1. **Sex ratio: migration, male dominated migration in the region: find papers that tell the same, data says something like this.
Imbalanced sex ratios can indicate gender-based discrimination, skewed birth rates, or migration trends, I have not looked for birth rates so explain with migration for now and if still a question figure it out later.
A rising sex ratio may reflect better health care, education, and reduced gender bias > what is going in Changthang now, 2011 census data is a bit old.
Skewed sex ratios due to male-dominated migration (e.g., in border or pastoral regions) can reshape household structures and labor divisions, this seems like the reason for now.
2. Population Growth and Change
This one is also without birth rates so just find other papers that relate to this:
Definition: Change in total population over time due to births, deaths, and migration. You need your own definition from census.
Transformation Insight:
Declining or rising growth rates signal socio-economic shifts (e.g., better access to health care, changing fertility behavior, urban pull factors).
Migration-induced population change often reflects shifts in livelihood patterns, conflict, environmental change, or infrastructure development.