Growth, management and soil carbon sequestration modeling on Southern Chile’s agricultural grasslands

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dc.catalogadorpva
dc.contributor.advisorMeza, Francisco Javier
dc.contributor.authorHernández Berrier, Gabriel Renan
dc.contributor.otherPontificia Universidad Católica de Chile. Facultad de Agronomía y Sistemas Naturales
dc.date.accessioned2025-06-26T16:44:16Z
dc.date.available2025-06-26T16:44:16Z
dc.date.issued2025
dc.date.updated2025-06-24T21:52:32Z
dc.descriptionTesis (Master in Naturales Resources)--Pontificia Universidad Católica de Chile, 2025
dc.description.abstractCarbon sequestration is a natural eco-physiological plant process. It sustains primary productivity, implementing crops and forage production. It has become a key tool for climate change mitigation (reducing CO2 concentrations) and for achieving sustainable development objectives defined by the United Nations. This research focusses on soil carbon sequestration in grazing grassland systems. Simulations were run obtaining growth, management and carbon sequestration dynamics of hypothetical southern Chilean grassland simplified systems located in the Entre Lagos region under 10 years periods (2015-2024 and 2030-2039). Climatic and edaphic databases were used in the SIMPLE model for simulations, alongside an extra module allowing modelling of different grazing methods: non-grazing, continuous and rotational grazing managements. Root biomass results were used to simulate soil organic carbon pools and their growth through the RothC model. Afterwards, databases extracted from the Center for Climate and Resilience Science were used for simulations under RCP 8.5 climate change scenario. Results show aboveground primary productivity to be three times bigger under rotational grazing management than continuous management, including a 50% difference in carbon sequestration potential, with rotational grazing achieving 6.66 Mg·ha-1 of total carbon sequestration. Climate change scenarios show increasing productivity at all levels, increasing root biomass in 1.08 Mg·ha-1, enhancing carbon sequestration in 0.47 Mg·ha-1 and achieving a new stocking rate of 2 AU·ha-1.
dc.fechaingreso.objetodigital2025-06-24
dc.format.extent35 páginas
dc.fuente.origenAutoarchivo
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/104766
dc.information.autorucFacultad de Agronomía e Ingenieria Forestal; Meza, Francisco Javier; 0000-0002-9853-227X; 86534
dc.information.autorucFacultad de Agronomía e Ingenieria Forestal; Hernández Berrier, Gabriel Renan; S/I; 1025638
dc.language.isoen
dc.nota.accesocontenido completo
dc.rightsacceso abierto
dc.rights.licenseAtribución-CompartirIgual 4.0 Internacional (CC BY-SA 4.0)
dc.rights.urihttps://creativecommons.org/licenses/by-sa/4.0/deed.es
dc.subjectSoil carbon sequestration
dc.subjectClimate change
dc.subjectGrazing grasslands
dc.subjectSIMPLE model
dc.subjectRothC model
dc.subjectPrimary productivity
dc.subjectStocking rate
dc.subject.ddc600
dc.subject.deweyTecnologíaes_ES
dc.subject.ods13 Climate action
dc.subject.ods07 Affordable and clean energy
dc.subject.ods15 Life on land
dc.subject.odspa13 Acción por el clima
dc.subject.odspa07 Energía asequible y no contaminante
dc.subject.odspa15 Vida de ecosistemas terrestres
dc.titleGrowth, management and soil carbon sequestration modeling on Southern Chile’s agricultural grasslands
dc.typetesis de maestría
sipa.codpersvinculados86534
sipa.codpersvinculados1025638
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