气候变化领域集成服务门户(CCPortal): Does no-till crop management mitigate gaseous emissions and reduce yield disparities: An empirical US-China evaluation

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DOI	10.1016/j.scitotenv.2024.170310
	Does no-till crop management mitigate gaseous emissions and reduce yield disparities: An empirical US-China evaluation
	Shakoor, Awais; Pendall, Elise; Arif, Muhammad Saleem; Farooq, Taimoor Hassan; Iqbal, Shahid; Shahzad, Sher Muhammad
发表日期	2024
ISSN	0048-9697
EISSN	1879-1026
起始页码	917
卷号	917
英文摘要	Global agricultural systems face one of the greatest sustainability challenges: meeting the growing demand for food without leaving a negative environmental footprint. United States (US) and China are the two largest economies and account for 39 % of total global greenhouse gases (GHG) emissions into the atmosphere. No-till is a promising land management option that allows agriculture to better adapt and mitigate climate change effects compared to traditional tillage. However, the efficacy of no-till for mitigating GHG is still debatable. In this metaanalysis, we comprehensively assess the impact of no-till (relative to traditional tillage) on GHG mitigation potential and crop productivity in different agroecological systems and management regimes in the US and China. Overall, no-till in China did not change crop yields, although soil CO2 (8 %) and N2O (12 %) emissions decreased significantly, while soil CH4 emissions increased by 12 %. In contrast to Chinese no-till, a significant improvement in crop yields (up to 12 %) was recorded on US cropland under no -till. Moreover, significant decreases in soil N2O (21 %) and CH4 (12 %) emissions were observed. Of the three cropping systems, only wheat showed significant reduction in CO2, N2O and CH4 emissions in the Chinese no -till system. In the case of US, notill soybean -rice and maize cropping systems demonstrated significant emission reductions for N2O and CO2, respectively. Interestingly, yields of no -till maize in China and rice in US exceeded those of other no -till cereals. In China, no -till on medium -texture soils resulted in significant reductions in GHG emissions and higher crop yields compared to other soil types. In both countries, the relatively higher crop yields under irrigated versus non -irrigated no -till and the significant yield differences on fine textured soils under US no -till are likely due to the substantial N2O reductions. In summary, crop yield disparities from no -till between China and the US were related to the insignificant effects on controlling CH4 emissions and successfully mitigating N2O, respectively. This study comprehensively demonstrates how cropping system and pedoclimatic conditions influence the relative effectiveness of no -till in both countries.
英文关键词	Conservation farming; Food security; Sustainable development; Climate change; US
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
WOS记录号	WOS:001178056900001
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/291528
作者单位	Western Sydney University; Government College University Faisalabad; Chinese Academy of Sciences; Kunming Institute of Botany, CAS; University of Sargodha
推荐引用方式 GB/T 7714	Shakoor, Awais,Pendall, Elise,Arif, Muhammad Saleem,et al. Does no-till crop management mitigate gaseous emissions and reduce yield disparities: An empirical US-China evaluation[J],2024,917.
APA	Shakoor, Awais,Pendall, Elise,Arif, Muhammad Saleem,Farooq, Taimoor Hassan,Iqbal, Shahid,&Shahzad, Sher Muhammad.(2024).Does no-till crop management mitigate gaseous emissions and reduce yield disparities: An empirical US-China evaluation.SCIENCE OF THE TOTAL ENVIRONMENT,917.
MLA	Shakoor, Awais,et al."Does no-till crop management mitigate gaseous emissions and reduce yield disparities: An empirical US-China evaluation".SCIENCE OF THE TOTAL ENVIRONMENT 917(2024).