When did Xinjiang grassland overgrazing begin?

1. Due to overgrazing and other reasons, Yili grassland began to degrade, and the soil and water conservation capacity in some areas declined, becoming a natural disaster-prone area such as mudslides.

2. Xinjiang Uygur Autonomous Region, referred to as "Xin" for short, with Urumqi as its capital, is located in the northwest of China and is one of the five minority autonomous regions in China.