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原文連結
論文資訊
- 類型：已發表論文
- 日期：2020-03-01
摘要
Food exchange between human 族群s can mitigate the risk arising from variable food production. 網絡s of exchange vary according to context but tend to fall into a relatively small number of qualitatively different types, including 利他主義, reciprocity, and resource pooling. This apparent canalization raises the question of whether specific 網絡s of food exchange exhibit features that allow them to persist in the longer term, and we address this question by using a model of food exchange among multiple 族群s. First, we show that essentially any mode of exchange in our model will help to buffer the risk associated with local environmental variability. However, we also find that only a limited set of 網絡s will guarantee 族群 stability when resources are scarce. These stabilizing 網絡s overlap empirical class
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