Around 30 ka, taiga of dominant Picea coexisted with Larix, Pinus and Abies was distributed in both islands under relatively colder and drier climate than at present.

• 两个岛上3万年前后以云杉与落叶松共生的森林为主,松和冷杉出现在比现代相对较冷和干的气候条件下。