中文摘要：

碳和氧哺乳动物的牙齿瓷釉的同位素的作文包括从 Shunshanji 地点的鹿，野生的猪，公牛和驯养的猪， Sihong 县，江苏省，中国，被分析重建，并且在学习区域评估季节的变化哺乳动物 ecoenvironments 和食谱。牡鹿样品的碳同位素的作文表明鹿完全吃了 C3 植物，他们住在的环境是相对开的并且野生的猪首先吃了 C3 植物。氧同位素的作文显示这二个哺乳动物的身体来源是不同的，即鹿和猪在一个相对类似的生态系统以内住在不同壁龛。现代的驯养的猪是同位素地比在碳 13C 价值的古老的野生的猪更积极，建议前者相对后者摄取了更多的 C3 植物。尽管 18O 数据出现了现代驯养，古老的猪有类似的氧同位素作文，他们的水来源是不同的。古老、现代的公牛的前臼齿 microsamples 的同位素的模式显示了的碳和氧古老的公牛摄取的植物与季节的移动变化了，但是植物由现代公牛摄取了，这是相对不变的。现代公牛的 eco 环境是更多比古老的公牛的 eco 环境开、更温暖、干燥，它可以是采伐森林和另外的人的活动的结果。古老、现代的季节的变化清楚地在同位素的模式被记录，古老、现代的 eco 环境的季节的变化振幅是类似的。

英文摘要：

The carbon and oxygen isotopic compositions of the tooth enamel of mammals, including deer, wild pigs, buffaloes and domesti- cated pigs from the Shunshanji site, Sihong County, Jiangsu Province, China, were analyzed to reconstruct the mammals＇ eco- environments and diets, and to evaluate seasonal variations in the study area. Carbon isotopic compositions of buck samples re- vealed that the deer ate completely C3 plants and the environments they inhabited were relatively open and that wild pigs ate pri- marily C3 plants. Oxygen isotopic compositions indicated that the body sources of these two mammals were different, i.e. the deer and pigs lived in different niches within a relatively similar ecosystem. Modem domesticated pigs were isotopically more positive than the ancient wild pigs in carbon ~13C values, suggesting the former ingested more C3 plants relative to the latter. Although the 6180 data showed modern domesticated and ancient pigs had similar oxygen isotope compositions, their water sources were dif- ferent. The carbon and oxygen isotopic patterns of premolar microsamples of ancient and modem buffaloes indicated that the plants ingested by the ancient buffalo varied with seasonal shifts, but plants ingested by the modem buffalo were relatively con- stant. The eco-environment of the modem buffalo was more open, warmer and drier than eco-environment of the ancient buffalo, which may be the result of the deforestation and other human activities. Ancient and modern seasonal changes were clearly rec- orded in the isotopic patterns and the seasonal variation amplitudes of the ancient and modern eco-environments were similar.