干旱区生态环境知识资源中心(Arid): A global meta-analysis of crop yield and agricultural greenhouse gas emissions under nitrogen fertilizer application

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DOI	10.1016/j.scitotenv.2022.154982
	A global meta-analysis of crop yield and agricultural greenhouse gas emissions under nitrogen fertilizer application
	Guo, Chan; Liu, Xufei; He, Xuefei
通讯作者	Guo, C
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2022
卷号	831
英文摘要	Nitrogen fertilization (NF) is one of the common practices to increase crop production worldwide over the past several decades. Nevertheless, unreasonable NF results in massive greenhouse gas (GHG) emissions, leading to climate change and global warming. Many studies have already reported the impact of NF on crop yield, global warming potential (GWP) and greenhouse gas intensity (GHGI), but the studies were limited to only some parameters. In this study, a total of 174 studies from 16 countries were collected and then a regression analysis was conducted to obtain the appropriate N fertilization rates that enhance crop yield while reducing GWP and GHGI. After that, a meta-analysis was performed to evaluate the effects of NF on crop yield, GHGI, GWP and GHG emissions and identify NF management strategies that benefit crop yield and maintain GWP. The results showed that the suitable N fertilization rate was 180,150,130 and 200 kg ha(-1) for wheat, maize, rice and vegetables or industrial crops, respectively. Overall, NF resulted in positive effect size in crop yield (0.56) and negative effect size in GHGI (-0.14) compared to NNF. GWP showed positive effect size (0.37) due to an increase in N2O emissions (0.91) relative to NNF, which is higher than the increase of CH4 emissions (0.01) and CO2 emissions (0.22). It was recommended that split and banded application of urea or urea plus manure is employed for cereals (especially wheat) in the arid and semi-arid regions with medium-textured and neutral or alkaline soil.
英文关键词	Nitrogen fertilization Greenhouse gas emissions Global warming potential Greenhouse gas intensity Crop yield
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000793520000003
WOS关键词	OXIDE EMISSIONS ; WINTER-WHEAT ; NO-TILLAGE ; NONLINEAR RESPONSE ; METHANE EMISSIONS ; N2O EMISSIONS ; GRAIN-YIELD ; SOIL CARBON ; RICE ; FLUXES
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/394370
推荐引用方式 GB/T 7714	Guo, Chan,Liu, Xufei,He, Xuefei. A global meta-analysis of crop yield and agricultural greenhouse gas emissions under nitrogen fertilizer application[J],2022,831.
APA	Guo, Chan,Liu, Xufei,&He, Xuefei.(2022).A global meta-analysis of crop yield and agricultural greenhouse gas emissions under nitrogen fertilizer application.SCIENCE OF THE TOTAL ENVIRONMENT,831.
MLA	Guo, Chan,et al."A global meta-analysis of crop yield and agricultural greenhouse gas emissions under nitrogen fertilizer application".SCIENCE OF THE TOTAL ENVIRONMENT 831(2022).