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重庆忠县中坝遗址T0202探方出土近20万件动物骨骼,经对其中129165块骨骼标本归类分析发现,这些骨骼可归为哺乳类、鱼类、鸟类、两栖类和爬行类这5大类,共有13目28科42属.在考古断代和AMS14C测年基础上,通过对出土骨骼统计分析和最小个体数变化研究发现:(1)中坝地区在2370～200BC绝大部分时间均有分布的动物主要是栖息林间和草地的鹿、毛冠鹿、麂,先民饲养的猪和狗,啮齿类的兔和黑家鼠,表明本区在该阶段基本上存在着良好的森林和草地生态环境,先民饲养家畜从1750～1000BC就已开始,并一直延续了下来;(2)犀牛只在2000～1750,1000～700和700～500BC阶段出现,表明这几个阶段草地和湿地生态环境可能更好一些;(3)而猴和棕熊只在1750～1000BC以后出现,可能表明1750～200BC期间森林条件更为优越,有利于林栖动物生长;(4)水牛和牛以及水獭最小个体数出现在2370～1750BC可能暗示早期水域面积比后期更广;(5)中坝遗址在2000～1750和1000～500BC的地层中,均发现有犀牛骨骼,根据现生犀牛所处的气候与生态环境分析,可初步推测在2000～1750和1000～500BC时中坝年平均气温及降水量可能比现今要高.1100～850BC虽然处于竺可桢先生提出的五千年来的第一个低温期,但大九湖泥炭地层揭示的该时期仍存在有大量桑属、榆、水青冈、栎、栗等孢粉,应表明至少在大九湖和中坝遗址地区气候仍然较为适宜;(6)中坝遗址在310～200BC出土了白唇鹿骨骼,根据现生白唇鹿所处的气候与生态环境分析,可初步推测在310～200BC期间中坝地区年平均气温和降水量比现今要低.前人对中坝遗址地层有机碳含量的研究亦证实了这一点.
Nearly 200,000 animal bones have been excavated from T0202, Zhongba ruins, Zhongxian County, Chongqing. The classification of 129,165 skeletal specimens found that these bones can be classified as mammals, fishes, birds, amphibians and reptiles A total of 13 orders, 28 families and 42 genera.According to the archeological dating and AMS14C dating, through the statistical analysis of the unearthed bones and the study of the minimum number of individuals, it is found that: (1) in the dam area in 2370 ~ 200BC most of the time Deer, tufted deer, muntjacs, ancestors of pigs and dogs, rodent rabbits and black house rats, with predominantly distributed animals in habitats and grasslands, indicate that there is essentially good forest and grassland at this stage in the district Ecological environment, the ancestors raising livestock from 1750 ~ 1000BC has started, and has been continued; (2) rhino only in 2000 ~ 1750,1000 ~ 700 and 700 ~ 500BC stage, indicating that these stages of grassland and wetland ecology The environment may be better; (3) while the monkeys and brown bears only appear after 1750 ~ 1000BC, which may indicate that the forest conditions are superior during the period of 1750 ~ 200BC, which is good for the growth of forest animals; (4) The minimum number of buffalo and cattle and otter Appear in 2370 ~ 1750BC may suggest The area of early water area is wider than later period; (5) Rhino bones are found in the strata of Zhongba site in 2000 ~ 1750 and 1000 ~ 500BC. According to the climate and ecological environment analysis of the living rhinoceros, ~ 1750 and 1000 ~ 500BC, mean annual temperature and precipitation in the middle dam may be higher than today.However, although the first low-temperature period of 5,000 years was proposed by Mr. Zhu Kezhen, There are still a large number of mulberry genus, elm, Fagus, oak, chestnut and other sporopollen, should show that at least in the Great Nine Lake and the dam site climate is still more appropriate; (6) dam site unearthed in 310 ~ 200BC white-lipped deer According to the climatic and ecological analysis of the present-day white-lipped deer, it can be preliminarily speculated that the average annual temperature and precipitation in the Zhongba area will be lower than those of today during the period of 310-200BC. The previous studies on the organic carbon content of the Zhongba site Confirmed this.