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Olsson, L., Barbosa, H., Bhadwal, S., Cowie, A., Delusca, K., Flores-Renteria, D., Hermans, K., Jobbagy, E., Kurz, W., Li, D., Sonwa, D.J. and Stringer, L. (2019) Land Degradation. In: Climate Change and Land: An IPCC Special Report on Climate Change, Desertification, Land Degradation, Sustainable Land Management, Food Security, and Greenhouse Gas Fluxes in Terrestrial Ecosystems, Lund University Centre for Sustainability Studies, 184 p.

has been cited by the following article:

• TITLE: Water Erosion in the Donga Soils in Subhumid Zone in West Africa

  AUTHORS: Julien Avakoudjo, Félix Alladassi Kouelo, Valentin Missiako Kindomihou, Pierre Irénikatché Akponikpe, Anastase Hessou Azontonde, Brice Augustin Sinsin, Tobi Moriaque Akplo, Mahugnon Socrate Agonvinon

  KEYWORDS: W National Park, Land Use Areas, Dongas, Runoff, Erosion, Soil Loss

  JOURNAL NAME: Journal of Environmental Protection, Vol.11 No.12, December 30, 2020

  ABSTRACT: The runoff and soil loss were assessed in situ at the scale of 2.12 m2 plots during the rainy season of 2010 to better understand the determinants and magnitude of the massive soil loss and land subsidence (donga) in the sub-humid zone of Africa in Karimama, North Benin. The experimental design was a split plot with two factors: the topography in 3 modalities (upstream, center and downstream of the donga) was assigned as main plot factor and the degree of degradation of dongas in 2 modalities (beginner dongas and advanced dongas) was assigned as subplot factor. Runoff water was collected through a storage system composed of two tanks. Data were collected on 36 plots (9 plots per donga × 4 dongas). The runoff varies significantly from one site to another for the rainy episode of October 10, 2010. It is twice as high in land use areas (5.87 mm) as in W Park (2.32 mm; l.s.d. = 1.81 mm). From upstream to downstream, runoff and soil loss increased from 2.4 mm to 85.3 mm and 80 g·m-2 to 197 g·m-2, respectively. Runoff is high in the early dongas (7.60 mm) and low in the advanced dongas (5.68 mm) in contrast to lower soil loss in the early dongas (34 g·m-2) and high in the advanced dongas (237 g·m-2). The low value of soil loss with respect to the magnitude of the phenomenon suggests the probable occurrence of other soil loss mechanisms to be elucidated.