Potential of Biochar to Reduce Greenhouse Gas Emissions and Increase Nitrogen Use Efficiency in Boreal Arable Soils in the Long-Term DOI Creative Commons
Subin Kalu, Liisa Kulmala, Jure Zrim

et al.

Frontiers in Environmental Science, Journal Year: 2022, Volume and Issue: 10

Published: May 17, 2022

Biochars have potential to provide agricultural and environmental benefits such as increasing soil carbon sequestration, crop yield, fertility while reducing greenhouse gas (GHG) emissions nitrogen leaching. However, whether these effects will sustain for the long-term is still unknown. Moreover, were observed mostly in highly weathered (sub-) tropical soils with low pH organic (SOC). The northern colder boreal regions typically higher SOC undergo continuous freeze-thaw cycles. Therefore, of biochars may be different from those other climates. only a few biochar studies been conducted regions. We aimed assess on GHG emissions, yield-normalized non-CO 2 (GHGI), N dynamics soils. For this, we collected data four existing Finnish field experiments during 2018 growing season. Jokioinen (Stagnosol), Qvidja (Cambisol), Viikki-1 Viikki-2 (Umbrisol), where applied, 2, 8, 7 years before, respectively. mineral N, microbial biomass measured all fields, whereas, additional measurements plant contents leaching Qvidja. increased CO efflux Viikki-2, there no statistically significant fluxes O or CH 4 , but Qvidja, tended reduce at peak emission points. tendency seemed silt content lower initial carbon. demonstrated yield by 65% reduced GHGI 43% Viikki-2. In increment biomass, uptake, use efficiency, reduction NO 3 − –N spruce attributed its ability retain –N, which could linked significantly specific surface area. hence losses, has implications sustainable management fertilization.

Language: Английский

Achieving net-zero emissions in agriculture: a review DOI Creative Commons
Lorenzo Rosa, Paolo Gabrielli

Environmental Research Letters, Journal Year: 2023, Volume and Issue: 18(6), P. 063002 - 063002

Published: May 16, 2023

Abstract Agriculture accounts for 12% of global annual greenhouse gas (GHG) emissions (7.1 Gt CO 2 equivalent), primarily through non-CO emissions, namely methane (54%), nitrous oxide (28%), and carbon dioxide (18%). Thus, agriculture contributes significantly to climate change is impacted by its consequences. Here, we present a review technologies innovations reducing GHG in agriculture. These include decarbonizing on-farm energy use, adopting nitrogen fertilizers management technologies, alternative rice cultivation methods, feeding breeding enteric methane. Combined, all these measures can reduce agricultural up 45%. However, residual 3.8 equivalent per year will require offsets from removal make net-zero. Bioenergy with capture storage enhanced rock weathering are particularly promising techniques, as they be implemented within result permanent sequestration. While net-zero technically available, come price premium over the status quo have limited adoption. Further research development needed such more affordable scalable understand their synergies wider socio-environmental impacts. With support incentives, transition significant emitter sink. This study may serve blueprint identify areas where further investments accelerate

Language: Английский

Citations

70
Quantifying nitrous oxide production rates from nitrification and denitrification under various moisture conditions in agricultural soils: Laboratory study and literature synthesis DOI Creative Commons
Hui Wang, Zhifeng Yan, Xiaotang Ju

et al.

Frontiers in Microbiology, Journal Year: 2023, Volume and Issue: 13

Published: Jan. 12, 2023

Biogenic nitrous oxide (N2O) from nitrification and denitrification in agricultural soils is a major source of N2O the atmosphere, its flux changes significantly with soil moisture condition. However, quantitative relationship between production different pathways (i.e., vs. denitrification) content remains elusive, limiting our ability predicting future emissions under changing environment. This study quantified rates various conditions using laboratory incubation combined literature synthesis. 15N labeling approach was used to differentiate eight contents ranging 40 120% water-filled pore space (WFPS) study, while 80 groups data 17 studies across global were collected Results showed that as increased, first increased then decreased, peak occurring 95% WFPS. By contrast, dominant pathway switched 60 70% Furthermore, synthetic elucidated driver controlling relative contributions production, NH4 + NO3 - concentrations mainly determined each pathway. The treatments broad narrow gradient required capture comprehensive response rate change, essential for accurately emission climate change scenarios.

