Claim · model-written summary
Biochar increased soil carbon sequestration more under alternate wetting and drying than continuous flooding.
- Taxon
- rice
Oryza sativat0 - Treatment
- Biochare0
- Outcome
- SOCS and SOCS ratee0
- Direction
- increasee0
- Qualifier
- under I AWDe0
- Comparator
- I CFe0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleSettingValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Biochar can increase SOCS and SOCS rate more remarkably under I AWD than I CF”
t0“converts rice paddy into carbon negative”
Title
Chang Liu; Taotao Chen; Feng Zhang; et al. Agricultural Water Management 2024. doi:10.1016/j.agwat.2024.108908
Other claims from this paper (18)
- Intervention effect Alternate wetting and drying reduced CH 4 emissions by 73 %.
- Intervention effect Alternate wetting and drying reduced GWP by 69 %.
- Intervention effect Alternate wetting and drying reduced greenhouse gas emission intensity (GHGI) by 69 %.
- Intervention effect Alternate wetting and drying increased N 2 O emissions by 109 %.
- Intervention effect Biochar inhibited N 2 O emissions by 31% over three years.
- Intervention effect Biochar increased grain yield by 5 % in the 2nd year.
- Intervention effect Biochar increased grain yield by 11 % in the 3rd year.
- Intervention effect Biochar reduced CH 4 emissions by 22 % in the 2nd year.
- Intervention effect Biochar reduced CH 4 emissions by 38 % in the 3rd year.
- Intervention effect Biochar lowered grain yield by 6% in the first year.
- Intervention effect Biochar with alternate wetting and drying gave the highest SOCS, 56.9 t C ha −1.
- Intervention effect Biochar with alternate wetting and drying gave the lowest net GWP, -23.0 t CO 2 -eq ha −1.
- Intervention effect Biochar with alternate wetting and drying inhibited the irrigation-induced increase in N 2 O emissions.
- Intervention effect Flooding plus biochar decreased net GWP by nearly four times relative to flooding without biochar.
- Intervention effect Alternate wetting and drying plus biochar decreased net GWP by nearly eight times relative to flooding without biochar.
- Intervention effect Flooding plus biochar achieved SOCS of 48.3 t C ha −1.
- Intervention effect Alternate wetting and drying plus biochar achieved SOCS of 56.9 t C ha −1.
- Recommendation The authors recommend biochar with alternate wetting and drying to mitigate greenhouse gas emissions and promote soil carbon sequestration.