Dust Measurements in the Egyptian Northwest Coastal Zone

Fryrear, D. W.; Wassif, M. M.; Tadrus, S. F.; Ali, Alaa A.

doi:10.13031/2013.25242

Cited by 15 publications

(6 citation statements)

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“…Wind erosion represents a key environmental issue across the world (Van Pelt et al, 2004;Zhang et al, 2011;Borrelli et al, 2016), especially in arid and semi-arid areas, e.g., southeast Spain (Segovia et al, 2017), northern China (Zhao et al, 2006), Argentinean Pampas (Buschiazzo and Zobeck, 2008), and Egypt (Fryrear et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

Impact of near-surface wind speed variability on wind erosion in the eastern agro-pastoral transitional zone of Northern China, 1982–2016

Zhang

Azorín-Molina

Shi

et al. 2019

Agricultural and Forest Meteorology

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Wind erosion in arid and semi-arid areas is an important global environmental issue, and changes in wind speed trends over time play a key role in wind erosion dynamics. In a warming climate, scientists have recently observed a widespread decline in wind speed, termed "stilling". Here, we apply the Revised Wind Erosion Equation Model (RWEQ) to simulate the variability of wind erosion and quantify the impact of wind speed changes on soil degradation dynamics over the eastern agro-pastoral transitional zone of Northern China from 1982 to 2016. Our results show that a significant (i.e., p<0.05) decrease (-0.007 m s-1 year-1) of near-surface wind speed was observed annually, with significant declining trends in spring (-0.010 m s-1 year-1)and autumn (-0.009 m s-1 year-1). At the same time, wind erosion simulations reveal a negative trend for the annual soil loss from wind erosion (-6.20 t hectare-2 year-1 , p<0.05; affecting 99.8% of the study region), with significant declining trends in all seasons, particularly in spring (-3.49 t hectare-2 year-1) and autumn (-1.26 hectare-2 year-1). Further, we isolate the effects of wind variability on wind erosion from 1982 to 2016 by the model variable control method. This shows that wind speed variability strongly weakens wind erosion at-8.14 t hectare-2 year-1 (p<0.05) annually, with the strongest stilling recorded in spring leading to major decreases of wind erosion in spring (-4.77 t hectare-2 year-1 , p<0.05). Meanwhile, the weakest stilling in summer had the opposite influence on wind erosion (+0.40 t hectare-2 year-1 , p<0.10). To summarize, our findings have shown a significant impact of wind stilling on the decline of soil erosion rates in Northern China.

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Section: Introductionmentioning

confidence: 99%

Impact of near-surface wind speed variability on wind erosion in the eastern agro-pastoral transitional zone of Northern China, 1982–2016

Zhang

Azorín-Molina

Shi

et al. 2019

Agricultural and Forest Meteorology

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“…The RWEQ model requires fewer parameters compared to the WEPS and WESS and can be scaled up. Therefore, the RWEQ model has not only been successfully applied in the United States (Van Pelt et al 2004), but also has been widely used in other geographical environments such as Argentina (Buschiazzo and Zobeck 2008), Egypt (Fryrear et al 2008), and China (Guo et al 2013).…”

Section: Methodsmentioning

confidence: 99%

Wind Erosion Climate Change in Northern China During 1981–2016

Zhang

Wang

Zou

et al. 2020

Int J Disaster Risk Sci

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Wind erosion is largely controlled by climate conditions. In this study, we examined the influences of changes in wind speed, soil wetness, snow cover, and vegetation cover related to climate change on wind erosion in northern China during 1981-2016. We used the wind erosion force, defined as wind factor in the Revised Wind Erosion Equation Model, to describe the effect of wind speed on wind erosion. The results show that wind erosion force presented a long-term decreasing trend in the southern Northwest, northern Northwest, and eastern northern China during 1981-2016. In the Gobi Desert, the wind erosion force presented for 1981-1992 a decreasing trend, for 1992-2012 an increasing trend, and thereafter a weakly decreasing trend. In comparison to wind speed, soil wetness and snow cover had weaker influences on wind erosion in northern China, while vegetation cover played a significant role in the decrease of wind erosion in the eastern northern China during 1982-2015.

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“…Generally, highest wind speed occurred during the period from March to July and included the khamassien wind period. Fryrear et al (2008) and Afifi and Gad (2011) stated that the average wind speed ranged between 3.8 to 5.2 m s -1 . The prevailing wind direction is mostly from the northwest.…”

Section: Meteorological Data Of El Raml Areamentioning

confidence: 99%

“…Misuse and mismanagement of lands in this area can accelerate soil erosion by wind (Ghaley et al, 2018). Fryrear et al (2008) reported that wind erosion in the NWCZ of Egypt is a major problem because of the sandy nature of soils. There are many examples of successful erosion control, the widespread of which minimum tillage and no-tillage practices (FAO, 2019).…”

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confidence: 99%