The Shuangdun Culture,which existed from 7500 to 7000 BP,was primarily located along the middle Huai River valley.This study focused on analyzing animal bones from the Yuhuicun site,by using stable carbon and nitrogen isotopes to understand the livestock husbandry strategy of the culture.The results revealed that most of the Sus species had diets based on C3 plants,similar to the diets of large-and middle-sized deer.Zooarchaeological investigations suggested that domestic pigs were the predominant group,although some wild and feral pigs were also present.However,there were no significant differences detected regarding diet among the Sus population.Archaeobotanical studies indicated that the residents of Yuhuicun and the surrounding region primarily relied on gathering,with rice cultivation being limited in scale.Consequently,it was hypothesized that domestic pigs at Yuhuicun were managed loosely and fed with wild plants.A comparison of pig husbandry strategies among Yuhuicun,Houjiazhai,and Shuangdun sites revealed that pigs from all three archaeological sites had similar diets.Additionally,three individuals with a C4-based diet were identified as being introduced from an outside source.As Shuangdun was a central settlement in the area,it is likely that the people there had priority access to introduced food sources.This differentiation in diet is indicative of varying settlement patterns during this time period.
Shuangdun CultureYuhuicun siteStable isotopeSubsistence economyThe middle Huai River valley