干旱区生态环境知识资源中心(Arid): Repetitive land application of urban sewage sludge: Effect of amendment rates and soil texture on fertility and degradation parameters

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DOI	10.1016/j.catena.2018.08.015
	Repetitive land application of urban sewage sludge: Effect of amendment rates and soil texture on fertility and degradation parameters
	Hamdi, Helmi 1; Hechmi, Sarra 1; Khelil, Mohamed Naceur 2; Zoghlami, Ines Rahma 1; Benzarti, Saoussen 3; Mokni-Tlili, Sonia 1; Hassen, Abdennaceur 1; Jedidi, Naceur 1
通讯作者	Hamdi, Helmi
来源期刊	CATENA
ISSN	0341-8162
EISSN	1872-6887
出版年	2019
卷号	172 页码:11-20
英文摘要	The agricultural reuse of urban sewage sludge in degraded croplands has seen a wide acceptance for biowaste recycling and for the improvement of soil fertility. However, soil degradation and health issues may arise from the fact that sludge addition causes chemical and biological contamination if mismanaged. To closely monitor the long term soil-sludge interactions, a field study was conducted over a three-year period under a semi-arid climate. More precisely, changes in topsoil properties were assessed in 4-m(2) uncropped plots amended with sludge rates equivalent to 0, 40, 80 and 120 t ha(-1) year(-1) for two soil textures: soil A (sandy loam) and soil S (sandy). Results showed that all studied parameters changed significantly in a dose-dependent manner for both soils as compared to untreated controls. As such, sludge addition improved consistently TOC, N, P and K content up to soils treated with 120 t ha(-1) year(-1). The enhancement of soil nutrient status impacted positively on biological properties, including microbial biomass and soil enzyme activities (dehydrogenase, protease and phosphatase). However, the variation of soil properties was more important in soil A characterized by a higher fine fraction thus stronger retention capacity. Accordingly, XRD analysis of soil A revealed several identifiable peaks representing kaolinite and illite clays in contrast to soil S. Unexpectedly, high to excessive sludge doses of 80 and 120 t ha(-1) year(-1) did not provoke soil degradation after three repeated annual amendments. In fact, pH values in both soils remained within neutral to alkaline range (7.76-8.63); total heavy metals (Cu, Zn, Ni and Pb), soil salinity and fecal coliforms were all below threshold values for contaminated soils.
英文关键词	Sewage sludge Soil texture XRD analysis Fertility Biological properties Degradation
类型	Article
语种	英语
国家	Tunisia
收录类别	SCI-E
WOS记录号	WOS:000449136800002
WOS关键词	MICROBIAL BIOMASS CARBON ; HEAVY-METALS ; ORGANIC AMENDMENTS ; COMPOST ; ECOTOXICITY ; BIOASSAYS ; DISPOSAL ; NITROGEN ; FOREST ; MANURE
WOS类目	Geosciences, Multidisciplinary ; Soil Science ; Water Resources
WOS研究方向	Geology ; Agriculture ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/214804
作者单位	1.Univ Carthage, Water Res & Technol Ctr, POB 273, Soliman 8020, Tunisia; 2.Natl Inst Res Rural Engn Water & Forestry, POB 10, Ariana 2080, Tunisia; 3.Higher Sch Agr Mograne, Mograne 1121, Tunisia
推荐引用方式 GB/T 7714	Hamdi, Helmi,Hechmi, Sarra,Khelil, Mohamed Naceur,et al. Repetitive land application of urban sewage sludge: Effect of amendment rates and soil texture on fertility and degradation parameters[J],2019,172:11-20.
APA	Hamdi, Helmi.,Hechmi, Sarra.,Khelil, Mohamed Naceur.,Zoghlami, Ines Rahma.,Benzarti, Saoussen.,...&Jedidi, Naceur.(2019).Repetitive land application of urban sewage sludge: Effect of amendment rates and soil texture on fertility and degradation parameters.CATENA,172,11-20.
MLA	Hamdi, Helmi,et al."Repetitive land application of urban sewage sludge: Effect of amendment rates and soil texture on fertility and degradation parameters".CATENA 172(2019):11-20.