Soil Degradation in Northwest Sichuan's Alpine Grassland: A Critical Issue for China's Grazing Regions

The alpine grassland in northwest Sichuan is one of China's five primary grazing regions. Its soil degradation is caused by a combination of factors, including geographical environment, climate change, and human activities. This degradation is characterized by soil grains that are loose and unstructured, poor fertility, and poor water and fertilizer retention performance. Studies conducted by Zhou et al. (2008) and Ma et al. (2020) have confirmed the severity of this issue.