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Uticaj procesa izluživanja na sastav humusa u rendzinama Srbije

dc.creatorCupać, Svjetlana
dc.creatorDjordjević, Aleksandar
dc.creatorTomić, Zorica
dc.date.accessioned2020-12-17T19:10:22Z
dc.date.available2020-12-17T19:10:22Z
dc.date.issued2008
dc.identifier.issn0514-6658
dc.identifier.urihttp://aspace.agrif.bg.ac.rs/handle/123456789/1653
dc.description.abstractThe effect of decarbonation on group and fractional composition of humus in rendzina soils was investigated in 24 profiles of calcaric and 9 profiles of non-calcaric rendzina soils in different parts of Serbia that are characteristic of that soil type. One or two samples, depending on soil depth, were collected from horizon A and one from each transitional AC horizon in profiles where the AC horizon has developed. The more alkaline the soil pH is in highly and very highly calcareous profiles, the greater is increase in mobile fractions and decrease in stable fractions of humic and fulvic acids. Decarbonation was found to have a sig­nificant statistical effect on the fractional composition of fulvic acids (the content of their mobile fractions la and 1 increased, while fraction 3 de­creased), and the content of mobile humus (sum 1) increased, while stable humus content decreased (sum 2). However, stable humus was still found to account for over 80% even in non-calcaric rendzinas. The process of decar­bonation was not found to affect the group composition and type of humus, or the fractional composition of humic acids.en
dc.description.abstractIstraživanja uticaja procesa izluživanja na grupni i frakcioni sastav humusa u rendzinama obuhvatila su 24 profila karbonatne i 9 profila izlužene rendzine iz raznih delova Srbije karakterističnih za ovaj tip zemljišta. Iz A horizonta uzet je jedan ili dva uzorka, zavisno od dubine, i po jedan uzorak iz prelaznog AC horizonta, u profilima koji su imali razvijen AC horizont. Rezultati su pokazali da što je hemijska reakcija zemljišta alkalinija, u jako i veoma jako karbonatnim profilima rendzina Srbije, dolazi do povećanja udela mobilnih, a smanjenja udela stabilnih frakcija huminskih i fulvo kiselina. Proces izluživanja (ispiranje CaCO3, niži pH i stepen zasićenosti bazama) u zemljištima tipa rendzina u Srbiji statistički je značajno uticao na frakcioni sastav fulvo kiselina (povećao se sadržaj mobilnih frakcija fulvo kiselina - la i 1, a smanjio sadržaj frakcije 3 fulvo kiselina) i došlo je do povećanja sadržaja mobilnog dela humusa (zbira 1), a smanjio se udeo stabilnog dela humusa (zbira 2). Proces izluživanja doveo je do ispiranja baza, povećavanja kiselosti zemljišta odnosno smanjenja stepena njegove zasićenosti baznim katjonima. Novonastali uslovi uticali su na povećanje udela mobilnog humusa, odnosno na smanjenje stabilnosti humusa u izluženim rednzinama. Ipak, proces izluživanja spustio je reakciju zemljišta u izluženim rendzinama samo do srednje kisele, a zasićenost bazama je još uvek visoka, tako da i dalje preovlađuje stabilni deo humusa, u proseku sa preko 80%. Proces izluživanja nije značajno uticao na grupni sastav i tip humusa, kao i frakcioni sastav huminskih kiselina.sr
dc.publisherUnija bioloških naučnih društava Jugoslavije, Beograd
dc.rightsopenAccess
dc.rights.urihttps://creativecommons.org/licenses/by-sa/4.0/
dc.sourceZemljište i biljka
dc.subjectcalcaric and non-calcaric rendzina soilsen
dc.subjectgroup and fractio­nal compositionen
dc.titleThe effect of decarbonation on humus composition in Serbian rendzina soilsen
dc.titleUticaj procesa izluživanja na sastav humusa u rendzinama Srbijesr
dc.typearticle
dc.rights.licenseBY-SA
dc.citation.epage77
dc.citation.issue2
dc.citation.other57(2): 69-77
dc.citation.spage69
dc.citation.volume57
dc.identifier.rcubconv_1222
dc.identifier.rcubhttps://hdl.handle.net/21.15107/rcub_agrospace_1653
dc.type.versionpublishedVersion


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