Then, this aticle discusses the ecosystem modes and their changes during the Neolithic period and Bronze age with the statistic on productive tools and animal bones found in many sites.

• 再次,通过对遗址中出土生产工具的统计分析,结合遗址出土的各类动物骨骼和贝类遗骸,重点讨论了辽东半岛在小珠山下层时期、小珠山中层时期、小珠山上层时期和青铜时代生存经济的模式与变化。