Museo Nacional de Historia Natural, Santiago, Chile.
PLoS One. 2020 Aug 10;15(8):e0237532. doi: 10.1371/journal.pone.0237532. eCollection 2020.
Resettlement, as a major imperial policy in the Inca empire, appears to have been a widespread mechanism for labor mobilization and the dismantling of rebellions. While multiple ethnohistorical references exist regarding resettlement in the central Andes, the extent of this policy in the imperial provinces is still unknown, especially in cases of economic intensification that might have required more labor force. The δ18O isotope is a good proxy for human mobility when comparing the childhood isotopic signature in the teeth enamel and the local water signature at the place of death. If applied to the study of an archaeological sequence, we can observe the expansion or reduction of a population's displacement within a territory, if they received foreigners, and in general, how their social interaction and networks changed over time. In a marginal provincial setting of the Inca empire, such as Copiapó valley in Chile, the study of δ18O isotope can enable us to observe if the alleged economic intensification in metallurgical production implied the massive arrival of foreign populations. Significantly, the Late Horizon does not evidence a great change in terms of mobility, compared to previous periods in Copiapó valley. Thus, the isotopic evidence can more clearly illuminate the social and political dynamics of an imperial provincial setting, where economic activities demanded by the Inca state were mainly carried out by the local labor force.
再安置，作为印加帝国的一项主要国策，似乎是一种广泛的劳动力动员和叛乱瓦解机制。虽然安第斯中部地区存在着关于再安置的多种民族历史记载，但这一政策在帝国省份的实施程度仍不得而知，特别是在可能需要更多劳动力的经济集约化情况下。当比较牙齿珐琅质中的童年同位素特征与死亡地点的当地水同位素特征时，δ18O 同位素是人类流动性的良好替代指标。如果将其应用于考古序列的研究，我们可以观察到一个人口在其领土内的迁移的扩张或减少，如果他们接收了外国人，以及总体上他们的社会互动和网络如何随时间变化。在印加帝国的边缘省级地区，如智利的科皮亚波谷，对 δ18O 同位素的研究可以使我们观察到冶金生产中的所谓经济集约化是否意味着大量外国人口的涌入。重要的是，与科皮亚波谷之前的时期相比，晚期时期在流动性方面并没有很大的变化。因此，同位素证据可以更清楚地阐明一个帝国省级地区的社会和政治动态，在那里，印加国家所要求的经济活动主要由当地劳动力来完成。
