Match each soil conservation and management strategy implemented in Nigeria on the left with the corresponding soil degradation threat and soil type it primarily addresses on the right.
- Establishment of multi-row shelterbelts and afforestation belts across Sokoto, Katsina, and Kano statesControl of wind erosion, sand dune drift, and moisture loss on loose, sandy northern Regosols and brown soils
- Installation of gabion check dams, drainage diversions, and bamboo revegetation along the Agulu-Nanka and Enugu escarpmentsMitigation of catastrophic gully incision and severe structural breakdown in friable, deeply weathered, sandy Ferrallitic soils
- Implementation of stone terracing, contour ridging, and strip cropping on the elevated slopes of the Jos PlateauPrevention of extensive sheetwash, surface runoff erosion, and topsoil loss on thin, basement-derived Ferruginous soils
- Construction of protective dykes, tidal bunds, and controlled drainage systems across the coastal lowlands of the Niger DeltaManagement of tidal flooding, salinization, and prolonged waterlogging in coastal Hydromorphic and mangrove swamp soils
Cevap
The correct pairings match each regional soil conservation practice in Nigeria to its target soil type and degradation mechanism: Shelterbelts in northern states control wind erosion on loose Regosols; Gabion check dams and revegetation in Southeastern escarpments stabilize deep gully erosion on friable sandy Ferrallitic soils; Terracing and contour ridging on the Jos Plateau prevent sheet erosion on shallow highland Ferruginous soils; Dykes and drainage controls in the Niger Delta manage tidal flooding and salinization in coastal Hydromorphic soils.
Each pair correctly links a distinct Nigerian geographic region and soil conservation method with its specific soil degradation process and soil group. Shelterbelts stabilize light-textured northern Regosols against wind erosion; gabions and biological planting remediate catastrophic gully erosion in deep Southeastern sandy Ferrallitic soils; stone terracing limits sheet erosion on Jos Plateau Ferruginous soils; and coastal bunds manage flooding/salinization in Niger Delta Hydromorphic soils.
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Anahtar Kavram
Regional variation of soil degradation mechanisms and targeted soil conservation techniques across Nigerian soil zones
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