地理漫步·世界地理英语30篇（4）
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The Murray-Darling Basin: Australia’s Food Bowl Under Stress
墨累-达令盆地：压力下的澳大利亚粮仓
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Australia’s largest river system drains one-seventh of the continent yet supports 40% of its agricultural output.
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Overallocation of water licenses led to unsustainable extractions, especially during multi-year droughts.
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Native river red gums depend on periodic flooding—now disrupted by upstream dams and weirs.
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Salinity rose sharply as irrigation drew groundwater, bringing dissolved salts to the surface.
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The Murray-Darling Basin Plan sets binding limits on water use and funds environmental water buys.
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Aboriginal groups co-manage cultural flows—water allocations honoring spiritual and ecological needs.
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Farmers adopt laser-guided leveling and soil moisture sensors to optimize irrigation timing.
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River red gum forests provide nesting hollows for endangered glossy black cockatoos.
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Climate projections show winter rainfall declining 15% by 2050, intensifying summer evaporation.
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Citizen scientists monitor frog calls and waterbird counts to track wetland recovery progress.