Land degradation risk assessment of El Fayoum depression, Egypt

Ali, R. R.; Kawy, Wael Ahmed Mohamed Abdel

doi:10.1007/s12517-012-0524-7

Cited by 28 publications

(24 citation statements)

References 7 publications

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“…El-Fayoum soils are inherently very fertile, but with poor management and environmental conditions, the salinity levels and the ESP have increased in the area, which significantly affects the suitability of the studied crops [77,78]. Reducing the severity of the manageable soil limiting factors (EC, ESP, and drainage), where possible, resulted in an increase of soil suitability for all the studied crops under OS.…”

Section: Soil Suitability For Studied Cropsmentioning

confidence: 99%

Assessment of Soil Suitability for Improvement of Soil Factors and Agricultural Management

et al. 2019

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The dramatic growth of the world’s population is increasing the pressure on natural resources, particularly on soil systems. At the same time, inappropriate agricultural practices are causing widespread soil degradation. Improved management of soil resources and identification of the potential agricultural capability of soils is therefore needed to prevent further land degradation, particularly in dryland areas such as Egypt. Here, we present a case study in the El-Fayoum depression (Northern Egypt) to model and map soil suitability for 12 typical Mediterranean crops. Two management scenarios were analyzed: the current situation (CS) and an optimal scenario (OS) of soil variables. The Almagra model was applied to estimate soil suitability under CS and OS. Management options based on the CS assessment were proposed to reduce some limiting factors: a fixed value of 2 dSm−1 for soil salinity and 5% for sodium saturation; these defined the OS. Under optimal management, the OS scenario showed potential, where a notable increase of the area covered by a high suitability class (around 80%) for annual and semi-annual crops was observed. There was also a marked increase (about 70% for CS and 50% for OS) for perennial crops shifting from the marginal to moderate soil suitability class. The results reveal the importance of proper management to massively alter soil suitability into better states in order to achieve sustainable land use in this fertile agro-ecosystem.

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Section: Soil Suitability For Studied Cropsmentioning

confidence: 99%

Assessment of Soil Suitability for Improvement of Soil Factors and Agricultural Management

et al. 2019

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“…Additionally, gypsum is added to improve Faiyum’s soil productivity [43] . In addition, the current status of the soil salinity, sodicity, and water table indicates that most lacustrine and alluvial-lacustrine soils in the Faiyum Depression are actually degraded by salinization, sodification and waterlogging [44] . All of the drainage water samples lie in regions of lacustrine and alluvial-lacustrine soils that are rich in gypsum and soil salts.…”

Section: Discussionmentioning

confidence: 99%

Hydrogeochemical evolution of inland lakes’ water: A study of major element geochemistry in the Wadi El Raiyan depression, Egypt

Mohamed

El-Kammar

Yehia

et al. 2015

Journal of Advanced Research

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Wadi El Raiyan is a great depression located southwest of Cairo in the Western Desert of Egypt. Lake Qarun, located north of the study area, is a closed basin with a high evaporation rate. The source of water in the lake is agricultural and municipal drainage from the El Faiyum province. In 1973, Wadi El Raiyan was connected with the agricultural wastewater drainage system of the Faiyum province and received water that exceeded the capacity of Lake Qarun. Two hydrogeological regimes have been established in the area: (i) higher cultivated land and (ii) lower Wadi El Raiyan depression lakes. The agricultural drainage water of the cultivated land has been collected in one main drain (El Wadi Drain) and directed toward the Wadi El Raiyan depression, forming two lakes at different elevations (upper and lower). In the summer of 2012, the major chemical components were studied using data from 36 stations distributed over both hydrogeological regimes in addition to one water sample collected from Bahr Youssef, the main source of freshwater for the Faiyum province. Chemical analyses were made collaboratively. The major ion geochemical evolution of the drainage water recharging the El Raiyan depression was examined. Geochemically, the Bahr Youssef sample is considered the starting point in the geochemical evolution of the studied surface water. In the cultivated area, major-ion chemistry is generally influenced by chemical weathering of rocks and minerals that are associated with anthropogenic inputs, as well as diffuse urban and/or agricultural drainage. In the depression lakes, the water chemistry generally exhibits an evaporation-dependent evolutionary trend that is further modified by cation exchange and precipitation of carbonate minerals.

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“…This hydrological setting and the increasing human pressure, as a consequence of the expansion in cultivation, have been causing land degradation and deterioration in lake water quality (in particular, salinisation and eutrophication [17,18]). Recent studies indicate that 54% of cultivated soils are affected by a severe risk of chemical degradation, due to climatic, pedological and topographical factors, and 65% are subject to improper land management and irrigation practices, heightening the actual risk [19].…”

Section: Study Areamentioning

confidence: 99%

Multi-Image and Multi-Sensor Change Detection for Long-Term Monitoring of Arid Environments With Landsat Series

Mandanici

Bitelli

2015

Remote Sensing

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An automated procedure has been proposed to monitor by multispectral satellite imagery the cultivation expansion between 1987 and 2013 in the arid environment of the Fayyum Oasis (Egypt), which is subject to land reclamation. A change detection procedure was applied to the four years investigated (1987, 1998, 2003 and 2013). This long-term analysis is based on images from the Landsat series, adopting a classification strategy relying on vegetation index computations. In particular: (a) the consequences of the radiometric differences of three Landsat sensors on the vegetation index values were analyzed using data simulated by a hyperspectral Hyperion image; (b) the problems resulting from harvesting cycles were minimized using five images per year, after a preliminary analysis on the effects deriving from the number of processed images; (c) an accuracy assessment was carried out on the 2003 and 2013 maps using high resolution images for a portion of the investigated area, with an estimated overall accuracy of 91% for the change detection. The method is implemented in a batch procedure and can be applied to other similar environmental contexts, supporting analyses for sustainable development and exploitation of soil and water resources.

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Land degradation risk assessment of El Fayoum depression, Egypt

Cited by 28 publications

References 7 publications

Assessment of Soil Suitability for Improvement of Soil Factors and Agricultural Management

Assessment of Soil Suitability for Improvement of Soil Factors and Agricultural Management

Hydrogeochemical evolution of inland lakes’ water: A study of major element geochemistry in the Wadi El Raiyan depression, Egypt

Multi-Image and Multi-Sensor Change Detection for Long-Term Monitoring of Arid Environments With Landsat Series

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