干旱区生态环境知识资源中心(Arid): Monitoring the variation of soil quality with sewage sludge application rates in absence of rhizosphere effect

Arid

	Monitoring the variation of soil quality with sewage sludge application rates in absence of rhizosphere effect
	Zoghlami Rahma Ines; Hamdi Helmi; Mokni-Tlili Sonia; Hechmi Sarra; Khelil Mohamed Naceur; Aissa Nadhira Ben; Moussa Mohamed; Bousnina Habib; Benzarti Saoussen; Jedidi Naceur
来源期刊	国际水土保持研究
ISSN	2095-6339
出版年	2020
卷号	8 期号:3
英文摘要	Agricultural soils in semi-arid regions have frequently been degraded due to adverse climatic conditions, organic matter depletion, and poor farming practices.To enhance soil quality, this study examines the reuse of sewage sludge (SS)as an available source of organic matter in a typical Mediterranean sandyloam soil.Accordingly, we studied the cumulative effect of two annual applications of 40, 80 and 120 tons of sludge per ha on soil quality in absence of vegetation.The dose-dependent improvement of organic matter content was the most significant event that reflected sludge application rates, and consequently influenced other soil properties.Accordingly, soil structural stability increased by 13.3%, 28.8% and 59.4% for treatments SS-40, SS-80 and SS-120 respectively as compared to unamended control.Structural stability improvement was also confirmed by the dose-dependent variation of other edaphic factors including calcium content, the microbial quotient as well as Welt and C:N ratios.These parameters are involved in cementing soil aggregates by cation bridging, the formation of microbial mucilage, and clay-humic complexes.Soil magnetic susceptibility (SMS)was measured in situ as a possible rapid tool to evaluate soil condition.SMS showed significant correlation with sludge dose and stability amelioration testifying to the aggregation role that can play Al_2O_3 and particularly Fe_2O_3 minerals added by the hematite-rich sludge.Besides, analytical results and field observations revealed no trends of soil salinization or acidification by excessive sludge amounts.By avoiding the rhizosphere effect, outcomes could reflect the resilience and intrinsic capacity of the soil to cope with excessive sludge loads.
英文关键词	Sandy loam soil Urban sewage sludge Structural stability Soil degradation Aggregation Magnetic susceptibility
类型	Article
语种	英语
收录类别	CSCD
WOS类目	Science & Technology - Other Topics
CSCD记录号	CSCD:6843723
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/353594
推荐引用方式 GB/T 7714	Zoghlami Rahma Ines,Hamdi Helmi,Mokni-Tlili Sonia,et al. Monitoring the variation of soil quality with sewage sludge application rates in absence of rhizosphere effect[J],2020,8(3).
APA	Zoghlami Rahma Ines.,Hamdi Helmi.,Mokni-Tlili Sonia.,Hechmi Sarra.,Khelil Mohamed Naceur.,...&Jedidi Naceur.(2020).Monitoring the variation of soil quality with sewage sludge application rates in absence of rhizosphere effect.国际水土保持研究,8(3).
MLA	Zoghlami Rahma Ines,et al."Monitoring the variation of soil quality with sewage sludge application rates in absence of rhizosphere effect".国际水土保持研究 8.3(2020).