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©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(1.,410081;2.,100101;3.,712100):4,:,,,:;;:S152.7;S152.5:A:100922242(2006)0320154204EffectofBulkDensityonSoilSaturatedWaterMovementParametersLUDian2qing1,3,SHAOMing2an2,3,LIUChun2ping1,3(1.CollegeofResourcesandEnvironmentScience,HunanNormalUniversity,Changsha410081;2.InstituteofGeographicalSciencesandNaturalResourcesResearch,ChineseAcademyofSciences,Beijing100101;3.StateKeyLaboratoryofSoilErosionandDrylandFarmingontheLoessPlateau,InstituteofSoilandWaterConservation,ChineseAcademyofSciences,Yangling,Shaanxi712100)Abstract:Inthepaper,saturatedmasswatercontentandsaturatedhydraulicconductivityfordifferentbulkdensi2tiesweremeasuredbythemethodoffixingbulkdensityofolefin.Effectsofbulkdensityonthetwoparameterswereanalyzed.Theresultsshowedthatsaturatedmasswatercontentdecreasedwiththeincrementofbulkdensityandwasinversetobulkdensity.Saturatedhydraulicconductivitytendedtodiminishinpowerfunctionwhenbulkdensityincreased.Theresearcheswillprovideappropriatefunctionquantificationallytobuildinnovativeframeonwatermovementtheoryforthesoilwithchangingbulkdensity.Itishelpfultoutilizesoilwaterresourcereason2ably.Keywords:bulkdensity;saturatedwatercontent;saturatedhydraulicconductivity,,,[1,2],,[3,4][5,6],,,,,1(%)(%)(%)(g/cm3)4513938124161732168515183621632115521676213164144331252172681623614754191217201111,2040cm,1[7]112,,,[8]:2005208214:(40371060),:,,1975,,©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.[9],:=mb/w(1):(cm3/cm3);m(g/g);b(g/cm3);w(g/cm3),,,:f=1-b/s(2):f;b(g/cm3);s(g/cm3),,,(1):s=msb/w(3):s(cm3/cm3);ms(g/g),,sf(3)(2):ms=w/b-w/s(4)1g/cm3,(4):ms=1/b-1/s(5)(5),14212,(5),1145513:©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(510),-1%1%2abR019725-013551019886018629-012870019951018900-012976019982019524-013398019931(5),2:ms=a(1/b)+b(6):ms(g/g);b(g/cm3);a,b12,,0198,(6),,,,1,,,213,[9,10],:Ks=QL/AHt(7):Ks(m/s);Q,(m3);A(m2);H,(m);tQ(s),,[10](7),,242,,,,2465120©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.:Ks=ub-w(8):Ks(m/s);u,w3,019,w,,2,3,,4,,:[1],,1[J]1,2003(3):110-114.[2],1[J]1,2003,34(3):225-2281[3],1[J]1,2003,40(3):471-474.[4]BronswijkJJB1ShrinkageGeometryofaheavyclaysoilatvariousstress[J]1SoilSci1Soc.Am1J1,1990,56:1036-10421[5],,,1[J]1,2003,11(3):261-268.[6],,1[J]1,2000,22(4):831-838.[7],1[J]1,1997,17(7):20-26.[8],,1[M]1:,19961130-134.[9],1[M]1:,19881220-261.[10]KluteA1MethodsofSoilAnalysis[M]1USA:Am1Soc1Agron.,19861735-770.153:[1]1[D]1:,20041[2],,,1[J]1,2004,20(3):51-511[3],,1[J]1,2004(4):36-381[4]FanDayong,HanTao,LiJing,GaoRongfu1ProfileofAbsoluteLightUtilizationEfficiencyWithinLeavesofEuonymusJaponicus[J]1ActaBotanicaSinica,2003,45(2):169-1761[5],1[J]1,2007,27(4):7-91[6]MahiSS,McgillWB1NitrificationinThreeAlbertaSoil:EffectofTemperature,MoistureandSubstrateConcentration[J].SoilBiol1Biochem1,1982,15:397-3991[7]SmikaDE,HaasHJ,PowerJF1EffectsofMoistureandNitrogenFertilizeronGrowthandWaterUsebyNativeGrass[J].A2gron1,1978,57:483-4861[8],,1[J]1,2003,17(6):163-1661[9]CarterMR1SoilQualityforSustainableLandManagement,OrganicMatterandAggregationInteractionthatMaintainSoilFunc2tions[J]1Agron1,2002,94(1):38-471[10]1[M]1:,1999.220-2231[11],,,1BGA[A]11[M]1:,2005191-981[12]AlberdaTH.Theinfluenceofreservesubstancesondrymatterproductionafterdefoliation[A].Proceedingsofthe10thInter2nationalGrasslandCongress[C].Finland:theUniversityofHelsinki,1966.140-147.[13]HumphriesEC1Effectsofremovalofpartofarootsystemonsubsequentgrowthoftherootandshoot[J]1AnnualBotanicaFen2nica,1968,22:251-257.7513: