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Carbon Sequestration Potential f Agroforestry Systems For Phytoremediation In Chinandega, Nicaragua
Mid Sweden University, Faculty of Science, Technology and Media, Department of Ecotechnology and Sustainable Building Engineering. (Ecotechnology group)
Mid Sweden University, Faculty of Science, Technology and Media, Department of Ecotechnology and Sustainable Building Engineering. (Ecotechnology group)
Mid Sweden University, Faculty of Science, Technology and Media, Department of Ecotechnology and Sustainable Building Engineering. (Ecotechnology group)ORCID iD: 0000-0001-5796-6672
Mid Sweden University, Faculty of Science, Technology and Media, Department of Ecotechnology and Sustainable Building Engineering. (Ecotechnology group)ORCID iD: 0000-0002-3204-4089
2018 (English)In: Linnaeus Eco-Tech 2018: 11th International Conference on the Establishment of Cooperation among Companies and Institutions in the Nordic Countries, the Baltic Sea Region and the World / [ed] William Hogland, 2018, p. 211-211Conference paper, Poster (with or without abstract) (Other academic)
Abstract [en]

Greenhouse gases in the atmosphere have increased to earlier unrecorded levels, causing global climate change that increases GMT and threaten ecosystems and livelihoods. IPCC report suggest that agroforestry offers considerable carbon sequestration (c seq.) potential, especially for developing countries. The purpose of this study is to estimate the c seq. potential in different agroforestry systems suitable in Chinandega, Nicaragua - a deforested region where the ground is polluted by toxaphene and other POP:s. Three scenarios where studied; Shading system using Tectona grandis and Pogostemon cablin; Alley cropping using Erythrina poeppigiana and Ricinus communis and Silvopasture using Cordia alliodora and Brachiaria ruziziensis, the last scenario being divided into two subscenarios; unmanaged (grazed) and managed (harvested) grass. Calculations were performed using the modelling program CO2FIX v. 3.2, with a runtime of 100 years and assuming deforested area with no previous land use. Results show a significantly higher c seq. potential in Shading system (168/217 MgC/ha). Alley cropping yields 71 MgC/ha and Silvopasture results in 80/84 MgC/ha unmanaged and 65/70 MgC/ha managed. The higher number includes products from harvest. All scenarios show fluctuations over time due to thinning and harvesting practices. Phytoremediation potential of POPs has been shown in Ricinus communis and grass species. Soil c seq. is especially important to consider in longterm scenarios as this c seq. can be sustained over longer time. The inclusion of crop residue, the effect of grazing animals or changes in density of trees and crops and environmental fate of the toxic compounds need further assessment before considering large scale applications. Agroforestry practices could contribute to several benefits, including climate change mitigation and phytoremediation.

Place, publisher, year, edition, pages
2018. p. 211-211
Keywords [en]
Carbon sequestration, Phytoremediation, Agroforestry, Climate change mitigation
National Category
Environmental Sciences
Identifiers
URN: urn:nbn:se:miun:diva-34949OAI: oai:DiVA.org:miun-34949DiVA, id: diva2:1265851
Conference
Linnaeus Eco-Tech 2018 international conference, Kalmar, November 19-21, 2018
Available from: 2018-11-26 Created: 2018-11-26 Last updated: 2018-12-18Bibliographically approved

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Jonsson, ElisieHaller, HenrikJonsson, Anders

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