Why is Qinghai province vast and sparsely populated?

The reasons for the sparse population in Qinghai Province are as follows:

1. is located in the alpine region, with little precipitation, which can adapt to the scarcity of crops, grow slowly and cannot live in large quantities.

2. Most of Qinghai's population is concentrated in the east, basically around Qinghai Lake. In the Qing dynasty, there was no provincial system in the border areas, which was very difficult to manage.

To sum up, the reasons for the sparse population in Qinghai Province are mainly poor natural conditions and historical reasons.