干旱区生态环境知识资源中心(Arid): Simulation of the Effect of Climate Variability on Reclamation Success of Brine-Affected Soil in Semi-Arid Environments

Arid

DOI	10.3390/su12010371
	Simulation of the Effect of Climate Variability on Reclamation Success of Brine-Affected Soil in Semi-Arid Environments
	Shaygan, Mandana 1; Baumgartl, Thomas 2
通讯作者	Shaygan, Mandana
来源期刊	SUSTAINABILITY
EISSN	2071-1050
出版年	2020
卷号	12 期号:1
英文摘要	Soils in arid and semi-arid environments are threatened by salinization. A cost-effective and efficient way to reclaim saline land is through leaching. This will be most effective in situations where direct human impact is the cause for salinity, e.g., in environments affected by industrial use or land rehabilitation following mining. Irrigation, which is the most common means of achieving salt leaching, is not feasible for the reclamation of mine sites' salt-affected soils located in remote areas, and thus, land reclamation largely relies on natural climatic conditions. This study was conducted to assess the effect of different climatic conditions of semi-arid environments on spatio-temporal salt leaching from brine-affected soil, and investigate the efficacy of the reduction of soil bulk density as a reclamation technique for saline land experiencing water scarcity. Three regions (represented by the Australian cities of Roma, Mount Isa, and Quilpie) representing semi-arid environments of Australia were selected, and their climatic scenarios (23 years) were applied to a validated HYDRUS-1D model. A brine-affected soil typical to Queensland, Australia, was chosen for this study. The investigations established that a greater number of individual high rainfall events resulted in a greater reduction of salinity in Roma (96%) and Mount Isa (93.31%) compared with Quilpie (58.75%), in which the soil salinity approached a level (<2 dS m(-1)) that was suitable for sustaining plant growth. Soil salinity reduced to 8 dS m(-1) under the climatic conditions of the Quilpie region. This study also demonstrated that the success of salt leaching from a brine-affected soil is a consequence of a sensitive response to the depth of individual rainfall events rather than rainfall distribution and the total amount of rainfall, and is controlled by the physical properties of the soil. Where climatic conditions cannot solely assist with salt leaching, reclamation may be successful by reducing soil bulk density.
英文关键词	HYDRUS land rehabilitation saline soil salt leaching soil bulk density
类型	Article
语种	英语
国家	Australia
开放获取类型	gold
收录类别	SCI-E ; SSCI
WOS记录号	WOS:000521955600371
WOS关键词	SALINE-SODIC SOIL ; PHYSICAL AMENDMENTS ; SOLUBLE CATIONS ; WATER ; REDISTRIBUTION ; ESTABLISHMENT ; AMELIORATION ; CONDUCTIVITY ; SALINIZATION ; GERMINATION
WOS类目	Green & Sustainable Science & Technology ; Environmental Sciences ; Environmental Studies
WOS研究方向	Science & Technology - Other Topics ; Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/315609
作者单位	1.Univ Queensland, Ctr Water Minerals Ind, Brisbane, Qld 4072, Australia; 2.Federat Univ, Geotech & Hydrol Engn Res Grp, Churchill, Vic 3841, Australia
推荐引用方式 GB/T 7714	Shaygan, Mandana,Baumgartl, Thomas. Simulation of the Effect of Climate Variability on Reclamation Success of Brine-Affected Soil in Semi-Arid Environments[J],2020,12(1).
APA	Shaygan, Mandana,&Baumgartl, Thomas.(2020).Simulation of the Effect of Climate Variability on Reclamation Success of Brine-Affected Soil in Semi-Arid Environments.SUSTAINABILITY,12(1).
MLA	Shaygan, Mandana,et al."Simulation of the Effect of Climate Variability on Reclamation Success of Brine-Affected Soil in Semi-Arid Environments".SUSTAINABILITY 12.1(2020).