ORIGINAL PAPER
Carbon sequestration and soil quality in different land uses in the Ramsar Wetland La Cocha, Colombia
1
Universidad Nacional de Colombia, Sede Medellín, Facultad de Minas, Departamento de Geociencias y Medioambiente, Carrera 80 No 65-223, Bloque M2, Office 312, Campus Robledo, 050036, Medellín, Colombia
2
Centrum Badań Obszarów Tropikalnych, University of Agriculture in Krakow, Aleja Mickiewicza 21, 31-120, Kraków, Polska
3
3Agrosavia, Research Center La Selva, Km 7, vía Rionegro, Las Palmas, Sector Llanogrande, 054040, Rionegro, Antioquia, Colombia
4
Universidad Mariana, Engineering Faculty, Environmental Department, Cl 18 #34 - 104, 520002, Pasto, Nariño, Colombia
Submission date: 2025-06-19
Final revision date: 2026-02-16
Acceptance date: 2026-05-11
Online publication date: 2026-05-11
Publication date: 2026-05-11
Corresponding author
Juan Carlos Loaiza-Usuga
Research Center La Selva, Agrosavia, Km. 7, vía Rionegro - Las Palmas, 054040, Rionegro, Colombia
Research Center La Selva, Agrosavia, Km. 7, vía Rionegro - Las Palmas, 054040, Rionegro, Colombia
Soil Sci. Ann., 2026, 77(1)221664
KEYWORDS
ABSTRACT
Soil composition (in terms of mineral and organic materials) and its functions are conditioned by soil pedogenetic processes. Consequently, soil acts as a natural body that interacts with the environment, thereby determining the efficiency of physical, chemical, and biological processes. In Andisols, soil organic matter plays a crucial role in the soil composition and processes, directly affecting soil health and overall soil quality. To determine the dynamics of organic matter in a Hydric Pachic Melanudands (Soil Survey Staff, 2022) / Andosol (IUSS Working Group WRB, 2022) under grassland (Pennisetum clandestinum), potato (Solanum tuberosum), and Andean paramo (Espeletia sp.), soil physical, chemical, and biological properties were evaluated. The evaluated soil quality indicators were: bulk density (BD), total porosity (TP), aggregate stability (AS), soil organic matter (SOM), pH, available phosphorus (AP), total nitrogen (TN), cation exchange capacity (CEC), microbial biomass (MB), and basal respiration (BR). The proposed soil parameters were measured at three sampling depths (0–5, 5–15, and 15–30 cm) with three repetitions by land use. Under the studied soil conditions, non-organic amendments and fertilizers significantly influenced (p ≤ 0.01) AP, TN, CEC, TP, MB, and BR. SOM was linked to the availability of nutrients (p < 0.01) as well as to the functioning of the pore space (TP p<0.01). Land use in La Cocha wetlands affects environmental conditions, which, in turn, influence the dynamics of SOM. The anthropic activities that should be maintained in the paramo ecosystems re-evaluate those that modify the physical processes in the soil; through implementation of management, conserve ecosystem services associated with soil quality.
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