干旱区生态环境知识资源中心(Arid): Change and spatial variability of soil organic matter humification after long-term tillage and olive mill wastewater application in arid regions

Arid

DOI	10.1071/SR19113
	Change and spatial variability of soil organic matter humification after long-term tillage and olive mill wastewater application in arid regions
	Ben Mbarek, Hadda 1; Gargouri, Kamel 2; Mbadra, Chaker 1; Chaker, Rayda 2; Souidi, Yousra 1; Abbas, Ouissam 3; Baeten, Vincent 3; Rigane, Hafedh 1
通讯作者	Gargouri, Kamel
来源期刊	SOIL RESEARCH
ISSN	1838-675X
EISSN	1838-6768
出版年	2020
卷号	58 期号:4 页码:388-399
英文摘要	The changes of soil organic matter (SOM) humification induced by long-term combination of tillage and olive mill wastewater (OMW) application compared to natural and cultivated soil have been little investigated. This study aimed to compare effects of no cultivation with natural vegetation soil (NC), tillage (CT1) for 80 years and combination of tillage with OMW application (CT2) for 20 years on SOM humification degree. Fluorescence spectroscopy and UV-visible ratios (E4/E6 and C-HA/C-FA) were used to study soil humic acids (HAs). The SOM and humification distribution was determined for the whole field area using the Inverse Distance Weighting method. Results showed that SOM content, fluorescence emission area and E4/E6 and C-HA/C-FA ratios were higher in NC. Tillage reduced SOM amount, molecular size, aromatic condensation and humification degree as shown by the strong correlation between fluorescence area and C-HA/C-FA ratio in CT1 conversely to E4/E6. Contradictory results between fluorescence emission area and E4/E6 ratio found in NC and CT1 indicated that E4/E6 ratio was not a reliable indicator of SOM humification degree. The SOM amount, C-HA/C-FA ratio and emission fluorescence area increased conversely to E4/E6 ratio in CT2. This revealed a greatly humified organic matter and aromatic structure condensation with tillage and OMW application. Spatial distribution showed a progressive increase of SOM and C-HA/C-FA from north-west to south-east linked to the positive relationship between C-HA/C-FA ratio and SOM amount independent of soil management practices. Soil amended with OMW provided a favourable environment for the development of HAs which improved soil quality. The UV-visible ratio C-HA/C-FA with fluorescence emission area can be used as parameters to investigate SOM humification degree.
英文关键词	aromatic structure fluorescence spectroscopy humic acids organic wastes UV-visible spectroscopy SOM
类型	Article
语种	英语
国家	Tunisia ; Belgium
收录类别	SCI-E
WOS记录号	WOS:000536689000008
WOS关键词	HUMIC SUBSTANCES ; BRAZILIAN OXISOL ; NO-TILLAGE ; ACIDS ; QUALITY ; SYSTEMS ; CARBON ; FRACTIONS ; EVOLUTION ; IMPACTS
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/2XILL650/318483
作者单位	1.Univ Sfax, Sfax Fac Sci, Earth Sci Dept, POB 1087, Sfax 3000, Tunisia; 2.Univ Sfax, Olive Inst, POB 1087, Sfax 3000, Tunisia; 3.Walloon Agr Res Ctr CRA W, Food & Feed Qual Unit, Henseval Bldg,24 Chaussee Namur, B-5030 Gembloux, Belgium
推荐引用方式 GB/T 7714	Ben Mbarek, Hadda,Gargouri, Kamel,Mbadra, Chaker,et al. Change and spatial variability of soil organic matter humification after long-term tillage and olive mill wastewater application in arid regions[J],2020,58(4):388-399.
APA	Ben Mbarek, Hadda.,Gargouri, Kamel.,Mbadra, Chaker.,Chaker, Rayda.,Souidi, Yousra.,...&Rigane, Hafedh.(2020).Change and spatial variability of soil organic matter humification after long-term tillage and olive mill wastewater application in arid regions.SOIL RESEARCH,58(4),388-399.
MLA	Ben Mbarek, Hadda,et al."Change and spatial variability of soil organic matter humification after long-term tillage and olive mill wastewater application in arid regions".SOIL RESEARCH 58.4(2020):388-399.