Spatiotemporal pattern of Neolithic-Bronze Age settlements and its driving mechanisms in Northern Haidai Region, China: Natural environment, social organization, and subsistence strategies

The spatiotemporal distribution of settlements and their environmental context since the Neolithic is one of the vital components for exploring past changes in human-land relations. However, little attention has been paid to the relationship between the evolution of the social organization, settlement patterns, and the corresponding environmental settings. In this study, the spatiotemporal distribution and rank-size of settlements revealed crucial aspects of the hydrogeomorphic conditions, cultural inheritance, and social evolution in northern Shandong Province based on the GIS analytical methods. The prehistoric settlements were primarily distributed in the pre-mountain plains and low mountain hills due to the change of water volume of big rivers and sea level fluctuations until the expansion to the northern plains during the Longshan period. Determined cultural sequences were demonstrated to be accompanied by different settlement development patterns. Most settlements in an older period were abandoned in the subsequently younger period except the Shang-Zhou period, indicating poor inheritance. The emergence of a middle and high-rank regional settlement system in the Dawenkou-Longshan period suggests a fundamental change in social organization, reflecting the transition from complex chiefdoms to early city-state kingdoms. Such a regional social stratification was intensified during the Shang-Zhou periods when a four-tier settlement system emerged. In addition, the solid cultural importation from the Dawenkou-Longshan period to the central and southern regions brought about the exchange and advancement of production technologies, which once established a solid position in agriculture. However, this was broken by drought and cold climatic events, and the complexity of the Yueshi cultural settlement system that subsequently emerged was substantially weakened. As an important area of Haidai culture, the natural driving force and social organization of ancient culture development from the Neolithic Age to the Bronze Age are of great significance for understanding the interrelationship between the origin and process of Chinese civilization and environmental evolution.