Microbial enzymatic stoichiometry and the acquisition of C, N,and P in soils under different land-use types in Braziliansemiarid  

作　　者：Erika Valente de Medeiros Érica de Oliveira Silva Gustavo Pereira Duda Mario Andrade Lira Junior Uemeson Josédos Santos Claude Hammecker Diogo Paes da Costa Fabio Fernando Araujo Arthur Prudêncio de Araujo Pereira Lucas William Mendes Ademir Sergio Ferreira Araujo 

机构地区：[1]Laboratory of Microbiology and Enzymology-LEMA,Federal University of Agreste Pernambuco,Garanhuns 55292-270,Brazil [2]Federal Rural University of Pernambuco,Rua Dom Manuel de Medeiros,s/n,Dois Irmãos,52171-900,Recife,Brazil [3]Soil-Agrosystem-Hydrosystem Interaction Lab-LISAH,Place Pierre Viala,2,34060 Montpellier,France [4]Universidade do Oeste Paulista,Presidente Prudente,SP,Brazil [5]Departamento de Ciência Do Solo,Universidade Federal Do Ceará,Fortaleza,CE,Brazil [6]Center for Nuclear Energy in Agriculture,University of Sao Paulo,Piracicaba,SP,Brazil [7]Soil Quality Lab,Agricultural Science Center,Federal University of Piauí,Teresina,PI 60049-550,Brazil

出　　处：《Soil Ecology Letters》2023年第3期101-108,共8页土壤生态学快报（英文）

基　　金：The authors thank fellowships and grants from CNPq(306401/2015-0,483287/2013-0,401896/2013-7,306980/2013-4,305069/2018-1,323422/2021-8,307670/2021-0);CAPES and FACEPE(APQ-0223-5.01/15,APQ-0419-5.01/15,APQ-0453-5.01/15).

摘　　要：This study hypothesized that different land-use affect the microbial enzymatic stoichiometry and C-,N-,and P-acquisition in Brazilian semiarid soils.Thus,the enzymesβ-glucosidase(C-acquiring enzyme),urease(N-acquiring enzyme),and acid phosphatase(P-acquiring enzyme)were assessed in soil samples collected at 0−5 and 5−10 cm depth from a tropical dry forest,a protected area with Angico,a protected area with Ipê,scrub area,and an agricultural area with maize.The values of C-,N-,and P-acquiring enzymes were used to calculate the enzymatic C:N,C:P,and N:P ratios.The values of C:P and N:P ratios were higher at 0−5 cm depth,while no significant variation,between soil depth,was observed for C:N ratio.The values of C-and N-acquiring enzymes were higher at 0−5 cm in tropical dry forest areas and Angico forest,respectively.In all land use types,the values of vectors L and A were higher than 1°and 45°,respectively.This study showed that both land-use and soil depth influence the enzymatic stoichiometry,showing higher values of C-and N-acquiring enzymes in native and protected forests at soil surface.

关 键 词：C:N:P stoichiometry tropical forests soil depth LUVISOLS 

分 类 号：S15[农业科学—土壤学]