干旱区生态环境知识资源中心(Arid): Tillage effect on hydrophobicity and hydrological properties of oil-contaminated sediments in ahyper-arid region

Arid

DOI	10.1080/15324982.2019.1599468
	Tillage effect on hydrophobicity and hydrological properties of oil-contaminated sediments in ahyper-arid region
	Stavi, Ilan 1; Rosenzweig, Ravid 2
通讯作者	Stavi, Ilan
来源期刊	ARID LAND RESEARCH AND MANAGEMENT
ISSN	1532-4982
EISSN	1532-4990
出版年	2020
卷号	34 期号:1 页码:26-35
英文摘要	A crude oil spill in 2014 led to the contamination of an extensive area in the Evrona Nature Reserve at the hyper-arid Arava Valley of Israel. In 2015, as a part of the restoration efforts, the oil-polluted braided ephemeral stream channels underwent a single session of tillage, to a depth of 10 cm. The rationale of this treatment was to break the hard, impermeable crust of the residual oil, aiming to reduce soil hardness and water repellency, and to improve the hydrological properties of the soil. In 2017, a study was conducted to assess the effect of chiseling tillage on the soil's hydrophobicity, mechanical strength, and infiltration capacity. Water drop penetration time, critical surface tension, penetration resistance, and near-saturated hydraulic conductivity were measured on-site, at depths of 0, 5, and 10 cm in contaminated-tilled, contaminated-non-tilled, and clean plots. We found that at the ground surface, tillage had a slight and non-significantly positive effect on the nearly-saturated hydraulic conductivity and a negative effect on the penetration resistance, while no improvement was recorded for the other properties. Further, some of these properties were inferior in the contaminated-tilled sediments compared to those in the contaminated-non-tilled sediments, an effect that could be attributed to the: (1) tillage-induced inversion of the most polluted surface layer into the sub-soil, (2) absence of a clayey sublayer, and (3) limited oil degradation due to the extremely dry conditions. Therefore, the results indicate that tillage is not an effective practice for restoring oil-polluted soils and sediments in hyper-arid regions.
英文关键词	Ecological impact ecosystem functioning environmental pollution geo-ecosystem restoration surface hydrology
类型	Article
语种	英语
国家	Israel
收录类别	SCI-E
WOS记录号	WOS:000470473500001
WOS关键词	SOIL-WATER REPELLENCY ; RESPONSES
WOS类目	Environmental Sciences ; Soil Science
WOS研究方向	Environmental Sciences & Ecology ; Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/214402
作者单位	1.Dead Sea & Arava Sci Ctr, IL-88820 Yotvata, Israel; 2.Geol Survey Israel, Jerusalem, Israel
推荐引用方式 GB/T 7714	Stavi, Ilan,Rosenzweig, Ravid. Tillage effect on hydrophobicity and hydrological properties of oil-contaminated sediments in ahyper-arid region[J],2020,34(1):26-35.
APA	Stavi, Ilan,&Rosenzweig, Ravid.(2020).Tillage effect on hydrophobicity and hydrological properties of oil-contaminated sediments in ahyper-arid region.ARID LAND RESEARCH AND MANAGEMENT,34(1),26-35.
MLA	Stavi, Ilan,et al."Tillage effect on hydrophobicity and hydrological properties of oil-contaminated sediments in ahyper-arid region".ARID LAND RESEARCH AND MANAGEMENT 34.1(2020):26-35.