.80and5.85ingapandundercanopyrespectively,anditwasn
