Non‐Continuous Flooding Outperforms Continuous Flooding in Rice Fields Net Carbon Sequestration Despite Losses in Soil Organic Carbon Sequestration DOI
Yu Hou, Jingwen Zhang, Junjie Guo

et al.

Global Change Biology, Journal Year: 2025, Volume and Issue: 31(6)

Published: June 1, 2025

ABSTRACT Rice feeds more than 50% of the global population with significant greenhouse gas (GHG) emissions. Non‐continuous flooding (NCF) has been recognized as an effective practice for stabilizing rice yields, conserving water, and reducing GHG emissions from fields. However, impacts NCF on net carbon sequestration (NCS, defined total ecosystem equivalent) in fields, including CH 4 emissions, N 2 O photosynthetic linked to crop yield, soil organic (SOC) sequestration, have rarely quantified comprehensively. This limitation hinders a complete understanding overall processes through which affects NCS. study conducted meta‐analysis 1075 data pairs 72 studies worldwide quantify effects equivalent components its NCS benefits. Results showed that compared continuous (CF), significantly increased average per growing season by 4615 kg CO ‐eq·ha −1 (95% CIs: 468 8761, p = 0.031). Specifically, reduced 45.72% 35.77%, insignificant increase 1.93% 3.16% respectively. The ΔSOC (changes SOC concentration before after season) decreased mean difference effect size −0.36 −0.70 −0.02), indicating smaller changes NCF. Meta‐regression random forest importance analyses were used explore climatic properties management practices components. Implementing controlled irrigation appropriate water input could achieve win‐win situation enhancing yield while mitigating GWP Y‐GWP. further all benefits providing guidance dual goals.

Language: Английский

Responses of soil reactive nitrogen losses and nitrogen pools to straw mulching DOI

Kaihong Zhang,

Hongbo Peng, Bing Xu

et al.

Soil and Tillage Research, Journal Year: 2025, Volume and Issue: 250, P. 106499 - 106499

Published: Feb. 26, 2025

Language: Английский

Citations

1
Improving gap-filling methods for CH4 fluxes of eddy covariance data by combining marginal distribution sampling and machine learning algorithm over paddy fields DOI

Linhua Ma,

Qianan Yu,

Yuanlai Cui

et al.

Journal of Cleaner Production, Journal Year: 2025, Volume and Issue: 510, P. 145615 - 145615

Published: April 28, 2025

Language: Английский

Citations

0
Analysis of Temporal and Spatial Evolution Characteristics and Peak Prediction of Carbon Emissions in China Under the Dual-Carbon Target: A Case Study of Heilongjiang Province DOI Creative Commons

Zhongyang Yu,

Mingcong Zhang,

Yingce Zhan

et al.

Agriculture, Journal Year: 2025, Volume and Issue: 15(11), P. 1126 - 1126

Published: May 23, 2025

As the leading grain-producing region in China, Heilongjiang Province is crucial to country’s food security. Thus, determining Heilongjiang’s agricultural carbon emissions status and trend projections provides a baseline for supporting low-carbon emission reduction this sector. This study analyzes from crop farming farmland soil 2003 2022, focusing on two sources: land use soil. BP neural network model, factor coefficient approach, Tapio decoupling framework, LMDI model are used. These findings show that planting industry initially increased then decreased, with chemical fertilizers rice being main sources. Harbin, Qiqihar, Jiamusi, Suihua contribute significantly farming. In “weak decoupling-expanding negative decoupling-strong decoupling,” economic levels drive emissions, while production efficiency key countermeasure. Qiqihar will not peak between 2023 2030, other 12 cities will. Therefore, these emission-reduction proposals presented: Restructuring (increasing drought-resistant cold-climate crops), optimizing fertilization (soil testing organic fertilizers), improving resource utilization can help achieve “food security, ecological preservation, development” its practices.

Language: Английский

Citations

0
High-Standard Farmland Construction Policy, Agricultural New-Quality Productivity, and Greenhouse Gas Emissions from Crop Cultivation: Evidence from China DOI Creative Commons
Ying Wang, Jiaqi Li,

Yiqi Fan

et al.

Land, Journal Year: 2025, Volume and Issue: 14(6), P. 1157 - 1157

Published: May 27, 2025

China faces the dual challenges of mitigating greenhouse gas emissions and ensuring food security. Given that crop cultivation constitutes a major source agricultural emissions, analyzing emission reduction impact China’s high-standard farmland construction (HSFC) policy, crucial security initiative, holds significant importance. This study calculates from (CGHGE) life cycle assessment (LCA) perspective evaluates new-quality productivity level across 31 regions in 2005 to 2022. Subsequently, this utilizes continuous difference-in-differences (DID) model examine HSFC policy on CGHGE per unit area. Furthermore, mediating role relationship between policies area was examined. The results show can significantly mitigate growth area, with an average annual 62.88%. regional heterogeneity analysis indicates exerts statistically negative effects both western eastern China. tests demonstrate HSFC’s are particularly pronounced grain-producing regions. contributes reductions by enhancing productive forces, which subsequently lead lower CGHGE. findings suggest governments should implement differentiated targeted for HSFC, particular emphasis reducing

Language: Английский

Citations

0
Non‐Continuous Flooding Outperforms Continuous Flooding in Rice Fields Net Carbon Sequestration Despite Losses in Soil Organic Carbon Sequestration DOI
Yu Hou, Jingwen Zhang, Junjie Guo

et al.

Global Change Biology, Journal Year: 2025, Volume and Issue: 31(6)

Published: June 1, 2025

ABSTRACT Rice feeds more than 50% of the global population with significant greenhouse gas (GHG) emissions. Non‐continuous flooding (NCF) has been recognized as an effective practice for stabilizing rice yields, conserving water, and reducing GHG emissions from fields. However, impacts NCF on net carbon sequestration (NCS, defined total ecosystem equivalent) in fields, including CH 4 emissions, N 2 O photosynthetic linked to crop yield, soil organic (SOC) sequestration, have rarely quantified comprehensively. This limitation hinders a complete understanding overall processes through which affects NCS. study conducted meta‐analysis 1075 data pairs 72 studies worldwide quantify effects equivalent components its NCS benefits. Results showed that compared continuous (CF), significantly increased average per growing season by 4615 kg CO ‐eq·ha −1 (95% CIs: 468 8761, p = 0.031). Specifically, reduced 45.72% 35.77%, insignificant increase 1.93% 3.16% respectively. The ΔSOC (changes SOC concentration before after season) decreased mean difference effect size −0.36 −0.70 −0.02), indicating smaller changes NCF. Meta‐regression random forest importance analyses were used explore climatic properties management practices components. Implementing controlled irrigation appropriate water input could achieve win‐win situation enhancing yield while mitigating GWP Y‐GWP. further all benefits providing guidance dual goals.

Language: Английский

Citations

0