The study looked at how human activities affect soil conservation in alpine grasslands on the Qinghai-Tibet Plateau. By using a wind tunnel, researchers simulated soil erosion under different scenarios. They found that higher soil erosion leads to lower soil conservation. Cutting surface vegetation increased erosion rates, while breaking root systems caused varying erosion rates. Alpine meadows had the best soil conservation function, followed by alpine steppe meadows and alpine steppes. After simulating erosion, the levels of organic matter and nutrients decreased, especially potassium. The economic value of nutrient retention was highest, while the economic value of soil deposit decrease was lowest. Overall, alpine steppe meadows had the highest total economic value per unit area, followed by alpine meadows and alpine steppes.