Table 2.
Annual China’s available biomass feedstock allocation (explained in Supplementary Note 17) for bio-NETs (BIPP and/or BECCS) during 2020–2050.
| Groups | Scenarios | 2020–2030 | 2030–2050 |
|---|---|---|---|
| Moderate development of bio-NETs | Scenario 1 (S1) | – |
BECCS only crop residues used in BECCS increase from 0 to 80% by 2050 |
| Scenario 2 (S2) |
BIPP 11% of crop residues are used in BIPP for biochar sequestration and pyrolysis gas use |
BIPP + BECCS 11% of crop residues, used in BIPP for biochar sequestration and pyrolysis gas use, transitioned to BECCS gradually by transformation of BIPP to BECCS; crop residues in BECCS increase from 0 to 69% by 2050 |
|
| Scenario 3 (S3, base case) |
BIPP 33% of crop residues are used in BIPP for biochar sequestration and pyrolysis gas use |
BIPP + BECCS 33% of crop residues, used in BIPP for biochar sequestration and pyrolysis gas use, transitioned to BECCS gradually by transformation of BIPP to BECCS; crop residues in BECCS increase from 0 to 47% by 2050 |
|
| Scenario 4 (S4) |
BIPP 73% of crop residues are used in BIPP for biochar sequestration and pyrolysis gas use |
BIPP + BECCS 73% of crop residues, used in BIPP for biochar sequestration and pyrolysis gas use, transitioned to BECCS gradually by transformation of BIPP to BECCS; crop residues in BECCS increase from 0 to 7% by 2050 gradually |
|
| Scenario 5 (S5) |
BIPP 73% of crop residues are used in BIPP for biochar sequestration and pyrolysis gas use |
BIPP only 73% of crop residues are used in BIPP for biochar sequestration and pyrolysis gas use; crop residues in biochar increase from 0 to 7% by 2050 gradually |
|
| Maximum bio-NETs potentials | Scenario 6 (S6) |
BIPP 100% of crop residues are used in BIPP for biochar sequestration and pyrolysis gas use |
BIPP + BECCS 100% of crop residues, used in BIPP for biochar sequestration and pyrolysis gas use, transitioned to BECCS gradually by transformation of BIPP to BECCS |
| Scenario 7 (S7) |
BIPP 100% of biomass including crop residues, Miscanthus and forest residues are used in BIPP biochar sequestration and pyrolysis gas use |
BIPP + BECCS 100% of biomass including crop residues, Miscanthus and forest residues, used in BIPP for biochar sequestration and pyrolysis gas use, transitioned to BECCS gradually by transformation of BIPP to BECCS |