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 |
