Transhumance system of livelihood of the Brokpa pastoral nomads inhabiting in the yak tracts of Arunachal Pradesh with special emphasis on climate change adaptation was assessed in the present study. A representative sample of the 240 Brokpa pastoral nomads from all the yak rearing tracts of Arunachal Pradesh was selected randomly. The Brokpa pastoral nomads mainly depend upon livestock, like yak, yak-cattle hybrid etc, rearing for their livelihood. They perceived that season cycle has been changed in lower and mid altitude. They also perceived that onset of summer is getting started 1-2 month(s) earlier than before and also extended by 2-3 months. Therefore, Brokpa pastoral nomads of Arunachal Pradesh have expanded their migration duration by 2-3 months in searching of congenial environment for their livestock specially yak and yak-cattle hybrid. They adopted 10 coping mechanisms to cope up with negative impact of climate change. Among the coping mechanisms, ‘duration of migration has expanded by 2-3 months’ and ‘change in pasture utilization practice’ were found to be mostly adopted.

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