The seed density of climax species such as Pinus koraiensis, Abies nephrolepis, and Acer mono increased, whereas that of Maackia amurensis and Fraxinus mandshurica decreased.

• 红松、臭松和色木槭等顶极种的种子密度逐渐增大，山槐、水曲柳等树种的种子密度逐步降低；