Soil Aggregate Stability(16)

土壤团聚体的经典文章

Research,Reviews,Practices,PolicyandTechnology97

(Rasiahobservedet(Kemperthatal.,1992;structuralCaronstabilityetal.,1992b;increasedWattswithetal.,increasing1996a),whereaswatercontentothersCaronandRosenau,1986;MonroeandKladivko,1987;Angers,1992;ofal.,anAnetal.,1996).

aggregateincreaseintothethedisruptinginitialwatercontentconditionincreasestheresistance(1993b)1989;andnotedGollanythatetaal.,positive1991;relationshipLeforcesBissonnais(Trumanetal.,1990;LeBissonnaisetbetweenandsinger,macro-aggregate1992).Angersetal.(directsoilwatercontentisobservedwhentheaggregatesareallowedstabilitytoslakeexistsminimizedwhenimmersiontheaggregatesofdry-aggregatesarewettedinunderwater),whereasanegativecorrelationthatslakingstresses.LeBissonnaisandvacuumSingeror(1992)tensionalsoandthereforeobservedstabilitythedueisapparentduetopositiveeffectofincreasingwatercontentonaggregateaggregates,tothefactductionsothatareductioninslaking,whiletheapparentnegativeeffectiswetshearaggregatesstrengthareofwetaggregatesislowerthanthatofdryattributedintionbycohesiveWattsstrengthetal.(1996a)ofallparticlelessresistantinparttobondstoraindropimpact.There-osmoticathighereffectswatercontentswas(1994)ofstabilizingmaterial.Shainbergetal.(1992a)andReichertplustheanddissolu-NortonandtheaddedclaysurfacesthatformakessmectiticsoilsthehydrationofexchangeablecationsisTherelationshipbetweenwetstructuralaggregatesstabilityweakerparametersthandryandaggregates.watercontentAggregatecomplexnalstabilitybecauseisdifferentafunctionprocessesinteractoverdifferenttimescales.ruptivebondwaterforcesstrengthfromwithinrapidthewettingaggregateofbothareinversely(Gollanyexternaldisruptiverelatedetal.,forcesandinter-to1991).theantecedentExternaldis-soilwatercontent.resistantcontent.InternalthetoslakingWithevengreaterforcesbindingaggregatesarealsoinverselyrelatedtothoughsoilcohesionwatercontent,isreduced.soilAggregateaggregatesaremorebetweenresultofthebalanceofbothtendencies.Inaddition,therelationshipstabilityistory,Kaysoilaggregatetypeetc.Kemperstabilityetandwatercontentisdependentoncroppinghis-moderate(1992)pullsoilobservedwatertensions,thatmaximumal.(1987),probablyratesDexteretal.(1988),andCaronandbecauseofcohesionsomerecoverytensionisoccurredneededatessentialtheparticlesintodirectcontact,butacontinuouswaterphaseisalsoto(1988),optimumDextertoallowetdiffusional.(1988),ofbondingagentstothecontactpoints.DexterLimitwatercontentforthixotropicandWattshardeningetal.(1996a)ismentionedthatthe(1996a)In(PL)addition,ofthearoundthelowerPlasticEmersonsoil.

(1967),KayandDexterwatercontent.addedthatTheythefounddispersivethattherebehaviorisaofcriticalsoils(1990)isminimumalsoaandfunctionWattsetal.watercontent

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