Agricultural production (GHG from soils and livestock management) account for about 10%-14% anthropogenic GHG emissions.
Global potential for soil GHG mitigation: 1.5 to 5.3 Pg yr-1 and could be as high as 8 Pg C yr-1.
So there is a great potential to increase carbon sink in ag soils.
Therefore, ag soils have great potential to win the time window for the "double peak" policy of China (CO2 emission reaches peak at 2030 and Carbon Neutral at 2060).
Scientific questions:
The most suitable measures to increase agricultural soils carbon sink in different parts of China?
The machanism for carbon sequestration of different measures?
Improve the existing technology to increase soil carbon sequestration (e.g., deep roots cover crop species by genetic breeding)?
The carbon stability of increased carbon, how long it can remain in the soils?
Usually develop 4 research objectives to answer 2 specific questions.
Topic 2: SOM models
Loess Plateau: Loess soil depth could up to 100 m, severe soil erosion, high-intensity anthropogenic disturbance.
Specific questions:
How about the performance of the existing SOM models in Loess Plateau?
The performance of ELM-Erosion and ORCHIDEE-MUSLE at loess plateau.
Necessary developement to make the mdoels ELM-Erosion and ORCHIDEE-MUSLE suitable at Loess plateau.
The process is very complicate, and more importantly, it is still on debate of whether soil erosion is a carbon sink or source?
Topic 1: Agriculture soil carbon sequestration
Scientific questions:
Usually develop 4 research objectives to answer 2 specific questions.
Topic 2: SOM models
Specific questions: