Sanjiangyuan National Park carries out patrol in 2022(1/5)

Photo shows a herd of argali sheep at the source of the Yellow River section of the Sanjiangyuan National Park in Golog Tibetan autonomous prefecture of Northwest China's Qinghai province. (Photo: China News Service/Guo Qing)

The source of the Yellow River section of the Sanjiangyuan National Park started its first patrol in 2022 on Tuesday in order to better protect the ecological environment in this area.

Photo shows an eagle at the source of the Yellow River section of the Sanjiangyuan National Park in Golog Tibetan autonomous prefecture of Northwest China's Qinghai province. (Photo: China News Service/Guo Qing)

Photo shows two argali sheep at the source of the Yellow River section of the Sanjiangyuan National Park in Golog Tibetan autonomous prefecture of Northwest China's Qinghai province. (Photo: China News Service/Guo Qing)

Photo shows wolves at the source of the Yellow River section of the Sanjiangyuan National Park in Golog Tibetan autonomous prefecture of Northwest China's Qinghai province. (Photo: China News Service/Guo Qing)

A Tibetan donkey is saved during the first patrol at the source of the Yellow River section of the Sanjiangyuan National Park in Golog Tibetan autonomous prefecture of Northwest China's Qinghai province. (Photo: China News Service/Guo Qing)