地理漫步·世界地理英语30篇（6）

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批次0022-040：大气河流塑造的生物地理廊道

Atmospheric rivers deliver moisture that sustains coastal redwood forests far inland via orographic lift and fog drip.
Their seasonal paths create narrow, linear bioclimatic zones where temperate rainforest species migrate uphill.
Bird migration routes along the Pacific Northwest align precisely with persistent AR moisture corridors.
Plant pollen trapped in lake sediments shows repeated northward dispersal pulses coinciding with AR intensity spikes.
Marine fog belts—fed by AR-modified ocean evaporation—form microclimatic refugia for endemic lichens and mosses.
Genetic studies reveal population connectivity among coastal pines correlates with historical AR frequency patterns.
Snowpack depth gradients on windward slopes determine alpine meadow extent and pollinator habitat continuity.
AR-driven rainfall variability explains why some montane amphibian populations persist while others collapse rapidly.
Climate models project corridor narrowing will isolate biodiversity hotspots in California’s Transverse Ranges.
These sky-rivers redefine biogeography not by land bridges, but by aerial moisture highways.