> For the complete documentation index, see [llms.txt](https://swatplus.gitbook.io/io-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://swatplus.gitbook.io/io-docs/introduction-1/basin-1/codes.bsn/carbon.md).

# carbon

| Code | Option                       |
| ---- | ---------------------------- |
| 0    | Static soil carbon           |
| 1    | C-FARM one carbon pool model |
| 2    | Century model                |

> Papers Xuesong, Armen