不同森林植被下土壤微生物量碳和易氧化态碳的比较.pdfVIP

维普资讯 林业科学研究 2006，19(4)：523～526 ForestResearch 文章编号：1001—1498(2006)04-0523-04 不同森林植被下土壤微生物量碳和易氧化态碳的比较 朱志建 ，姜培坤 ，徐秋芳 (1．浙江省湖州市林业局，浙江 湖州 313000；2．浙江林学院环境科技学院，浙江 临安 311300) 关键词 ：森林土壤；总有机碳；微生物量碳；易氧化态碳 中图分类号：$714 文献标识码：A StudyontheActiveOrganicCarbon inSoil underDifferentTypesofVegetation ZHUZhi-jian，JIANGPei．kun2，XUQiu-fang2 (1．HuzhouFomstryBureau，Huzhou 313000，Zh~iang，China；2．ZhejiangForestryCollege，Lin’811 311300，Zheim g，Clli】M) Abstracts：Soilsunderbroad-leaved，massonpine，ChinesefirandbambooforestsintheareaofHuzhou，Zhejinag werecollectedandnaalyzedinJnauary2000．Soiltotalorgnaiccarbon(TOC)underbroad．1eavednadbambooofr- 静 estswereconsideratelyhigherhtna (P0．01)htoseundermassonpinenadChinesefir．Therewasnosignificnat differencesinmicrobialbiomasscarbon(MBC)insoilsamongvarioustypesofvegetation，however，htebamboo standsconstitutedalower(P0．05)proportionofMBCcomparedwihtbroad-leavedforest，massonpinenadChi- nesefirweresimilarinMBC toTOC，indicatinghtatintensivemnaagementinbamboostandreducedhteproportion ofsoilMBC inTOC．MBC insoilsunderbroad-leavde forest，massonpineforestnadChinesefirforesthadstrong positiverelationshipswithhtecorrespondingTOCs，htecorrelationcoefficients wererespective0．7444，0．6484 nad0．5521．Itwasfoundhtatsoileasilyoxidizablecrabon(EOC)inbambooforestWasmuchhihgerhtna htosein hteohter3forests．ThehihgerpercentagesofEOCweredetectde fromsoilsunderbambooforest(52．4o％)nad Chinesefirforest(50．50％)comparedwihtbroad-leavedforest(48．90％)nadmassonpineforest(45．74％)．Soil EOCforall4forestswerecloselycorrelated(P0．01)wihthtecorrespondentTOCs． Keywords：forestsoil；soiltotalorgnaiccrabon(TOC)；microbialbiomasscrabon(MBC)；easilyo