Observers call for his release, saying he followed Chinese law in promoting his mother tongue.
Dashar, a resident of Sershul county in Sichuan's Kardze prefecture, had been jailed for 10 years for his role in protests in Lhasa in 2008.
They are told not to visit monasteries or attend religious gatherings during the Buddhist holy month of Saga Dawa.
Chinese authorities fear the spread of 'separatist' sentiment inspired by exiled spiritual leader the Dalai Lama.
Already partially fenced for farming, the grazing land is now being taken for development, a local source says.
The representative of the Trump administration to India calls the spiritual leader 'inspirational,' voices hope he may soon visit the US.