'Space-sky-ground' monitoring system safeguards rare Tibetan antelopes' breeding and migration journey in Xizang
Tibetan antelopes eating grass in Nagqu, southwest China's Xizang Autonomous Region, on July 4th. Photo: VCGOn the grasslands of Nagqu in Southwest China's Xizang Autonomous Region, where large numbers of pregnant Tibetan antelopes arrive from …