Relación carbono nitrógeno en el suelo de plantaciones de Inga edulis “guaba” de diferentes edades en Varillal seco, Nina Rumi, Loreto-Perú, 2024

• Autor: Huayunga Molaconcha, Jose Manuel
• Formato: tesis de grado
• Fecha de Publicación: 2025
• Institución: Universidad Nacional De La Amazonía Peruana
• Repositorio: UNAPIquitos-Institucional
• Lenguaje: español
• OAI Identifier: oai:repositorio.unapiquitos.edu.pe:20.500.12737/12652
• Enlace del recurso: https://hdl.handle.net/20.500.12737/12652
• Nivel de acceso: acceso abierto
• Materia: Plantaciones inga edulis; Relación C/N; Varillal; Suelos degradados; https://purl.org/pe-repo/ocde/ford#4.01.02

This study demonstrates that Inga edulis plantations in dry, dry-stem soils in the Nina Rumi-Nanay River area contribute positively to the accumulation of organic carbon and nitrogen compared to natural forest. The results show that young plantations, especially at 2 years of age, have the highest values of carbon in the surface layer (2.326% at 10 cm) and total nitrogen (0.120–0.144%), highlighting the species' potential for improving soil fertility through litter production. A decreasing gradient with depth was identified for both nutrients, with the highest concentrations concentrated in the top few centimeters of the soil, while the natural forest showed the lowest values, reflecting the low intrinsic fertility of the dry-stem soils. In relation to soil stoichiometry, the C/N ratio remained high and stable (≈19) in the Inga edulis plantations, in contrast to the natural forest, which presented lower values (≈13), indicating limitations in nitrogen availability. Analysis of variance confirmed that plantation age was the most influential factor on the C/N ratio (p < 0.0001); however, the Age–Depth interaction (p = 0.0002) revealed that the effects of age on the C/N ratio were not expressed homogeneously throughout the soil profile. These results demonstrate the potential of Inga edulis as a keystone species in restoring and improving the quality of degraded dry swale soils, contributing to both carbon accumulation and nitrogen availability in the ecosystem.