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植物学家对阿尔卑斯山脉的植被考察之后,发现了一个奇怪现象:最近100年来,许多高山上的植物品种正在增加,许多山底牧场上开放的花已经开到了海拔2000米的高山雪带上,而原先雪带上的植物则超过了雪带向更高处攀登。
A botanist’s observation of the vegetation in the Alps discovered a curious phenomenon: the number of plant species in the mountains has been increasing over the last 100 years, and many open flowers on hillside pastures have been opened up to 2,000 meters above sea level. The original snow-covered plants are more than snow to climb higher.