北部早期出现峰值落叶,因天气和气候变化造成区域差异,影响旅游业。 Peak fall foliage is occurring early in the North, with regional variations due to weather and climate change, impacting tourism.

美国各地的秋季叶子在达到顶峰,北部州的颜色早在9月中旬就会出现,高峰时间因地区,海拔,温度和天气而异. Fall foliage is peaking across the U.S., with northern states seeing colors as early as mid-September, and peak timing varying by region, elevation, temperature, and weather. 预测显示,到10月4日,西北部和中西部的峰值颜色为10月11日,到10月4日,新英格兰和西北太平洋的峰值颜色为10月11日,随后不久,蓝脊山脉的峰值颜色为10月11日。 Projections indicate peak colors in the northern West and Midwest by October 4, New England and the Pacific Northwest by October 11, and the Blue Ridge Mountains shortly after. 叶色变化是由于日数较短,温度更低,叶绿素破碎,暴露黄色和橙色,而红色在某些条件下发展。 Leaf color change results from shorter days and cooler temperatures breaking down chlorophyll, revealing yellows and oranges, while reds develop under certain conditions. 温泉可能引发更早的变化,但更暖的瀑布可能延缓这些变化,而气候变化也促成了较晚的峰值叶的趋势。 Warmer springs may trigger earlier changes, but warmer falls can delay them, and climate change has contributed to a trend of later peak foliage. 山峰季节通常持续七至十天,受天气寒冷的日子和寒冷的夜晚影响,延长了山峰季节,而风暴则缩短了山峰季节。 The peak season typically lasts seven to ten days, influenced by weather—sunny days and cool nights extend it, while storms shorten it. 干旱可能加深红色湿润,但也会导致叶子早期下降。 Drought can deepen red hues but also cause early leaf drop. 如果当地观点显得乏味,专家建议探索附近或南部地区,因为条件在短距离内差别很大。 Experts advise exploring nearby or southern areas if local views appear dull, as conditions vary significantly over short distances. 落叶旅游创造数十亿的经济活动,特别是在新英格兰。 Fall foliage tourism generates billions in economic activity, especially in New England.