干旱区生态环境知识资源中心(Arid): Increasing net ecosystem carbon budget and mitigating global warming potential with improved irrigation and nitrogen fertilization management of a spring wheat farmland system in arid Northwest China

Arid

DOI	10.1007/s11104-023-06006-6
	Increasing net ecosystem carbon budget and mitigating global warming potential with improved irrigation and nitrogen fertilization management of a spring wheat farmland system in arid Northwest China
	Li, Yue; Wang, Rong; Chen, Zhijun; Xiong, Yunwu; Huang, Quanzhong; Huang, Guanhua
通讯作者	Huang, GH
来源期刊	PLANT AND SOIL
ISSN	0032-079X
EISSN	1573-5036
出版年	2023
卷号	489 期号:1-2 页码:193-209
英文摘要	Background and aimsInappropriate irrigation and nitrogen fertilization caused high global warming potential (GWP) while reduced carbon sequestration of farmland systems in arid regions. Understanding the effects of irrigation and nitrogen fertilization on net ecosystem carbon budget (NECB) and its components are crucial to mitigate GWP and increase carbon sequestration.MethodsA field experiment was carried out to investigate the impact of irrigation and nitrogen fertilization on soil greenhouse gas (GHG) emissions, crop net primary productivity (NPP), NECB and net GWP from spring wheat farmland in arid Northwest China. Three irrigation depth levels, 180, 315, and 450 mm and three nitrogen fertilization levels, 170, 250, and 340 kg ha(-1) were designed.ResultsIrrigation and fertilization significantly affected GHG emissions and carbon sequestration of farmland system. Reducing irrigation depth from 450 to 315 mm reduced soil CO2 and N2O emissions but did not significantly reduce NPP. Increasing nitrogen fertilization from 170 kg ha(-1) to 250 kg ha(-1) improved NPP, but continuously increasing nitrogen input decreased NPP while increasing soil CO2 and N2O emissions. Therefore, the NECB first increased and then decreased, while the net GWP first decreased and then increased as the irrigation depth and nitrogen fertilization decreased. Overall, the moderate irrigation and fertilization treatment (i.e., 315 mm irrigation and 250 kg ha(-1) nitrogen fertilization) obtained the highest NECB and the lowest net GWP.ConclusionImproving irrigation and fertilization management can increase carbon sequestration and mitigate the net GWP of farmland systems by increasing crop NPP and reducing soil GHG emissions.
英文关键词	Carbon sequestration Greenhouse gas emission Water-saving irrigation Fertilization management Net primary productivity
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000963628100001
WOS关键词	GREENHOUSE-GAS EMISSIONS ; OXIDE EMISSIONS ; N2O EMISSIONS ; MAIZE ; DIOXIDE ; TILLAGE ; AMMONIA ; SOILS ; CROP ; CO2
WOS类目	Agronomy ; Plant Sciences ; Soil Science
WOS研究方向	Agriculture ; Plant Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/398017
推荐引用方式 GB/T 7714	Li, Yue,Wang, Rong,Chen, Zhijun,et al. Increasing net ecosystem carbon budget and mitigating global warming potential with improved irrigation and nitrogen fertilization management of a spring wheat farmland system in arid Northwest China[J],2023,489(1-2):193-209.
APA	Li, Yue,Wang, Rong,Chen, Zhijun,Xiong, Yunwu,Huang, Quanzhong,&Huang, Guanhua.(2023).Increasing net ecosystem carbon budget and mitigating global warming potential with improved irrigation and nitrogen fertilization management of a spring wheat farmland system in arid Northwest China.PLANT AND SOIL,489(1-2),193-209.
MLA	Li, Yue,et al."Increasing net ecosystem carbon budget and mitigating global warming potential with improved irrigation and nitrogen fertilization management of a spring wheat farmland system in arid Northwest China".PLANT AND SOIL 489.1-2(2023):193-209.