最近,有细心的网友发现,今年秋叶变色比往年晚了些。就拿南京来说,今年玄武湖景区的银杏季可谓“姗姗来迟”,这究竟是啥原因?“难道是今年温度下降得比较慢吗?”“可能今年冷得比较晚吧!”“主要我们南京这个冬天来得晚,秋天延迟得比较迟。”……景区游客众说纷纭。事实果真如此吗?
Liu, Z. Y., Wang, Y., Gallimore, R., Notaro, M., and Prentice, I. C. On the cause of abrupt vegetation collapse in North Africa during the Holocene: Climate variability vs. vegetation feedback. Geophysical Research Letters 33, L22709 .