The first are temperate deciduous forests.

第一类是温带落叶林。

Many forests in Europe, the United States and parts of Canada are temperate deciduous forests.

欧洲、美国和加拿大部分地区的许多森林都是温带落叶林。

However, observational work carried out in temperate deciduous forests by Kristina Anderson-Teixeira at the Smithsonian Conservation Biology Institute in Front Royal, Virginia, and her colleagues found no sign of this happening.

然而，弗吉尼亚州皇家前线史密森保护生物研究所的克里斯蒂娜·安德森·特谢拉和她的同事在温带落叶林在进行观察工作时，并没有发现这种情况发生的迹象。