Fig. 5: Carbon isotopic results of fatty acids.

a δ13C16:0 and δ13C18:0 values of modern references and ancient animal bones on the southern Tibetan Plateau34 (Supplementary Information Table S2) and in this study (Supplementary Information Table S3); b δ13C16:0 and δ13C18:0 values of pottery residues and local references at Mabu Co. (Dash line refers to global reference range of non-ruminant and ruminant adipose fats, drawn based on Suryanarayan et al.47). Δ13C = δ13C18:0-δ13C16:0.