Is land being degraded? A multi-scale investigation of landscape change in southwestern Burkina Faso

Gray, L. E.

doi:10.1002/(sici)1099-145x(199907/08)10:4<329::aid-ldr361>3.0.co;2-i

Cited by 95 publications

(58 citation statements)

References 19 publications

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“…Both the balance of different nutrients and their chemical forms are also important to soil fertility [76,77]. Population pressures in some countries have reduced or eliminated natural fallow periods, reducing nutrient and organic matter inputs [3,78,79] and thus causing declines in soil biological activity and soil species diversity [80][81][82] Reductions in organic matter can reduce porosity [83,84] and infiltration capacity and therefore change water and nutrient cycles, plant productivity, and even the energy balance of a system [85,86]. The abundance and biodiversity of soil organisms is reduced as a result of intensive grazing, biomass burning (either of crop residue or for land clearing) [87], tillage and bed preparation [88], leaving soils bare, mono-cropping, especially in maize growing areas, and excess fertilizer application [82,89].…”

Section: Types Of Degradation In Sub-saharan Africamentioning

confidence: 99%

“…Thus, degradation may be difficult to discern from integrated assessments, which evaluate specific priorities. For example, the replacement of forest by cropland can be used as a landscape scale indicator of degradation [78], even if at the field-scale, farmers report no declines in yield. Similarly, farmers may report improving maize yields when soil properties (C, N, and pH) remain unchanged [48].…”

Section: Integrated Assessmentsmentioning

confidence: 99%

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

et al. 2015

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Abstract:The 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. OPEN ACCESS

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Section: Types Of Degradation In Sub-saharan Africamentioning

confidence: 99%

Section: Integrated Assessmentsmentioning

confidence: 99%

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

et al. 2015

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“…Cet état de fait a réduit la compétitivité du Burkina Faso sur le marché mondial (CNRST, 2007). Les agriculteurs ainsi que les chercheurs et les industries ont commencé à chercher une solution pour rehausser la productivité du coton (SCHWARTZ 1991, GRAY 1999, ROBERTS 1995. Le problème des insectes a eu une incidence non seulement sur la quantité, mais aussi sur la qualité de la production de coton conventionnel qui a affecté la compétitivité du pays sur le marché mondial du coton.…”

Section: Encadré Méthodologie De Collecte Des Donnéesunclassified

Le Coton Biotechnologique au Burkina Faso : Trajectoire d’une Innovation dans un Contexte de Développement

Sawadogo¹

2017

TechInn

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“…Au cours des deux dernières décennies, on observe une stagnation des rendements agricoles (FAO and FIDA, 2013) 1 . La croissance de la production a donc surtout été le fait d'une croissance des superficies (CEDEAO, 2007) alors que la croissance de la population se traduit par une pression de plus en plus importante sur les ressources, ce qui implique une forte dégradation des sols soulignée par de nombreux travaux (Taonda et al, 1995;Gray, 1999;Visser et al, 2003).…”

Section: Contexte Et Problématiqueunclassified

Investissement public et sécurité alimentaire au Burkina Faso : une analyse en Équilibre Général Calculable dynamique

Zidouemba¹,

Gérard²

2012

RAEStud

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Publié par Raestud, n° 96 vol 3, septembre 2015, pages 411-437 RésuméCet article analyse les raisons des faibles performances dans la lutte contre l'insécurité alimentaire et la pauvreté au Burkina Faso malgré les performances macroéconomiques enregistrées par le pays au cours des dernières décennies. Il analyse ensuite, à l'aide d'un modèle d'Equilibre Général Calculable, la capacité d'un investissement public dans l'agriculture à améliorer la situation actuelle des pauvres. Plusieurs éléments se conjuguent pour expliquer la persistance de la pauvreté et de l'insécurité alimentaire: la forte croissance démographique qui implique une faible croissance du PIB par tête ; la faible contribution de l'agriculture à la croissance globale; la persistance d'un chômage urbain ; et une répartition des fruits de la croissance peu favorable aux pauvres. L'investissement public dans l'agriculture, en augmentant la productivité dans les activités agricoles, permet des progrès en milieu rural et surtout en milieu urbain. Abstract This paper analyses the reasons for the weak results in fighting against food insecurity and poverty in Burkina Faso, despite the country's good macroeconomic performances recorded in recent decades. It then analyses, using a Computable General Equilibrium model, the ability of a public investment in agriculture to

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Is land being degraded? A multi-scale investigation of landscape change in southwestern Burkina Faso

Cited by 95 publications

References 19 publications

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

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

Le Coton Biotechnologique au Burkina Faso : Trajectoire d’une Innovation dans un Contexte de Développement

Investissement public et sécurité alimentaire au Burkina Faso : une analyse en Équilibre Général Calculable dynamique

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