干旱区生态环境知识资源中心(Arid): Predictive mapping of soil electrical conductivity as a Proxy of soil salinity in south-east of Algeria

Arid

DOI	10.1016/j.indic.2020.100087
	Predictive mapping of soil electrical conductivity as a Proxy of soil salinity in south-east of Algeria
	Abdennour, Mohamed Amine; Douaoui, Abdelkader; Piccini, Chiara; Pulido, Manuel; Bennacer, Amel; Bradai, Abdelhamid; Barrena, Jesus; Yahiaoui, Ibrahim
通讯作者	Abdennour, MA (corresponding author), Mohamed Khider Univ, Lab Ecosyst Divers & Agr Prod Syst Dynam Arid Zon, Biskra 07000, Algeria.
来源期刊	ENVIRONMENTAL AND SUSTAINABILITY INDICATORS
ISSN	2665-9727
出版年	2020
卷号	8
英文摘要	In semi-arid and arid areas soil salinity has adverse effects both on the environment and agricultural production. The region of Biskra (South-East of Algeria) underwent a strong agricultural transformation from traditional oasis agriculture to an almost exclusive production of dates involving market gardening throughout the year. The main goal was to predict the spatial variation of EC using geostatistics and a Geographic Information System (GIS), comparing also the performance of two classical geostatistical interpolators - Ordinary Kriging (OK), using only point data, and Cokriging (CK), introducing also auxiliary variables to improve prediction accuracy (SI gypsum and SO42-, obtained from the analysis of the chemical and geochemical processes of soil salinization). For this study, a total of 42 soil samples were randomly collected from topsoil (0-15 cm) in the irrigated perimeter of El Ghrous, a representative rural community located in the west of Biskra. Aiming to better understand the processes that most influence the evolution of soil salinity in this area, some chemical parameters were determined, among which the electrical conductivity (EC). Moreover, some terrain parameters were derived from a digital elevation model as auxiliary information, and Normalized Difference Vegetation Index (NDVI) was calculated from satellite imagery. The prediction efficiency of the methods was evaluated by calculating the mean error (ME) and the root mean square error (RMSE). The resulting maps showed that soils in the study area are affected by salinization. Cross-validation results showed a better performance in estimating EC of CK, after the introduction of the covariates, than OK, with an RMSE value of 0.92 vs. 1.53. This suggests a greater efficiency of CK in EC prediction in this area, confirming that the introduction of some auxiliary data correlated to the target variable significantly improves the interpolation. A third kriging technique, Indicator Kriging (IK) was applied to generate a map of the probability of exceeding a given threshold.
英文关键词	Ordinary kriging Cokriging Indicator kriging Spatial variability Saturation index Biskra
类型	Article
语种	英语
开放获取类型	DOAJ Gold
收录类别	ESCI
WOS记录号	WOS:000646888000036
WOS关键词	GEOSTATISTICAL METHODS ; SPATIAL-DISTRIBUTION ; ORGANIC-MATTER ; VARIABILITY ; INDICATOR ; QUALITY ; PLAIN ; REGION ; RISK ; PROBABILITY
WOS类目	Environmental Sciences ; Environmental Studies
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/352570
作者单位	[Abdennour, Mohamed Amine] Mohamed Khider Univ, Lab Ecosyst Divers & Agr Prod Syst Dynam Arid Zon, Biskra 07000, Algeria; [Douaoui, Abdelkader; Yahiaoui, Ibrahim] Djilali Bounaama Univ, Lab Crop Prod & Sustainable Valorizat Nat Resourc, Khemis Miliana 44225, Algeria; [Piccini, Chiara] Council Agr Res & Econ, Res Ctr Agr & Environm, Via Navicella 2-4, I-00184 Rome, Italy; [Pulido, Manuel; Barrena, Jesus] Univ Extremadura, GeoEnvironm Res Grp, Caceres 10071, Spain; [Bennacer, Amel] Mohamed Bougara Univ, Fac Sci, Lab Valorizat & Conservat Biol Resources, Boumerdes 35000, Algeria; [Bradai, Abdelhamid] Hassiba Ben Bouali Univ, Lab Water & Environm, Chlef 02180, Algeria
推荐引用方式 GB/T 7714	Abdennour, Mohamed Amine,Douaoui, Abdelkader,Piccini, Chiara,et al. Predictive mapping of soil electrical conductivity as a Proxy of soil salinity in south-east of Algeria[J],2020,8.
APA	Abdennour, Mohamed Amine.,Douaoui, Abdelkader.,Piccini, Chiara.,Pulido, Manuel.,Bennacer, Amel.,...&Yahiaoui, Ibrahim.(2020).Predictive mapping of soil electrical conductivity as a Proxy of soil salinity in south-east of Algeria.ENVIRONMENTAL AND SUSTAINABILITY INDICATORS,8.
MLA	Abdennour, Mohamed Amine,et al."Predictive mapping of soil electrical conductivity as a Proxy of soil salinity in south-east of Algeria".ENVIRONMENTAL AND SUSTAINABILITY INDICATORS 8(2020).