The State of Soil Degradation in Sub-Saharan Africa: Baselines, Trajectories, and Solutions

dc.contributor.authorTully, Katherine
dc.contributor.authorSullivan, Clare
dc.contributor.authorWeil, Ray
dc.contributor.authorSanchez, Pedro
dc.date.accessioned2024-01-11T21:34:16Z
dc.date.available2024-01-11T21:34:16Z
dc.date.issued2015-05-26
dc.description.abstractThe primary cause of soil degradation in sub-Saharan Africa (SSA) is expansion and intensification of agriculture in efforts to feed its growing population. Effective solutions will support resilient systems, and must cut across agricultural, environmental, and socioeconomic objectives. While many studies compare and contrast the effects of different management practices on soil properties, soil degradation can only be evaluated within a specific temporal and spatial context using multiple indicators. The extent and rate of soil degradation in SSA is still under debate as there are no reliable data, just gross estimates. Nevertheless, certain soils are losing their ability to provide food and essential ecosystem services, and we know that soil fertility depletion is the primary cause. We synthesize data from studies that examined degradation in SSA at broad spatial and temporal scales and quantified multiple soil degradation indicators, and we found clear indications of degradation across multiple indicators. However, different indicators have different trajectories—pH and cation exchange capacity tend to decline linearly, and soil organic carbon and yields non-linearly. Future research should focus on how soil degradation in SSA leads to changes in ecosystem services, and how to manage these soils now and in the future.
dc.description.urihttps://doi.org/10.3390/su7066523
dc.identifierhttps://doi.org/10.13016/dspace/jx8x-zlce
dc.identifier.citationTully, K.; Sullivan, C.; Weil, R.; Sanchez, P. The State of Soil Degradation in Sub-Saharan Africa: Baselines, Trajectories, and Solutions. Sustainability 2015, 7, 6523-6552.
dc.identifier.urihttp://hdl.handle.net/1903/31576
dc.language.isoen_US
dc.publisherMDPI
dc.relation.isAvailableAtCollege of Agriculture & Natural Resourcesen_us
dc.relation.isAvailableAtPlant Science & Landscape Architectureen_us
dc.relation.isAvailableAtDigital Repository at the University of Marylanden_us
dc.relation.isAvailableAtUniversity of Maryland (College Park, MD)en_us
dc.subjectsoil degradation
dc.subjectsub-Saharan Africa
dc.subjectbaselines
dc.subjectindicators
dc.subjectsustainability
dc.subjectresilience
dc.titleThe State of Soil Degradation in Sub-Saharan Africa: Baselines, Trajectories, and Solutions
dc.typeArticle
local.equitableAccessSubmissionNo

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