Table 1.

Environmental parameters of the three sampling sites for Tibetan sheep

Group	Sampling Site	Altitude (m)	Mean July Temperature (°C)	O2 Partial Pressure (kPa / % of Sea Level)	Grassland Type	Dominant Forage Species
QL	Quao Town, Xiahe County	~ 2500	9.0–22.0	~ 15.7 / ~74%	Alpine steppe	Kobresia, Stipa
QM	Oula Town, Maqu County	~ 3500	6.0–17.0	~ 13.8 / ~65%	Alpine steppe / Alpine meadow	Kobresia, Stipa
QH	Huashixia Town, Maduo County	~ 4500	4.0–16.0	~ 12.1 / ~57%	Alpine steppe	Kobresia, Stipa

Data on altitude and temperature were obtained from local government official websites. Partial pressure of oxygen was derived from reference [14]. Information on grassland types and dominant forage species was cited from references [26, 27]