Evaluation of Agricultural Practices Scenarios for Reducing Erosion in Buyo Lake Catchment (Sassandra; Côte d’Ivoire) by Use of GIS

Abstract

This study has used RUSLE model factors within a GIS component to evaluate eroded soil and developed viable agricultural practices scenarios to reduce soil loss in Buyo Lake catchment in the Western region of Côte d'Ivoire. Consequently, five study cases were tested as following: scenario 1-association of dense forest and crops with a high percentage of mulch; scenario 2-corn and sorghum combination by considering a high yield without conventional tillage; scenario 3-establishment of an herbaceous meadow; and scenario 4-association of palm, coffee, and cocoa with green cover. Scenario P was the setting up of straw mulch after corn or sorghum harvest. The erosion map resulting from these study cases showed by estimation, an average of soil loss of about 95 t/ha/year. The respective values obtained for the scenarios 1, 2 and 3 are 28 t/ha/year, 66 t/ha/year and 30 t/ha/year. This indicates a decrease of 68%. By scenario 4, the estimated average was 2 t/ha/year corresponding to a decrease of 98%. The combination of scenario 2 with scenario P gave soil losses average of 5 t/ha/year, i.e. a 95% reduction. This study shows that the association of palm, coffee, and cocoa with green cover would be very effective in reducing soil loss.

Mapping Land Use Land Cover Transitions at Different Spatiotemporal Scales in West Africa

“…Artificial dams and small reservoirs were observed at the fringes of some of the areas where we detected natural vegetation losses. The transition of natural vegetation to water bodies may indicate natural flooding or anthropogenic development of pounds and small reservoirs for cropland irrigation, dams for hydro-power generation, urban supply and consumption, as well as other economic purposes [23,24,27,56,86,95,107,[112][113][114][115][116][117][118]. These developments could possibly be explained as adaptation measures adopted in some parts of West Africa to mitigate the impact of the severe drought of the 1970s and the 1980s.…”

A Survey of GIS and IoT Integration: Applications and Architecture

“…Broadly speaking, agriculture can be considered as an inherently geospatial practice [93] which not surprisingly can be pertained to GIS subjects. According to Reference [93], GIS and spatial decision support hold some benefits in agriculture such as Enhancing the efficiency of food production systems [94][95][96], Managing pests and diseases [97][98][99][100], Minimizing soil erosion [101][102][103], Preserving biodiversity [104,105], and simulating the effects of climate change [94,106]. As mentioned in [107], due to a rise in migration to urban areas, agriculture is facing some difficulties.…”

Contribution of Agro-Hydrological Modeling in the Evaluation of Water Availability of an Ungauged Basin Reservoir in Côte d’Ivoire: Case of the Loka Reservoir in Bouaké

“…In SWAT-CUP, SUFI-2 uses the Latin-One-At-a-Time (LH-OAT) Hypercube method [33] as a method for sampling sensitive parameters. The LH-OAT method involves changing one parameter at a time, while the other parameters are left untouched To avoid sampling all 629 parameters, the sensitivity analysis was based on the literature on the use of SWAT model in Côte d'Ivoire by [5] [36]. At the uncertainties level, two variables were used to quantify their inclusion by SUFI-2 algorithm [37] [38].…”