Regenerative fertilization strategies for climate-smart agriculture: Consequences for greenhouse gas emissions from global drylands

doi:10.1016/j.jclepro.2023.136650

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	Regenerative fertilization strategies for climate-smart agriculture: Consequences for greenhouse gas emissions from global drylands
	Iqbal,Shahid; Xu,Jianchu; Khan,Sehroon; Worthy,Fiona Ruth; Khan,Haroon Zaman; Nadir,Sadia; Ranjitkar,Sailesh
	2023
发表期刊	JOURNAL OF CLEANER PRODUCTION
ISSN	1879-1786
卷号	398 页码:136650
摘要	Cultivated drylands are significant sources of greenhouse gases (GHGs), with declining yields. Regenerative practices are vital to achieve joint goals of boosting yields and mitigating GHGs emissions. Nevertheless, studies usually consider crop yields and soil properties, often lacking quantitative analysis of GHGs. This meta-analysis used log response ratio (lnRR) to perform effect size statistics; assessing impacts of major regenerative (manure, biochar, and two integrated applications) and inorganic fertilizers on GHGs emissions. The results reveal that GHGs emissions were increased by fertilizer or manure addition, but biochar decreased GHGs emissions, with greatest benefit at 50 t ha-1. Combining biochar or manure application with fertilizer emitted CO2 and/or N2O. Applying biochar alone led to 144% reduction in global warming potential (GWP). Paddy-rice with fertilizer emitted N2O and CH4, whereas these were mitigated by wheat with biochar. Fine-textured soils with manure emitted all three GHGs, whereas biochar with coarse-textured soils reduced emissions. Medium-textured soils had reduced N2O (18%) and CH4 (25%) emissions with integrated biochar and fertilizer. CO2 and N2O emissions were highest for neutral and acidic soils with fertilizer but lowest for alkaline soils after biochar application. Soil C:N ratios affected the best strategy to minimize GHGs: for high C:N ratio, fertilizer or manure should be avoided, in favour of biochar. Yet integrated biochar and fertilizer should be avoided for soils with low C:N ratio. We conclude that regenerative strategies using manure risk converting global drylands into major GHGs emitters. However, strategies incorporating biochar could mitigate dryland GHGs emissions and minimize GWP.
关键词	Arable land management Climate protection Gasses Global warming Meta-analysis NITROUS-OXIDE EMISSIONS METHANE OXIDATION ORGANIC-MATTER CARBON-DIOXIDE N2O EMISSIONS MAIZE PRODUCTIVITY MANURE APPLICATION SOIL TEXTURE RICE FIELD BIOCHAR
学科领域	Science & Technology - Other Topics ; Engineering ; Environmental Sciences & Ecology
DOI	10.1016/j.jclepro.2023.136650
收录类别	SCI
WOS记录号	WOS:000965888100001
引用统计
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/75566
专题	中国科学院昆明植物研究所
推荐引用方式 GB/T 7714	Iqbal,Shahid,Xu,Jianchu,Khan,Sehroon,et al. Regenerative fertilization strategies for climate-smart agriculture: Consequences for greenhouse gas emissions from global drylands[J]. JOURNAL OF CLEANER PRODUCTION,2023,398:136650.
APA	Iqbal,Shahid.,Xu,Jianchu.,Khan,Sehroon.,Worthy,Fiona Ruth.,Khan,Haroon Zaman.,...&Ranjitkar,Sailesh.(2023).Regenerative fertilization strategies for climate-smart agriculture: Consequences for greenhouse gas emissions from global drylands.JOURNAL OF CLEANER PRODUCTION,398,136650.
MLA	Iqbal,Shahid,et al."Regenerative fertilization strategies for climate-smart agriculture: Consequences for greenhouse gas emissions from global drylands".JOURNAL OF CLEANER PRODUCTION 398(2023):136650.

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