Match each distinct region in Nigeria suffering from severe environmental hazards (List I) with its predominant physical geological or anthropogenic driving mechanism (List II).
- Southeastern Sedimentary Scarplands (e.g., Agulu-Nanka, Anambra State)Catastrophic gully expansion driven by torrential rainfall acting on friable, poorly consolidated Cenozoic sandstone formations.
- Sahelian Northern Borderlands (e.g., Yobe and Borno Axis)Persistent desiccation, devegetation, and intense aeolian transport causing southward sand dune encroachment.
- Barrier-Lagoon Coastal Belt (e.g., Victoria Island, Lagos State)High-energy marine wave action, tidal storm surges, and coastal subsidence inducing severe shoreline retreat.
- Niger Delta Wetland Basin (e.g., Ogoniland, Rivers State)Systemic crude hydrocarbon spillage, gas flaring, and destruction of fragile brackish mangrove swamps.
Cevap
Southeastern Sedimentary Scarplands matches catastrophic gully expansion on friable sandstones; Sahelian Northern Borderlands matches persistent desiccation and sand dune encroachment; Barrier-Lagoon Coastal Belt matches marine wave action and shoreline retreat; Niger Delta Wetland Basin matches crude hydrocarbon spillage and mangrove destruction.
Each ecological zone in Nigeria possesses distinct physical substrate properties and anthropogenic pressures: Southeastern sandstones are vulnerable to hydraulic gully cutting, Northern Sahel is vulnerable to wind-driven desertification, Atlantic coastlines suffer marine erosion, and the Niger Delta encounters oil pollution.
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Anahtar Kavram
Spatial Distribution and Physical/Human Causes of Environmental Hazards in Nigeria