The aboveground and belowground biomass in CLM

[xiaoxiaokuishu]

Hi, all
I would like to get the aboveground and belowground biomass in CLM( I use BGC-crop mode).
To my knowledge, there is no biomass related variable, juts carbon.
I have some questions:

(1) TOTVEGC is aboveground biomass or above+below ground biomass?

is TOTVEGC=LEAFC+ LIVESTEMC+ DEADSTEMC?

(2) WOODC+FROOTC belongs to belowground biomass?
if not, which variable is belowground biomass?

(3) TOTSOMC is the carbon in soil, has nothing to do with biomass right?

Best

 

[oleson]

(1) above+below ground biomass. You can look at the code in CNVegCarbonStateType.F90 to see what the components are, e.g.,

this%totvegc_patch(p) = &
this%dispvegc_patch(p) + &
this%storvegc_patch(p)

And:

! displayed vegetation carbon, excluding storage and cpool (DISPVEGC)
this%dispvegc_patch(p) = &
this%leafc_patch(p) + &
this%frootc_patch(p) + &
this%livestemc_patch(p) + &
this%deadstemc_patch(p) + &
this%livecrootc_patch(p) + &
this%deadcrootc_patch(p)

! stored vegetation carbon, excluding cpool (STORVEGC)
this%storvegc_patch(p) = &
this%cpool_patch(p) + &
this%leafc_storage_patch(p) + &
this%frootc_storage_patch(p) + &
this%livestemc_storage_patch(p) + &
this%deadstemc_storage_patch(p) + &
this%livecrootc_storage_patch(p) + &
this%deadcrootc_storage_patch(p) + &
this%leafc_xfer_patch(p) + &
this%frootc_xfer_patch(p) + &
this%livestemc_xfer_patch(p) + &
this%deadstemc_xfer_patch(p) + &
this%livecrootc_xfer_patch(p) + &
this%deadcrootc_xfer_patch(p) + &
this%gresp_storage_patch(p) + &
this%gresp_xfer_patch(p)

So, TOTVEGC will include leaf, fine and coarse roots, stem, ...

(2)
! (WOODC) - wood C
this%woodc_patch(p) = &
this%deadstemc_patch(p) + &
this%livestemc_patch(p) + &
this%deadcrootc_patch(p) + &
this%livecrootc_patch(p)

FROOTC is fine root carbon, not included in WOODC.

(3) It is soil organic matter, "decomposing (litter, cwd, soil) c pools"