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Volatile organic compound emission and biochemical properties of degraded Ultisols ameliorated by no tillage and liming

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Pedosphere 2020年第5期30卷 597-606页

作者： Laura GIAGNONI Cosimo TAITI Paloma LEON Corrado COSTA Paolo MENESATTI rafael espejo Clara GOMEZ-PACCARD Chiquinquira HONTORIA Eduardo VAZQUEZ Marta BENITO Stefano MANCUSO Giancarlo RENELLA Department of Agriculture FoodEnvironment and Forestry(DAGRI)University of FlorenceP.le delle Cascine 18Florence 50144(Italy) Departamento de Production Agraria E.T.S.I.AgrondmicaAlimentaria y de BiosistemasUniversidad Politecnica de MadridAvda.Complutense s/nMadrid 28040(Spain) Consiglio per la Ricerca in Agricoltura e I'Analisi dell'Economia Agraria(CREA)-Unita di Ricerca per ilngegneria Agraria via della Pascolare 16Monterotondo ScaloRM 00015(Italy) Department of Soil Biogeochemistry and Soil Ecology University of BayreuthDr.Hans-Frisch-Strafie 1-3Bayreuth 95448(Germany) University of Padua Department of AgronomyFoodNatural ResourcesAnimals and Environment(DAFNAE)Viale dell'Universita 16Legnaro 35020(Italy)

TTie Ultisols in the Rana de Canamero area in Southwest Spain showed aluminum(Al)phytotoxicity,and the clearance of natural vegetation and decades of intensive conventional agriculture caused the deplation of soil organic matter(SOM).Therefore,we studied the long-term effects of no tillage and liming using sugar beet foam(SF)and red gypsum(RG),alone or in combination,on the restoration of Ultisols affected by acidification,Al phytotoxicity,and SOM *** measured the main soil chemical properties,soil microbial biomass,soil enzyme activities involved in carbon,nitrogen,phosphorus,and sulfur mineralization,and the emission of volatile organic compounds(VOCs).The results indicated that liming effectively neutralized the soil acidity in the long term and,in combination with no tillage,significantly increased soil microbial biomass and enzyme ***-three VOCs were detected using the proton transfer reaction-time of flight(PTR-ToF)technique,and both liming and tillage changed the VOC emission *** greatest difference in VOC emission pattern was observed between no-tilled un-amended soils and tilled lime-amended soils,suggesting the activation of different metabolic pathways within the microbial communities of soils under different *** in VOC emission patterns could be attributed to the decomposition of carbohydrates,which were also sustained by the higher enzyme activities in the lime-amended soils.

关键词： carbohydrate decomposition degraded soils long-term field trial soil acidity soil enzyme activities soil microbial biomass soil restoration

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