地理漫步·世界地理英语30篇（8）
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Environmental Feedback Loops Shape Regional Stability
环境反馈回路塑造区域稳定性
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Forests cool local air, which helps rain fall again.森林冷却局部空气，促进降雨再次发生。
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Less rain means fewer trees, leading to even drier air.降雨减少意味着树木减少，进而导致空气更加干燥。
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Glaciers reflect sunlight; melting exposes darker ground.冰川反射阳光；融化后露出颜色更深的地表。
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Darker ground absorbs more heat and speeds further melt.深色地表吸收更多热量，加速进一步融化。
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Wetlands store floodwater, reducing erosion downstream.湿地储存洪水，减轻下游侵蚀。
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Draining wetlands increases flood risk and land loss.排干湿地会增加洪灾风险和土地流失。
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Such loops can strengthen or weaken whole landscapes.这类循环可增强或削弱整个景观。
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Careful observation reveals how places maintain balance.仔细观察可发现各地如何维持平衡。