图片画廊:美不胜收的美国金秋

Aspen Trees, Colorado 科罗拉多的颤杨树
Photograph by Carr Clifton/Minden Pictures 摄影：卡尔•克利夫顿（Carr Clifton）/明登图片

 
      Quaking aspens like these in the Elk Mountains of western Colorado, whose leaves tremble in the slightest wind, are common across North America. Known for tolerating poor soils and cold climates, aspens flash yellow against their white bark in an unmistakable sign of coming winter.

      像这些在科罗拉多州西部的美洲赤鹿山颤动的杨树在整个北美非常普遍。它们的叶子会在微风中颤抖。颤杨以能忍耐贫瘠土壤和寒冷气候而闻名。以它们的白色树皮为衬托，颤杨树林间闪烁着黄叶，预示着即将来临的冬天。

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