干旱区生态环境知识资源中心(Arid): No till soil organic carbon sequestration could be overestimated when slope effect is not considered

Arid

DOI	10.1016/j.scitotenv.2020.143758
	No till soil organic carbon sequestration could be overestimated when slope effect is not considered
	Novara, Agata; Sarno, Mauro; Gristina, Luciano
通讯作者	Novara, A (corresponding author), Univ Palermo, Dept Agr Food & Forest Sci, Viale Sci, I-90128 Palermo, Italy.
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2021
卷号	757
英文摘要	No tillage (NT) soil management has been considered a strategy for the implementation of environmental sustainability and a possible tool of soil organic carbon (SOC) sequestration. Considering the wide range of data on SOC change after NT application in relation to conventional tillage (Cr) in different studies, further researches are needed over a diverse range of soil and climate before a proper estimation of the benefits can be provided by the NT. A data set composed of cereal cropping system studies, comparing the SOC content under CT and NT was compiled from the literature using the scientific repositories Scopus and Science direct. This aims to i) discriminate and quantify the variation of SOC in relation to morphology (Flat area (FA) and Slope Area (SA)) and climates (Aridity index (Ai)); ii) provide a reliable forecast of C sequestration by NT in a specific environment. The results from collected datasets showed that SOC ratio between NT and CT was higher in sloping than flat areas and was also in correlation with the Ai. The average annual increase of SOC in NT in comparison to Cr was 0.32 Mg ha(-1) y(-1) and 021 Mg ha(-1) y(-1) for SA and FA, respectively. The regression of the relative ratio (RPNT/CT) against Ai both for FA and SA showed a high statistical significance for FA. For SA the lack of significance is due to no response of the dependent variables to Ai changes and to the prevalent effect that NT has on the soil C erosion processes. These results highlighted that in SA. the SOC sequestration by NT is overestimated. These results provide concrete examples of the importance to discriminate soil morphology and climate when recommending NT soil management for soil C sequestration in order to individuate areas where NT can maximize its potentiality as a mitigation tool. (C) 2020 Published by Elsevier B.V.
英文关键词	Aridity index Carbon account Conservative agriculture Semi-arid environment Cereal cropping systems
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000604432900040
WOS关键词	CROPPING SYSTEMS ; MANAGEMENT ; EROSION ; WHEAT ; MITIGATION ; FERTILIZER ; DYNAMICS ; IMPACTS ; CLIMATE ; RUNOFF
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/2XILL650/348187
作者单位	[Novara, Agata; Sarno, Mauro; Gristina, Luciano] Univ Palermo, Dept Agr Food & Forest Sci, Viale Sci, I-90128 Palermo, Italy
推荐引用方式 GB/T 7714	Novara, Agata,Sarno, Mauro,Gristina, Luciano. No till soil organic carbon sequestration could be overestimated when slope effect is not considered[J],2021,757.
APA	Novara, Agata,Sarno, Mauro,&Gristina, Luciano.(2021).No till soil organic carbon sequestration could be overestimated when slope effect is not considered.SCIENCE OF THE TOTAL ENVIRONMENT,757.
MLA	Novara, Agata,et al."No till soil organic carbon sequestration could be overestimated when slope effect is not considered".SCIENCE OF THE TOTAL ENVIRONMENT 757(2021).