The annual migration of Tibetan antelopes has begun in the Hoh Xil Nature Reserve, with the first herd of 158 animals crossing the heart of the sanctuary on Thursday.
Local authorities announced the start of the migration on Saturday. The first group crossed the Qinghai-Tibet Highway near the Wudaoliang protection station amid a snowstorm. This number marks a notable rise from last year's initial cluster of about 60 animals.
Female Tibetan antelopes from Qinghai, Xizang and Xinjiang travel each May to Zonag Lake to give birth. They return to their home ranges in July. The current population in Hoh Xil exceeds 70,000.
Danzeng Caidan, head of the Sonam Dargye Ecological police station, said patrols along the highway have increased. Authorities have introduced 24-hour monitoring and temporary traffic controls. He added that vehicle flow is being managed and public education provided to limit human interference.
The Hoh Xil Nature Reserve Protection Bureau has deployed officers to oversee the main crossing area on the highway.