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DOI	10.1016/j.geoderma.2021.115400
	Assessment of desertification using modified MEDALUS model in the north Nile Delta, Egypt
	Abuzaid, Ahmed S.; Abdelatif, Abdelatif D.
通讯作者	Abuzaid, AS (corresponding author), Benha Univ, Fac Agr, Soils & Water Dept, Banha, Egypt.
来源期刊	GEODERMA
ISSN	0016-7061
EISSN	1872-6259
出版年	2022
卷号	405
英文摘要	Understanding spatial patterns of environmentally sensitive areas (ESAs) to desertification is essential for sustainable land use in the drylands. This work is a novel trial for integrating the erosion quality index (EQI) with a modified Mediterranean Desertification and Land Use (MEDALUS) method and factor analysis to define ESAs to desertification. The model was then applied within 8607.13 km(2) (860713 ha) in the north Nile Delta of Egypt as a case study. Climate data, satellite imageries, field observations, and samples collected from 105 soil profiles were analyzed to characterize five thematic quality indices of soil, climate, vegetation, management, and erosion. These indices were weighted based on the factor analysis (FA) and superimposed under the GIS environment in a single map using the weighted sum model. The proposed model showed that 72% of the total area was classified as critical-sensitive to desertification where 70% was classified as highly-critical, while 2% as moderately-critical. No significant difference (p < 0.001) was observed between the results of the proposed model and those calculated by the geometric mean algorithm (MEDALUS model) with R-2 and root mean square error of 0.88 and 0.11, respectively. The average linear sensitivity analysis showed that using weights derived from the FA could assimilate the results of the proposed model closer to reality rather than equal weights used in the MEDALUS model. The developed model would improve the insight into desertification processes in the studied area, thereby suitable conservation practices would be adopted in time.
英文关键词	Desertification MEDALUS GIS Modeling Factor analysis
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000703712100010
WOS关键词	LAND DEGRADATION ; WIND EROSION ; SPATIAL-DISTRIBUTION ; SOIL QUALITY ; GIS ; SENSITIVITY ; WATER ; AREA
WOS类目	Soil Science
WOS研究方向	Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/363390
作者单位	[Abuzaid, Ahmed S.] Benha Univ, Fac Agr, Soils & Water Dept, Banha, Egypt; [Abdelatif, Abdelatif D.] Agr Res Ctr Arc, Soil Water & Environm Res Inst SWERI, Giza, Egypt
推荐引用方式 GB/T 7714	Abuzaid, Ahmed S.,Abdelatif, Abdelatif D.. Assessment of desertification using modified MEDALUS model in the north Nile Delta, Egypt[J],2022,405.
APA	Abuzaid, Ahmed S.,&Abdelatif, Abdelatif D..(2022).Assessment of desertification using modified MEDALUS model in the north Nile Delta, Egypt.GEODERMA,405.
MLA	Abuzaid, Ahmed S.,et al."Assessment of desertification using modified MEDALUS model in the north Nile Delta, Egypt".GEODERMA 405(2022).