干旱区生态环境知识资源中心(Arid): Soil Organic Matter Composition in Coastal and Continental Date Palm Systems: Insights from Tunisian Oases

Arid

DOI	10.1016/S1002-0160(19)60814-3
	Soil Organic Matter Composition in Coastal and Continental Date Palm Systems: Insights from Tunisian Oases
	Mlih, Rawan K.1,2; Gocke, Martina, I 1; Bol, Roland 2; Berns, Anne E.2; Fuhrmann, Irabella 1; Brahim, Nadhem 3
通讯作者	Gocke, Martina, I
来源期刊	PEDOSPHERE
ISSN	1002-0160
EISSN	2210-5107
出版年	2019
卷号	29 期号:4 页码:444-456
英文摘要	In Tunisia, the coastal Chenini oasis is characterized by a lush vegetation cover, whereas more inland continental oases (e.g., the Guettaya oasis) have a very scarce vegetation cover. For sustaining date palm production in these areas, organic fertilizers are applied, either spread on the soil surface (in Chenini) or buried under a sand layer (in Guettaya). We examined at a molecular level how these management techniques affect soil organic matter composition in oasis systems. A dominance of fresh plant input for Guettaya was indicated by solid-state C-13 nuclear magnetic resonance spectroscopy signals, which was most pronounced in the uppermost soil close to palms. Evidence for more degraded organic matter was found in deeper soil near the palms, as well as in the soil distant from the palms. Amino sugar contents were low in the uppermost Guettaya soil near the palms. The overall microbial amino sugar residue contents were similar in range as those found in other dryland environments. With increasing distance from trees, the amino sugar contents declined in Guettaya, where the palms grow on bare soil, but this was not the case for Chenini, which has multi-layer vegetation cover under palms. In agreement with the results from previous dryland studies, the soil microbial community in both oasis systems was dominated by fungi in topsoil, and a shift toward bacteria-derived residues in subsurface soil. This might be due to higher variability of temperature and moisture in topsoil and/or lower degradability of fungal remains; however, further research is required to confirm this hypothesis.
英文关键词	amino sugar dryland microbial community soil organic carbon solid-state NMR subsoil amelioration total nitrogen
类型	Article
语种	英语
国家	Germany ; Tunisia
收录类别	SCI-E
WOS记录号	WOS:000476474500004
WOS关键词	PARTICLE-SIZE FRACTIONS ; MICROBIAL BIOMASS ; AMINO-SUGARS ; WATER-CONTENT ; MURAMIC ACID ; CARBON ; SALINITY ; DYNAMICS ; NITROGEN ; OASIS
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/2XILL650/217887
作者单位	1.Univ Bonn, Inst Crop Sci & Resource Conservat, D-53115 Bonn, Germany; 2.Forschungszentrum Julich, Agrosphere Inst IBG 3, D-52428 Julich, Germany; 3.Univ Tunis El Manar, Dept Geol, Tunis 2092, Tunisia
推荐引用方式 GB/T 7714	Mlih, Rawan K.,Gocke, Martina, I,Bol, Roland,et al. Soil Organic Matter Composition in Coastal and Continental Date Palm Systems: Insights from Tunisian Oases[J],2019,29(4):444-456.
APA	Mlih, Rawan K.,Gocke, Martina, I,Bol, Roland,Berns, Anne E.,Fuhrmann, Irabella,&Brahim, Nadhem.(2019).Soil Organic Matter Composition in Coastal and Continental Date Palm Systems: Insights from Tunisian Oases.PEDOSPHERE,29(4),444-456.
MLA	Mlih, Rawan K.,et al."Soil Organic Matter Composition in Coastal and Continental Date Palm Systems: Insights from Tunisian Oases".PEDOSPHERE 29.4(2019):444-456.