干旱区生态环境知识资源中心(Arid): Tillage Long-Term Effects on Soil Organic Matter Humification and Humic Acids Structural Changes in Regosol Profiles Typical of an Arid Region

Arid

DOI	10.1134/S1064229323602007
	Tillage Long-Term Effects on Soil Organic Matter Humification and Humic Acids Structural Changes in Regosol Profiles Typical of an Arid Region
	Ben Mahmoud, Imen; Ben Mbarek, Hadda; Sanchez-Bellon, Angel; Medhioub, Mounir; Moussa, Mohamed; Rigane, Hafedh; Gargouri, Kamel
通讯作者	Ben Mahmoud, I
来源期刊	EURASIAN SOIL SCIENCE
ISSN	1064-2293
EISSN	1556-195X
出版年	2024
卷号	57 期号:4 页码:577-588
英文摘要	This study aims to assess soil organic matter (SOM) humification and changes in molecular structures of humic acids (HAs) induced by long term management practices over soil profile under arid climate in south-eastern Tunisia. Two experimental fields were studied: the first was cultivated with olive tree and tilled for long term (CT) while the second was uncultivated without any management practices and with native vegetation (NC). Soil samples were collected at different depths from (CT) and (NC) profiles to determine chemical properties. Humic acids were isolated and studied by measuring UV-visible ratios (E-465/(665), E-280/(664) and E-472/(664)) and fluorescence spectroscopy analysis. Results showed that long-term tillage practices reduced the SOM amount, aromatic condensation, molecular size and humification degree in surface layer of CT confirmed by the decrease in the fluorescence emission areas and UV-visible ratios. Inversely, in deep layers, results showed a greatly humified organic matter and aromatic structures condensation in CT. Longterm tillage leads to a significant decrease in aromatic condensation and OM humification in surface layers. Unmanaged soils provided a favorable environment to maintain OM chemical structures and restore soil quality under long-term management practices.
英文关键词	Soil management arid regosol organic matter evolution humic substances UV-Visible fluorescence spectroscopy
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001154254900006
WOS关键词	LASER-INDUCED FLUORESCENCE ; CROPPING SYSTEMS ; NO-TILLAGE ; CARBON ; SUBSTANCES ; FRACTIONS ; SPECTROSCOPIES ; MANAGEMENT ; COMPOST ; QUALITY
WOS类目	Soil Science
WOS研究方向	Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/403682
推荐引用方式 GB/T 7714	Ben Mahmoud, Imen,Ben Mbarek, Hadda,Sanchez-Bellon, Angel,et al. Tillage Long-Term Effects on Soil Organic Matter Humification and Humic Acids Structural Changes in Regosol Profiles Typical of an Arid Region[J],2024,57(4):577-588.
APA	Ben Mahmoud, Imen.,Ben Mbarek, Hadda.,Sanchez-Bellon, Angel.,Medhioub, Mounir.,Moussa, Mohamed.,...&Gargouri, Kamel.(2024).Tillage Long-Term Effects on Soil Organic Matter Humification and Humic Acids Structural Changes in Regosol Profiles Typical of an Arid Region.EURASIAN SOIL SCIENCE,57(4),577-588.
MLA	Ben Mahmoud, Imen,et al."Tillage Long-Term Effects on Soil Organic Matter Humification and Humic Acids Structural Changes in Regosol Profiles Typical of an Arid Region".EURASIAN SOIL SCIENCE 57.4(2024):577-588.