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1、广东省蕉岭长潭省级自然保护区表层土壤物性的研究林义辉张苏俊邓永林曾锋(广东省林业局,广州510520)摘要：通过对广东省蕉岭长潭省级自然保护区针阔混交林、马尾松林、杉木林、毛竹林、阔叶混交林等五种不同森林类型土壤理化性质状况的比较，研究了不同森林类型对土壤肥力状况的影响。结果衣明：(1)广东省蕉岭长潭省级自然保护区表层表土呈酸性，石砾含I:壤容重、总孔隙度、毛管孔隙度和菲毛管孔隙度,自然含水量、最大持水量、最小持水量分别为为4.0%、1.llg/cm58.01%、37.73%、20.28%和296.02g
2、/kg、442・95g/kg、321.38g/kg；土壤阳离子交换量为5.99cmol(+)/Kg〜8.20cmol(+)/Kg,电导率为57.87〜97.44,全氮、碱解氮、全磷、速效磷和速效钾分别为1.88g/kg.105.20mg/kg.0.19g/kg、2.22mg/kg和130.53mg/kg(2)不同林分类型，其土壤容重、最大持水量、全N、碱解氮、速效钾等也不相同，但土壤pH值、全P、有机P在不同林分类型间等差异不显著。其中，阔叶混交林与针阔混交林的土壤容重、最大持水最有显著差异(P=0.021
3、,p=0.022),阔叶混交林、针阔混交林与马尾松林的全N、碱解氮、速效钾显著差异(p=0.026,p=0.032)。(3)从土壤理化性状來看，阔叶混交林、毛竹林的土壤质暈利肥力要比马尾松林和杉木林好。关键词：广东省蕉岭长潭省级自然保护区林分类型；土壤理化性质中图分类号：Q94&15文献标识码：A文章编号：TopsoilphysicalandchemicalpropertiesofdifferForestTypesinGuangdongJiaoLingChangtanProvincialNaturalRes
4、erveLinYihuiZhangSujunDengYonglinZengFeng(ForestryAdministrationofGuangdong,Guangzhou510173,China)Abstract：Impactsofdifferentforesttypeonsoilfertilityinthesubtropicalforestecosystemswerestudiedbycomparingthephysicalandchemicalpropertiesofsoilofbroadleavedm
5、ixedforest,Pinusmassomanastand,Cunninghamialanceolatastand,Phyllostachysedulisforest,aswellasmixedbroadlcaf^conifcrforestinGuangdongJiaoLingChangtanProvincialNaturalReserve.Resultsindicatedthat：(l)Thesoilwasacid,thecontentofrockfragment,soilbulkdensitieswe
6、re4.0%」.11g.cm巳soiltotalporositieswere58.01%,ofwhichthesoilnon-capillaryporositiesandcapillaryporositieswere37.73%,20.28%；soilmoisture,maximumcapillarycapacityandminimumcapillarycapacitywere296.02g/kg^442.95g/kg>321.38g/kg,respectively,withthecationexchang
7、ecapacity,electricalconductivitywere5.99cmol(+)/Kg〜8.20cmol(+)/Kg,57・87〜97.44andtotalNwere1.88g/kg,availablenitrogenwere105.20mg/kg,totalPwere0.19g/kg,availablePwas2.22mg/kg,availableKwas130.53mg/kg.(2)itisvariousinthedifferentforesttypethatissoilrockfragm
8、ent,soilbulkdensities,maximumcapillarycapacity,totalN,availablenitrogen,availableKbuttherearenodifferenceinsoilPhvalue,totalPandavailableP,whilethereweresignificantlydifferenceinsoilrockfragment,soilbulkdensi
