Sustainable Food Systems in China: A New Study Examines the Carbon Emissions and Net Carbon Sinks

Strategic Insights -

A comprehensive study on sustainable food systems has been published, examining the carbon emissions and net carbon sinks associated with cropland utilization in China. The research, conducted by researchers from Huanghuai University, analyzed data from 31 provinces, cities, and districts over the period from 1991 to 2022. The study found that China's carbon emissions from arable land use have been declining since 2016, with a significant reduction in the number of Tier 1 and Tier 2 carbon-emitting provinces and municipalities. The study also found that China's net carbon sinks from arable land use are in a high growth phase, with most provinces in the main grain-producing regions located in high-sink and high-yield areas.

Key Takeaways:

  • China's carbon emissions from arable land use have been declining since 2016, with a reduction from 21 provinces and municipalities in 1991 to 13 by 2022.
  • The number of Tier 1 and Tier 2 carbon-emitting provinces and municipalities has decreased from 21 to 13 over the same period.
  • China's net carbon sinks from arable land use are in a high growth phase, with significant increases in the net carbon sinks of each province compared to the previous period.
  • Most provinces in the main grain-producing regions are located in high-sink and high-yield areas.
  • The coupling status of each province is more diversified, with the net carbon sink being coupled with grain production since 2004.

Statistics:

  • 21 provinces and municipalities had high carbon emissions in 1991.
  • This number decreased to 13 by 2022.
  • China's net carbon sinks from arable land use have increased significantly compared to the previous period, with an average annual growth rate.
  • The high average annual net carbon sinks are spatially dispersed, with most provinces in the main grain-producing regions located in high-sink and high-yield areas.

Sources:

  • Research on the spatial and temporal evolution and coupling effects of carbon emissions and net carbon sinks on arable land in China. Frontiers in Sustainable Food Systems, 2025,9.
  • Frontiers in Sustainable Food Systems - https://www.frontiersin.org/journals/sustainable-food-systems#
  • doi-org.sdpl.idm.oclc.org/10.3389/fsufs.2025.1642160
  • Xiaofan Wang, Huanghuai University, Zhumadian, People's Republic of China.