01981nab a2200265 i 4500003000900000005001700009008004100026040001800067072000800085072000800093100002300101100003900124100003600163100003500199245008000234500007000314520096100384650001801345650002501363650001201388650002701400650002601427773018101453856008101634BR-BrBNA20260422190235.0260422b2019    bl.qr|pooa||| 00| 0 eng |  aBR-BrBNAbeng  aP34  aP33  aCruz, Lised Guaca   aBastidas, Amara Tatiana Contreras   aSuárez, Leonardo Rodríguez   aSalazar, Juan Carlos Suárez   aMicrobial Properties of Soil in Different Coverages in the Colombian Amazon  aPublicação on-line; 39 ref.; 3 tables; 2 illus.; Summary (En)  a

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.  aFUMIGAÇÃO  aDIÓXIDO DE CARBONO  aCARBONO  aMÉTODO ESTATÍSTICO  aMICROBIOLOGIA DO SOLO0 02929dRio de Janeiro-RJ Instituto de Florestas - UFRRJ 1994o2025-0452tFloresta e Ambiente (Brazil)x1415-0980  /  ISSN 2179-8087 0nlinegv. 26(4) p. 1-8; (2019)wBR2026001258  uhttps://www.scielo.br/j/floram/a/ZTDs878rhQstzmzj889f6zD/?format=pdf&lang=en