干旱区生态环境知识资源中心(Arid): Statistical relationship between land surface altitude and soil salinity in the enclosed desert depressions of arid regions

Arid

DOI	10.1007/s12517-019-4969-9
	Statistical relationship between land surface altitude and soil salinity in the enclosed desert depressions of arid regions
	Bakr, Noura; Ali, Rafat Ramadan
通讯作者	Ali, Rafat Ramadan
来源期刊	ARABIAN JOURNAL OF GEOSCIENCES
ISSN	1866-7511
EISSN	1866-7538
出版年	2019
卷号	12 期号:23
英文摘要	Soil salinity is one of the most limiting factors in land evaluation and management for agricultural use as it impacts directly on crop cultivation and production. The laboratory soil salinity analysis (electrical conductivity, EC) is an essential procedure to determine the suitability of soils for different uses. The main goal of this research is to quantify the statistical relationship between surface altitude (based on digital elevation model, DEM) and soil salinity (based on EC) in a desert depression in the arid region. A total of 40 surface soil samples collected from different altitudes in Wadi El Farigh depression, western desert, Egypt. The co-kriging geostatistical model was applied to interpolate the laboratory-measured EC values as the primary variable and the elevation as a covariate. Based on the altitude variations, the dataset classified into two groups; soil samples within the altitude of <= 20 m and > 20 m. Both linear and logistic (power) regression models were employed to predict the EC values based on the elevation of the study area using all dataset and the two classified groups. The results show a strong correlation between EC values and surface elevation. The linear regression models produced R(2)s of 0.67, 0.86, and 0.74 using all dataset, <= 20 and > 20 m, respectively. Stronger relationships with respective R(2)s of 0.94, 0.86, and 0.84 achieved when power model was applied. No significant differences observed between the models' results and validation datasets. Generally, the regression analysis shows a promising technique for predicting the soil salinity based on surface altitude in the enclosed depressions of the arid region.
英文关键词	Co-kriging DEM EC Egypt Regression analysis
类型	Article
语种	英语
国家	Egypt
收录类别	SCI-E
WOS记录号	WOS:000501806700004
WOS关键词	DIGITAL ELEVATION MODELS ; SALT-AFFECTED SOILS ; SPATIAL PREDICTION ; SHALLOW GROUNDWATER ; TRAFFIC DENSITY ; SONGNEN PLAIN ; CLASSIFICATION ; MANAGEMENT ; TERRAIN ; QUALITY
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
EI主题词	2019-12-01
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/311228
作者单位	Natl Res Ctr, Soils & Water Use Dept, Cairo, Egypt
推荐引用方式 GB/T 7714	Bakr, Noura,Ali, Rafat Ramadan. Statistical relationship between land surface altitude and soil salinity in the enclosed desert depressions of arid regions[J],2019,12(23).
APA	Bakr, Noura,&Ali, Rafat Ramadan.(2019).Statistical relationship between land surface altitude and soil salinity in the enclosed desert depressions of arid regions.ARABIAN JOURNAL OF GEOSCIENCES,12(23).
MLA	Bakr, Noura,et al."Statistical relationship between land surface altitude and soil salinity in the enclosed desert depressions of arid regions".ARABIAN JOURNAL OF GEOSCIENCES 12.23(2019).