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

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 

机构地区：[1]Department of Agriculture,Food,Environment and Forestry(DAGRI),University of Florence,P.le delle Cascine 18,Florence 50144(Italy) [2]Departamento de Production Agraria,E.T.S.I.Agrondmica,Alimentaria y de Biosistemas,Universidad Politecnica de Madrid,Avda.Complutense s/n,Madrid 28040(Spain) [3]Consiglio per la Ricerca in Agricoltura e I'Analisi dell'Economia Agraria(CREA)-Unita di Ricerca per ilngegneria Agraria,via della Pascolare 16,Monterotondo Scalo,RM 00015(Italy) [4]Department of Soil Biogeochemistry and Soil Ecology,University of Bayreuth,Dr.Hans-Frisch-Strafie 1-3,Bayreuth 95448(Germany) [5]University of Padua,Department of Agronomy,Food,Natural Resources,Animals and Environment(DAFNAE),Viale dell'Universita 16,Legnaro 35020(Italy)

出　　处：《Pedosphere》2020年第5期597-606,共10页土壤圈（英文版）

基　　金：We are grateful to the Comunidad de Madrid(Spain)and European Structural and Investment Funds for the financial support(No.AGRISOST-CM S2013/ABI-2717)to maintain the field experiment.

摘　　要：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 depletion.We 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 activities.Twenty-three VOCs were detected using the proton transfer reaction-time of flight(PTR-ToF)technique,and both liming and tillage changed the VOC emission patterns.The 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 management.Differences 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 

分 类 号：S156[农业科学—土壤学] S154.2[农业科学—农业基础科学]