地理漫步·世界地理英语精读30篇（3）

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咸海危机：水文政治工程的警示录

Once the world’s fourth-largest lake, the Aral Sea has lost over 90% of its volume since the 1960s due to Soviet-era cotton irrigation diversions.
Cotton monoculture expanded across Uzbekistan and Kazakhstan without basin-wide water allocation treaties, turning rivers into agricultural conveyors.
Salinity rose from 10 g/L to over 100 g/L, collapsing native fisheries and triggering mass respiratory disease from exposed toxic sediments.
The North Aral Sea recovery—achieved via Kazakhstan’s Kok-Aral Dam—demonstrates targeted infrastructure can reverse degradation, albeit partially.
Meanwhile, the South Aral remains largely desiccated, its former seabed now the Aralkum Desert, generating dust storms laden with pesticides.
Regional water diplomacy remains fragile; Uzbekistan prioritizes cotton exports while Kyrgyzstan controls upstream hydropower reservoir releases.
Satellite imagery confirms groundwater depletion continues beneath irrigated fields, undermining long-term aquifer sustainability.
International aid focuses on public health interventions and alternative livelihoods, yet rarely addresses the underlying export-oriented agrarian model.
Legal scholars argue the crisis exemplifies ‘hydro-hegemony’—where upstream states control water access through infrastructure and treaties.
Its legacy endures not as a relic, but as a template for evaluating current transboundary projects like the Grand Ethiopian Renaissance Dam.