Language: Английский

Citations

50
Greenhouse gas emissions from US irrigation pumping and implications for climate-smart irrigation policy DOI Creative Commons
Avery W. Driscoll, Richard T. Conant, Landon Marston

et al.

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: Jan. 23, 2024

Abstract Irrigation reduces crop vulnerability to drought and heat stress thus is a promising climate change adaptation strategy. However, irrigation also produces greenhouse gas emissions through pump energy use. To assess potential conflicts between adaptive expansion agricultural mitigation efforts, we calculated county-level from use in the US using fuel expenditures, prices, factors. produced 12.6 million metric tonnes CO 2 e 2018 (90% CI: 10.4, 15.0), predominantly attributable groundwater pumping. Groundwater reliance, irrigated area extent, water demand, choice, electrical grid intensity drove spatial heterogeneity emissions. Due heavy reliance on pumps, projected reductions are estimated reduce pumping by 46% 2050, with further possible electrification. Quantification of irrigation-related will enable targeted reduction efforts climate-smart expansion.

Language: Английский

Citations

20
The global potential for mitigating nitrous oxide emissions from croplands DOI Creative Commons
Xiaoqing Cui, Yan Bo,

Wulahati Adalibieke

et al.

One Earth, Journal Year: 2024, Volume and Issue: 7(3), P. 401 - 420

Published: March 1, 2024

Language: Английский

Citations

17
Carbon Cycling in Global Drylands DOI
Rattan Lal

Current Climate Change Reports, Journal Year: 2019, Volume and Issue: 5(3), P. 221 - 232

Published: May 29, 2019

Language: Английский

Citations

124
Cover Crops Could Offset Crop Residue Removal Effects on Soil Carbon and Other Properties: A Review DOI
Sabrina J. Ruis, Humberto Blanco‐Canqui

Agronomy Journal, Journal Year: 2017, Volume and Issue: 109(5), P. 1785 - 1805

Published: Aug. 3, 2017

Core Ideas Corn residue removal reduces soil organic C stocks and other properties. Cover crop increases may not offset losses from in the short term. More data are needed on cover effects properties after removal. Crop for livestock or biofuel production is common. Excessive reduce carbon (SOC) (CC) could be a strategy to ameliorate negative of removal, but this has been widely discussed. We synthesized studies impacts CC addition following SOC related properties, discussed opportunities challenges using highlighted research needs. first briefly reviewed separate before reviewing their combined effects. Our review found that ≥50% reduced by 0.87 Mg ha −1 yr <50% 0.31 . However, increased 0.49 , suggesting at least part lost with Studies evaluating few term (<6 yr) appeared show limited potential some indicated trends SOC, long While exist integrate use, including low biomass reduction yield water‐limited regions must addressed. Further interactive across different cropping systems climates.

Language: Английский

Citations

116
Impact of irrigation and fertilization regimes on greenhouse gas emissions from soil of mulching cultivated maize (Zea mays L.) field in the upper reaches of Yellow River, China DOI
Changjian Li, Yunwu Xiong, Quanzhong Huang

et al.

Journal of Cleaner Production, Journal Year: 2020, Volume and Issue: 259, P. 120873 - 120873

Published: March 9, 2020

Language: Английский

Citations

105
Lowering carbon footprint of winter wheat by improving management practices in North China Plain DOI
Zhanbiao Wang, Hai‐Lin Zhang, Xiaohong Lu

et al.

Journal of Cleaner Production, Journal Year: 2015, Volume and Issue: 112, P. 149 - 157

Published: June 25, 2015

Language: Английский

Citations

101
Management practices to reduce losses or increase soil carbon stocks in temperate grazed grasslands: New Zealand as a case study DOI
David Whitehead, Louis A. Schipper,

Jack Pronger

et al.

Agriculture Ecosystems & Environment, Journal Year: 2018, Volume and Issue: 265, P. 432 - 443

Published: July 7, 2018

Language: Английский

Citations

98
Mitigated CH 4 and N 2 O emissions and improved irrigation water use efficiency in winter wheat field with surface drip irrigation in the North China Plain DOI

Guangshuai Wang,

Yueping Liang,

Qian Zhang

et al.

Agricultural Water Management, Journal Year: 2015, Volume and Issue: 163, P. 403 - 407

Published: Nov. 3, 2015

Language: Английский

Citations

97