02081nab a2200301 i 4500 BR-BrBNA 20260422190235.0 260422b2019 bl.qr|pooa||| 00| 0 eng | BR-BrBNA eng P34 P33 Cruz, Lised Guaca Bastidas, Amara Tatiana Contreras Suárez, Leonardo Rodríguez Salazar, Juan Carlos Suárez Microbial Properties of Soil in Different Coverages in the Colombian Amazon Publicação on-line; 39 ref.; 3 tables; 2 illus.; Summary (En) ABSTRACT Changes in coverage affect the activity of soil’s microbial communities, affecting the carbon and nitrogen cycle. The variability of biochemical properties in different coverages (native forest, forest plantation, silvopastoral system and pasture) located in the northwest of the Colombian Amazon was evaluated. Edaphic properties were determined as: organic carbon (OC), total nitrogen (TN), microbial biomass carbon (MBC) and microbial biomass nitrogen (MBN) using the fumigation method. A significant effect was found to land use × depth interaction for the variables moisture, pH, CO and MBC/OC ratio (p < 0.05), while MBC and dCO2 showed differences only for land use and NT, MBN and MBN/TN ratio at depth (p < 0.05). In general, when modifying the soil cover, changes were made in the chemical properties that affected the microbial activity. Keywords: fumigation, CO2 emissions, multivariate analysis, structural equations modeling. FUMIGAÇÃO DIÓXIDO DE CARBONO CARBONO MÉTODO ESTATÍSTICO MICROBIOLOGIA DO SOLO 2929 347953 Rio de Janeiro-RJ Instituto de Florestas - UFRRJ 1994 2025-0452 Floresta e Ambiente (Brazil) 1415-0980 / ISSN 2179-8087 0nline v. 26(4) p. 1-8; (2019) BR2026001258 https://www.scielo.br/j/floram/a/ZTDs878rhQstzmzj889f6zD/?format=pdf&lang=en ANA 341517 341517