Evergreen broad-leaved forests in Japan and Eastern North America are shifting due to climate warming. Laurel forests and evergreen Fagaceae forests are common in these regions, with different characteristics. With global warming, weedy species from warmer areas are moving northward. Species from warm-temperate evergreen forests are also expanding northward, invading deciduous forest regions. In Japan, Quercus myrsinaefolia is moving inland, possibly due to climate warming. In the southeastern USA, there is no documented northward expansion, possibly due to different factors like substrate discontinuity and climate variability.