地理漫步·世界地理英语30篇（4）
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The Pamirs: The ‘Roof of the World’ Where Four Mountain Systems Converge
帕米尔高原：四大山系交汇的‘世界屋脊’
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The Pamirs sit at the convergence of the Tian Shan, Kunlun, Karakoram, and Hindu Kush ranges.
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This tectonic knot formed as the Indian Plate collided obliquely with Eurasia.
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Glaciers here feed major rivers including the Amu Darya and Syr Darya.
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High-elevation valleys host unique pastoral adaptations amid extreme seasonal temperature swings.
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Permafrost patches persist even at lower altitudes due to thin insulating soils and wind exposure.
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Drainage divides shift subtly as glacial retreat exposes new moraine-dammed lakes.
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Nomadic routes follow snowmelt corridors where grasslands briefly green each summer.
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Seismic activity remains high as crustal blocks continue adjusting under compressional stress.
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The region’s remoteness preserves biodiversity but limits infrastructure development and monitoring capacity.
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Its geography shapes cross-border water governance challenges across Tajikistan, China, and Afghanistan.