| year | | Physical quantity | The year in which data was collected. |
| site | | Nominal | Samples are collected from four different sites. |
| treatment | | Code list | A code denoting burn treatment. |
| plot | | Nominal | A code indicating sample plot 1-7, specified as A-G. |
| sample_num | | Physical quantity | Replicate (1-5) clipped plots. |
| string_num | | Nominal | There are three blocks of seven sample plots (A-G) at each site (B, S, M, N). |
| plant_category | | Code list | Biomass sample for specific plant category. |
| weight | | Physical quantity | Weight of dried, sorted sample. |
| complete_code | | Nominal | A code that combines site, block, plot, fire treatment, etc. |
