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Anne Mette Lykke

Physicochemical indicators of land degradation in West Africa

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  • Yameogo Jérôme, University of Nazi Boni (UNB), Rural Development Institute (IDR), Bobo-Dioulasso, Burkina Faso, Burkina Faso
  • Zézouma Sanon, National Center of Scientific and Technological Research, Department of Environment and Forests, Institute of environment and Agricultural Research, Ouagadougou, BurkinaFaso, Burkina Faso
  • Boubacar M Moussa, University of Diffa, Department of Plant Production, Faculty of Agronomic Sciences, Diffa, Niger, Niger
  • Irénée Somda, University of Nazi Boni (UNB), Rural Development Institute (IDR), Bobo-Dioulasso, Burkina Faso, Burkina Faso
  • Anne Mette Lykke
  • Jørgen Aagaard Axelsen
Desertification and land degradation affect the livelihood of a large number of people in the drier areas of the world, but there is no generally accepted scale, on which the degree of degradation can be measured. However, scientists are working on finding indicators of degradation, although it can be difficult to identify to what these indicators might be related.
In this paper, we have investigated a number of soil-physicochemical parameters in relation to a degradation scale of land uses. The results show that high sand content and C/N values may be used as indicators of degradation, and high contents/values of carbon, organic matter, nitrogen, available K+, CEC, SBE may be used as indicators of no or weak degradation. CEC showed the steepest gradient in relation to land use and may be the most useful soil physicochemical degradation indicator.
The investigated land uses had different densities of trees, which was the reason for suggesting the vegetative biomass relative to a virgin forest situation as a scale of degradation.
OriginalsprogEngelsk
TidsskriftGeography and Environment
ISSN2054-4049
StatusAfsendt - 2019

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