Lake Chad Basin: Hydrological Fragility in a Shifting Climate Zone
乍得湖流域：气候过渡带中的水文脆弱性
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Lake Chad, straddling Chad, Cameroon, Niger, and Nigeria, occupies a Sahelian transition zone between savanna and desert.
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Its surface area has shrunk by over 90% since the 1960s due to reduced rainfall and increased irrigation withdrawals.
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