22 publication(s) trouvée(s)
Article scientifique
Soil degradation assessment across tropical grassland of Western Kenya
Abstract. Soils across sub-Saharan Africa are exposed to extensive degradation, reducing their ability to produce crops and support livestock. While …
Article scientifique
Drivers and vertical CO 2 flux balances in a Sahelian agroforestry system: Insights from high frequency measurements
Agroforestry systems – combining trees with crops and/or livestock – are increasingly promoted as sustainable and climate-resilient land-use strategies. Despite …
Article scientifique
Limited effect of organic matter addition on stabilised organic carbon in four tropical arable soils
Arable soils are generally characterised by a low soil organic carbon (SOC) content, with negative consequences for soil health, crop …
Article scientifique
Soil characteristics, land suitability and effect of trachyte and basalt rock powders on maize ( Zea mays L.) growth and yield on Fluvisols in Cameroon's Sudano-Sahelian zone (Central Africa)
The Sudano–Sahelian zone of Cameroon, characterized by a low annual rainfall, faces challenges in soil fertility preservation due to agricultural …
Article scientifique
Trapnell's Upper Valley soils of Zambia: the production of an integrated understanding of geomorphology, pedology, ecology, and land use
The Ecological Survey of Northern Rhodesia (now Zambia), undertaken in the 1930s under the leadership of Colin G. Trapnell, was …
Article scientifique
Gully rehabilitation in southern Ethiopia – value and impacts for farmers
Gully erosion can be combatted in severely affected regions like sub-Saharan Africa using various low-cost interventions that are accessible to …
Article scientifique
Mulch application as the overarching factor explaining increase in soil organic carbon stocks under conservation agriculture in two 8-year-old experiments in Zimbabwe
Conservation agriculture (CA), combining reduced or no tillage, permanent soil cover, and improved rotations, is often promoted as a climate-smart …
Article scientifique
Managing soil organic carbon in tropical agroecosystems: evidence from four long-term experiments in Kenya
In sub-Saharan Africa, maize is one of the most important staple crops, but long-term maize cropping with low external inputs …
Article scientifique
Elemental stoichiometry and Rock-Eval® thermal stability of organic matter in French topsoils
The quality and quantity of soil organic matter (SOM) are key elements that impact soil health and climate regulation by …
Article scientifique
Accuracy of regional-to-global soil maps for on-farm decision-making: are soil maps “good enough”?
A major obstacle to selecting the most appropriate crops and closing the yield gap in many areas of the world …
Article scientifique
Assessing soil and land health across two landscapes in eastern Rwanda to inform restoration activities
Abstract. Land degradation negatively impacts water, food, and nutrition security and is leading to increased competition for resources. While landscape …
Article scientifique
Spatial distribution of argan tree influence on soil properties in southern Morocco
Abstract. The endemic argan tree (Argania spinosa) populations in southern Morocco are highly degraded due to overbrowsing, illegal firewood extraction …
Article scientifique
Nutrient limitations regulate soil greenhouse gas fluxes from tropical forests: evidence from an ecosystem-scale nutrient manipulation experiment in Uganda
Abstract. Soil macronutrient availability is one of the abiotic controls that alters the exchange of greenhouse gases (GHGs) between the …
Article scientifique
Assessing soil redistribution of forest and cropland sites in wet tropical Africa using 239+240 Pu fallout radionuclides
Abstract. Due to the rapidly growing population in tropical Africa, a substantial rise in food demand is predicted in upcoming …
Article scientifique
Continental-scale controls on soil organic carbon across sub-Saharan Africa
Abstract. Soil organic carbon (SOC) stabilization and destabilization has been studied intensively. Yet, the factors which control SOC content across …
Article scientifique
Particulate macronutrient exports from tropical African montane catchments point to the impoverishment of agricultural soils
Abstract. Agricultural catchments in the tropics often generate high concentrations of suspended sediments following the conversion of natural ecosystems. The …
Article scientifique
Stable isotope signatures of soil nitrogen on an environmental–geomorphic gradient within the Congo Basin
Abstract. Nitrogen (N) availability can be highly variable in tropical forests on regional and local scales. While environmental gradients influence …
Article scientifique
Nitrogen availability determines the long-term impact of land use change on soil carbon stocks in grasslands of southern Ghana
Abstract. Enhancing the capacity of agricultural soils to resist soil degradation and to mitigate climate change requires long-term assessments of …
Article scientifique
Base cations in the soil bank: non-exchangeable pools may sustain centuries of net loss to forestry and leaching
Abstract. Accurately quantifying soil base cation pool sizes is essential to interpreting the sustainability of forest harvests from element mass-balance …
Article scientifique
Spatial assessments of soil organic carbon for stakeholder decision-making – a case study from Kenya
Abstract. Land degradation impacts the health and livelihoods of about 1.5 billion people worldwide. Given that the state of the …
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