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Title: Comparison of nonlinear models in the description of carbon mineralization in litter soil
Other Titles: Comparação de modelos não lineares na descrição da mineralização de carbono em solo de serapilheira
Keywords: Nutrient cycling
Carbon dioxide
Forest soil
Ciclagem de nutrientes
Dióxido de carbono
Solo florestal
Issue Date: Dec-2020
Publisher: Instituto Federal de Educação, Ciência e Tecnologia do Sul de Minas Gerais - IFSULDEMINAS
Citation: SILVA, E. M. et al. Comparison of nonlinear models in the description of carbon mineralization in litter soil. Revista Agrogeoambiental, Pouso Alegre, v. 12, n. 4, dez. 2020. DOI:
Abstract: Litter is an important source of nutrients for trees and can improve the quality of degraded soils. The objective of this study was to describe the dynamics of carbon mineralization in litter soils using nonlinear models, estimating half-life times. Soil carbon mineralization under three types of forest cover was evaluated: Atlantic forest fragment (capoeira), Acacia auriculiformis trees (acacia), and Mimosa caesalpiniifolia (sabiá) from a reforested area with a history of degradation. Twelve measurements of the mineralized carbon were made up to 222 days after the beginning of the incubation of litter soils. Stanford and Smith, Juma, and Cabrera models were fitted by the least squares method using the Gauss-Newton algorithm in the R software. The Stanford and Smith model was more appropriate in describing all treatments, based on the Akaike Information Criterion, with estimates of half-life for Acácia, Capoeira, and Sabiá soils at 25, 44, and 51 days, respectively. The Stanford and Smith and Juma nonlinear models satisfactorily described the carbon mineralization of soils of all treatments.
Appears in Collections:DES - Artigos publicados em periódicos
DEX - Artigos publicados em periódicos

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