Between 1990 and 2010, China's forests, grasslands, and wetlands retained 17.29 PgC of carbon, with forests storing the most at 73.26%. While there was a slight decrease in carbon sequestration from 1990 to 2000, the period from 2000 to 2010 showed a slight increase. Forests are becoming more effective at capturing carbon, grasslands are stabilizing, and wetlands are improving despite still needing attention. Looking ahead to 2030, all scenarios project a significant increase in carbon sequestration services, mainly driven by forest growth. Grassy areas are forecasted to marginally reduce their carbon capture ability. Overall, China's primary terrestrial ecosystems are on track to play a pivotal role in storing more carbon in the coming years.