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Uticaj promene načina korišćenja zemljišta na strukturu livadske crnice u zapadnoj Srbiji

dc.creatorGajić, Boško
dc.creatorKresović, Branka
dc.creatorDragović, Snežana
dc.creatorSredojević, Zorica J.
dc.creatorDragović, Ranko
dc.date.accessioned2019-05-16T12:17:51Z
dc.date.available2019-05-16T12:17:51Z
dc.date.issued2014
dc.identifier.issn1450-8109
dc.identifier.urihttp://rik.mrizp.rs/handle/123456789/562
dc.description.abstractChanges in land use can significantly affect aggregate distribution and water stability of structural aggregates. This study was conducted in the Kolubara River Valley, Western Serbia, to determine the effects of land use changes on composition and water stability of aggregates in humus horizons (0-30 cm) of noncarbonated Gleyic Fluvisols. This study was conducted at nine sites, where each site contained two adjacent land uses of natural grassland and arable land which underwent crop rotation for >100 years. Soil samples were taken from depths of 0-10, 10-20 and 20-30 cm for each land use. When the grassland was converted into arable land, the content of the agronomically most valuable aggregates (0.25-10 mm) of cultivated soils for a depth of 0-30 cm was significantly reduced by 22-40%, while the percentage of cloddy aggregates (>10 mm) increased by 41-68%, compared to grassland. In addition, the long-term arable soil had significantly (p lt 0.05) lower aggregate stability, determined by wet sieving, than grassland. The lowest aggregate stability was found in aggregates > 3 mm. Their content is ≈ 2.3 times lower in arable soil (12.6%) than in grassland (28.6%) at a depth of 0-10 cm. In addition, meanweight diameters of dry and wetstable aggregates and structure coefficient showed significant differences between land use at a depth of 0-30 cm. The results showed that the conversion of natural grassland to arable land in the lowland ecosystems of Western Serbia degraded aggregate distribution and stability.en
dc.description.abstractIstraživanja su sprovedena u dolini reke Kolubare da bi se utvrdili efekti promene načina korišćenja zemljišta na agregatni sastav i vodootpornost strukturnih agregata u humusnom horizontu (0-30 cm) beskarbonatne livadske crnice. Izabrano je devet lokacija koje su na bliskom rastojanju imale površine pod prirodnom livadskom vegetacijom i oranice koje su stvorene pre više od 100 godina razoravanjem prirodnih livada. Nakon razoravanja prirodnih livada i njihovog pretvaranja u oranice, sadržaj agronomski najpovoljnijih strukturnih agregata (prečnika 0,25-10 mm) u oranicama na dubini 0-30 cm, značajno je smanjen, za 22-40%, dok je sadržaj grudvastih agregata (>10 mm) povećan za 41-68 %, u poređenju sa livadom. Pored toga, višegodišnje oranice imaju značajno (p lt 0,05) manju vodootpornost strukturnih agregata, određenih mokrim prosejavanjem, od livada. Najmanju vodootpornost pokazali su strukturni agregati prečnika >3 mm. Takođe, prosečni maseni prečnici suvih i vodootpornih agregata i koeficijent strukture pokazali su značajne razlike između različitih načina korišćenja zemljišta na dubini 0-30 cm. Razoravanje livadskih crnica pod prirodnom livadskom vegetacijom istraženog područja i njihova višegodišnja obrada doveli su do značajnih negativnih promena agregatnog sastava i smanjenja vodootpornosti strukturnih agregata.sr
dc.publisherUniverzitet u Beogradu - Poljoprivredni fakultet, Beograd
dc.relationinfo:eu-repo/grantAgreement/MESTD/Integrated and Interdisciplinary Research (IIR or III)/43009/RS//
dc.rightsopenAccess
dc.sourceJournal of Agricultural Sciences
dc.subjectGleyic Fluvisolsen
dc.subjectaggregate distributionen
dc.subjectwater-stable aggregatesen
dc.subjectmean weight diameteren
dc.subjectstructure coefficienten
dc.subjectland useen
dc.subjectsoil tillageen
dc.subjectlivadska crnicasr
dc.subjectagregatni sastavsr
dc.subjectvodootpornost strukturnih agregatasr
dc.subjectprosečni maseni prečniksr
dc.subjectkoeficijent strukturesr
dc.subjectnačin korišćenja zemljištasr
dc.titleEffect of land use change on the structure of Gleyic Fluvisols in Western Serbiaen
dc.titleUticaj promene načina korišćenja zemljišta na strukturu livadske crnice u zapadnoj Srbijisr
dc.typearticle
dc.rights.licenseARR
dc.citation.volume59
dc.citation.issue2
dc.citation.spage151
dc.citation.epage160
dc.citation.other59(2): 151-160
dc.citation.rankM51
dc.identifier.doi10.2298/jas1402151g
dc.identifier.fulltexthttp://rik.mrizp.rs//bitstream/id/2498/560.pdf
dc.type.versionpublishedVersion


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