The Impact of Land Degradation on Agricultural Productivity in Nyabihu District-Rwanda, A Case Study of Rugera Sector

Abstract This study looked at the impact of land degradation on agricultural productivity in Nyabihu district. Specific objectives were to assess the factors influencing land degradation in Nyabihu district, Rugera sector, the vulnerability level of land degradation and propose suitable land management conservation strategies.

Geographical Information system (GIS) and Remote sensing data were used for the assessment of factors influencing land degradation, where Land cover (classified) maps were produced based on data extracted from google earth and cultivated slope was computed based on the Digital elevation model (DEM) of 2018 downloaded from earthexplorer.usgs.gov. GIS vulnerability assessment and classification method was used to assess level of vulnerability to soil degradation and land slide. To propose suitable land management conservation strategies practical Tools on Soil and Water Conservation measures alongside with W4GR matrix of soil and water conservation measures documents were consulted. The data collected were analyzed using ArcGIS 10.4software, and Excel; the results were presented using maps, bar graphs and tables. Based on two main factors (slope and soil depth) a conservation map and matrix were developed with proposed options of restoration and conservation of land degraded.

Keywords— land degradation, agricultural productivity, soil fertility, GIS.

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Agriculture Journal: The Impact of Land Degradation on Agricultural Productivity in Nyabihu District-Rwanda, A Case Study of Rugera Sector

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