气候变化领域集成服务门户(CCPortal): Balancing Non-CO2 GHG Emissions and Soil Carbon Change in US Rice Paddies: A Retrospective Meta-Analysis and Agricultural Modeling Study

CCPortal

DOI	10.1029/2023AV001052
	Balancing Non-CO2 GHG Emissions and Soil Carbon Change in US Rice Paddies: A Retrospective Meta-Analysis and Agricultural Modeling Study
	Zhang, Jingting; Tian, Hanqin; You, Yongfa; Liang, Xin-Zhong; Ouyang, Zutao; Pan, Naiqing; Pan, Shufen
发表日期	2024
EISSN	2576-604X
起始页码	5
结束页码	1
卷号	5 期号:1
英文摘要	U.S. rice paddies, critical for food security, are increasingly contributing to non-CO(2 )greenhouse gas (GHG) emissions like methane (CH4) and nitrous oxide (N2O). Yet, the full assessment of GHG balance, considering trade-offs between soil organic carbon (SOC) change and non-CO(2 )GHG emissions, is lacking. Integrating an improved agroecosystem model with a meta-analysis of multiple field studies, we found that U.S. rice paddies were the rapidly growing net GHG emission sources, increased 138% from 3.7 +/- 1.2 Tg CO(2 )eq yr(-1) in the 1960s to 8.9 +/- 2.7 Tg CO(2)eq yr(-1) in the 2010s. CH4, as the primary contributor, accounted for 10.1 +/- 2.3 Tg CO(2 )eq yr(-1) in the 2010s, alongside a notable rise in N2O emissions by 0.21 +/- 0.03 Tg CO(2 )eq yr(-1). SOC change could offset 14.0% (1.45 +/- 0.46 Tg CO(2 )yr(-1)) of the climate-warming effects of soil non-CO(2 )GHG emissions in the 2010s. This escalation in net GHG emissions is linked to intensified land use, increased atmospheric CO2 , higher synthetic nitrogen fertilizer and manure application, and climate change. However, no/reduced tillage and non-continuous irrigation could reduce net soil GHG emissions by approximately 10% and non-CO(2 )GHG emissions by about 39%, respectively. Despite the rise in net GHG emissions, the cost of achieving higher rice yields has decreased over time, with an average of 0.84 +/- 0.18 kg CO(2 )eq ha(-1) emitted per kilogram of rice produced in the 2010s. The study suggests the potential for significant GHG emission reductions to achieve climate-friendly rice production in the U.S. through optimizing the ratio of synthetic N to manure fertilizer, reducing tillage, and implementing intermittent irrigation.
英文关键词	rice paddies; methane; nitrous oxide; soil organic carbon (SOC); nature climate solution; DLEM
语种	英语
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:001155671000001
来源期刊	AGU ADVANCES
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/304158
作者单位	University System of Maryland; University of Maryland College Park; Boston College; Boston College; University System of Maryland; University of Maryland College Park; Auburn University System; Auburn University; Boston College
推荐引用方式 GB/T 7714	Zhang, Jingting,Tian, Hanqin,You, Yongfa,et al. Balancing Non-CO2 GHG Emissions and Soil Carbon Change in US Rice Paddies: A Retrospective Meta-Analysis and Agricultural Modeling Study[J],2024,5(1).
APA	Zhang, Jingting.,Tian, Hanqin.,You, Yongfa.,Liang, Xin-Zhong.,Ouyang, Zutao.,...&Pan, Shufen.(2024).Balancing Non-CO2 GHG Emissions and Soil Carbon Change in US Rice Paddies: A Retrospective Meta-Analysis and Agricultural Modeling Study.AGU ADVANCES,5(1).
MLA	Zhang, Jingting,et al."Balancing Non-CO2 GHG Emissions and Soil Carbon Change in US Rice Paddies: A Retrospective Meta-Analysis and Agricultural Modeling Study".AGU ADVANCES 5.1(2024).