干旱区生态环境知识资源中心(Arid): Can deep tillage enhance carbon sequestration in soils? A meta-analysis towards GHG mitigation and sustainable agricultural management

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DOI	10.1016/j.rser.2020.110293
	Can deep tillage enhance carbon sequestration in soils? A meta-analysis towards GHG mitigation and sustainable agricultural management
	Feng, Qi; An, Chunjiang; Chen, Zhi; Wang, Zheng
通讯作者	An, CJ
来源期刊	RENEWABLE & SUSTAINABLE ENERGY REVIEWS
ISSN	1364-0321
EISSN	1879-0690
出版年	2020
卷号	133
英文摘要	Sequestration of soil organic carbon (SOC) is regarded as a promising approach to offset global CO2 emissions. Deep tillage (DT) can alleviate high soil strength, influencing both the surface and subsoil carbon pools either directly or indirectly. However, field studies on the benefits of DT to SOC remain inconclusive, and comprehensive quantitative assessment has been lacking. This study used meta-analysis to assess the response of SOC storage to DT based on global data of 430 comparisons from 43 studies. In general, DT was found to significantly enhanced SOC by 7.79%. Specifically, subsoiling significantly increased SOC, augmenting it by 8.87%. Deep ploughing did not facilitate SOC sequestration to a significant extent for the whole soil profile, although it did significantly increase SOC in 20-50 cm layer. The individual response of SOC to DT was found to be highly site-specific. DT was found to bring greater benefits in soil under arid zones, which typically featured fine or medium textured soil, and relatively high background SOC (> 6 g kg(-1)) and BD content (> 1.3 g cm(-3)). Furthermore, agronomic practices played an essential role in constraining SOC responses to DT, where better SOC responses were observed under rotational cropping, DT/NT (no-tillage) rotational tillage, advisable DT depth difference, and moderate nitrogen application rate (200-300 kg ha(-1) y(-1)) with prolonged experiment duration. In this regard, it is important to include site-specific environmental and agronomic conditions when identifying appropriate DT practices for enhancing SOC sequestration. The investigation into SOC storage capacity and DT technologies can provide scientific policy guidance for long-term global carbon management.
英文关键词	Deep tillage Subsoiling Soil organic carbon Grain yield GHG mitigation Sustainable agricultural management
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000581605600059
WOS关键词	MICROBIAL COMMUNITY COMPOSITION ; ORGANIC-CARBON ; CROP YIELD ; NO-TILLAGE ; CONSERVATION TILLAGE ; LOESS PLATEAU ; WINTER-WHEAT ; NITROGEN-FERTILIZATION ; ENZYME-ACTIVITIES ; HUMIC SUBSTANCES
WOS类目	Green & Sustainable Science & Technology ; Energy & Fuels
WOS研究方向	Science & Technology - Other Topics ; Energy & Fuels
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/327064
作者单位	[Feng, Qi; An, Chunjiang; Chen, Zhi; Wang, Zheng] Concordia Univ, Dept Bldg Civil & Environm Engn, Montreal, PQ H3G 1M8, Canada
推荐引用方式 GB/T 7714	Feng, Qi,An, Chunjiang,Chen, Zhi,et al. Can deep tillage enhance carbon sequestration in soils? A meta-analysis towards GHG mitigation and sustainable agricultural management[J],2020,133.
APA	Feng, Qi,An, Chunjiang,Chen, Zhi,&Wang, Zheng.(2020).Can deep tillage enhance carbon sequestration in soils? A meta-analysis towards GHG mitigation and sustainable agricultural management.RENEWABLE & SUSTAINABLE ENERGY REVIEWS,133.
MLA	Feng, Qi,et al."Can deep tillage enhance carbon sequestration in soils? A meta-analysis towards GHG mitigation and sustainable agricultural management".RENEWABLE & SUSTAINABLE ENERGY REVIEWS 133(2020).