Articles | Volume 7, issue 1
Solid Earth, 7, 93–103, 2016
https://doi.org/10.5194/se-7-93-2016
Solid Earth, 7, 93–103, 2016
https://doi.org/10.5194/se-7-93-2016

Research article 21 Jan 2016

Research article | 21 Jan 2016

Quantifying the impact of land degradation on crop production: the case of Senegal

B. G. J. S. Sonneveld et al.

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Cited articles

ADB: Senegal Economic Outlook, African Development Bank Group, available at: http://www.afdb.org/en/countries/west-africa/senegal/senegal-economic-outlook/ (last access: August 2014), 2014.
Araya, A., Keesstra, S. D., and Stroosnijder, L.: Simulating yield response to water of Teff (Eragrostis tef) with FAO's AquaCrop model, Field Crops Res., 116, 196–204, https://doi.org/10.1016/j.fcr.2009.12.010, 2010.
Bai, X. Y., Wang, S. J., and Xiong, K. N.: Assessing spatial-temporal evolution processes of karst rocky desertification land: indications for restoration strategies, Land Degrad. Dev., 24, 47–56, https://doi.org/10.1002/ldr.1102, 2013.
Berendse, F., van Ruijven, J., Jongejans, E., and Keesstra, S.: Loss of plant species diversity reduces soil erosion resistance, Ecosystems, 18, 881–888, https://doi.org/10.1007/s10021-015-9869-6, 2015.
Bergtold, J., Norton, G., and Brewster, C.: Lom'e to Cotonou conventions: trade policy alternatives for the Senegalese groundnut sector, Agr. Econ., 33, 315–323, 2005.
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Short summary
We found a plausible relationship between crop yield and a land degradation index based on expert judgements and affected area share. A pseudo-experiment was designed that for sites with otherwise similar circumstances compares the yield of a site with and one without land degradation. Our overall conclusion is that yield reduction is associated with higher levels of land degradation, irrespective of whether fertilizer is being applied or not.