摘要
本研究分析了喜马拉雅北麓考古遗址出土的哺乳动物牙釉质锶同位素比值(87Sr/86Sr),探讨了青藏高原古代动物的迁移行为及其对区域文化交流的潜在影响.通过对4个关键遗址——格布赛鲁墓地、曲龙遗址、达玛墓地和温江多遗址——的大型哺乳动物牙齿样本进行锶同位素分析,发现动物个体的87Sr/86Sr存在显著差异,表明它们可能来源于不同的地理区域.通过分析牙釉质序列的87Sr/86Sr差异,确定了研究区迁移行为的阈值为87Sr/86Sr差异大于0.001,据此识别出具有显著迁移历史的个体.地理溯源分析揭示了动物来源多样,包括高原内部、边缘以及低海拔地区.这些发现表明,古代动物的迁移行为不仅促进了当地生计方式的多样化,而且加强了不同海拔区域间的联系,为高原丝绸之路的通行提供了支持.本研究为理解古代动物迁移在区域交流和青藏文化发展中的作用提供了新的视角.
Abstract
The successful adaptation of livestock to extreme high-altitude environments may have facilitated the formation of the agropastoral economy on the Tibetan Plateau.However,very little is known about how the ancient inhabitants of the plateau acquired and utilized animal resources.Here we analyze the strontium isotope ratios(87Sr/86Sr)in the teeth enamel of mammals excavated from archaeological sites on the northern slopes of the Himalayas,exploring the migration behavior of ancient animals on the Tibetan Plateau and their potential impacts on regional cultural exchanges.By conducting strontium isotope analysis on large mammal tooth samples from four key sites—Gebu Sailu cemetery(31.67° N,79.83°E),Khyung Lung site(31.07°N,80.56°E),Dama cemetery(28.27° N,91.23° E),and Von Cang Do site(29.43° N,90.95° E)—we found significant differences in the 87Sr/86Sr ratios among individual animals,indicating that they may have originated from different geographical regions.At the Gebusailu cemetery,the 87Sr/86Sr values for 13 animal individuals range between 0.710261 and 0.714808,with an average of 0.71257±0.00132.At the Von Cang Do site,the enamel 87Sr/86Sr values for 5 animal individuals range from 0.709520 to 0.715485,with an average of 0.71235±0.00246.The enamel 87Sr/86Sr sequence for 5 animals at the Khyung Lung site ranges from 0.711357 to 0.715658,with the sheep individual(Q3)having a range as high as 0.00409.The enamel 87Sr/86Sr sequences for yaks(D1 and D2)from the Dama cemetery are similar,with a range of less than 0.00070.Through the analysis of 87Sr/86Sr variations in enamel sequences,we determined the migration threshold for the study area to be a range of 87Sr/86Sr greater than 0.001,identifying individuals with significant migration histories.Geographic assignment analysis revealed diverse sources of animals,including the interior of the plateau,its margins,and the surrounding low-altitude regions.These findings suggest that the migration behavior of ancient animals not only diversified local subsistence strategies but also strengthened connections between different altitudinal zones,supporting the networks of the Silk Road on the plateau.This study provides new perspectives on the role of ancient animal migration in regional interactions and the development of Tibetan Plateau cultures.
维普
万方数据