Determining soil erosion and threshold friction velocity at different soil moisture conditions using a portable wind tunnel

Nourzadeh, Mehdi; Bahrami, Hossein; Fryrear, D. W.

doi:10.1127/0372-8854/2012/0089

Cited by 11 publications

(9 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Soil moisture generates tension between soil particles, reinforcing the cohesive force between particles and lowering the erodibility of the soil by wind, ultimately enhancing the resistance of soil surface to wind erosion (Han et al, 2012;Nourzadeh et al, 2013;Bu et al, 2015;Bergametti et al, 2016). Furthermore, with increasing water content, the critical friction speed increased in increments proportional to the soil moisture.…”

Section: Discussionmentioning

confidence: 99%

“…In this study, we found a negative correlation between soil moisture and wind speed, i.e., the higher the soil moisture, the lower the intensity of wind erosion. The threshold shear velocity increases proportionally with increasing soil moisture (Luo and Dong, 2005), while the wind erosion rate decreases with increasing soil moisture with a quadratic power function (Nourzadeh et al, 2013). Overall, the rate of sand transport decreases with increasing soil moisture.…”

Section: Discussionmentioning

confidence: 99%

“…Yi et al (2006) found that the amount of wind erosion decreased with increasing soil moisture content from 1.41% to 3.83%, showing a negative power function. Nourzadeh et al (2013) conducted a wind tunnel simulation experiment and found that soil moisture had a remarkable inhibitive effect on the surface wind erosion and the threshold wind speed of soil increased with increasing surface moisture. A research conducted in the coast of North Wales showed that the critical humidity value affecting the transport of wet sands was in the range of 4%-6% (Wiggs et al, 2004).…”

Section: Discussionmentioning

confidence: 99%

“…Some soil particles fall and are entrapped in the sediment, attenuating the direct impact of wind on the surface, thereby inhibiting soil wind erosion (Raupach et al, 2001;Bauer et al, 2004;Hesse and Simpson, 2006;Zobeck and van Pelt, 2006). Within a certain soil moisture range, the higher the moisture content, the stronger the tension and cohesion between the particles (Pye and Tsoar, 1990;Wang et al, 2009;Han et al, 2012;Nourzadeh et al, 2013); and the denser the plant growth, the higher the vegetation coverage and the greater the protective effect of the vegetation against aeolian flow. Thus, vegetation can effectively reduce wind speed and protect soil particles.…”

Section: Discussionmentioning

confidence: 99%

See 3 more Smart Citations

Interactive effects of wind speed, vegetation coverage and soil moisture in controlling wind erosion in a temperate desert steppe, Inner Mongolia of China

et al. 2018

View full text Add to dashboard Cite

The rapid desertification of grasslands in Inner Mongolia of China poses a significant ecological threaten to northern China. The combined effects of anthropogenic disturbances (e.g., overgrazing) and biophysical processes (e.g., soil erosion) have led to vegetation degradation and the consequent acceleration of regional desertification. Thus, mitigating the accelerated wind erosion, a cause and effect of grassland desertification, is critical for the sustainable management of grasslands. Here, a combination of mobile wind tunnel experiments and wind erosion model was used to explore the effects of different levels of vegetation coverage, soil moisture and wind speed on wind erosion at different positions of a slope inside an enclosed desert steppe in the Xilamuren grassland of Inner Mongolia. The results indicated a significant spatial difference in wind erosion intensities depending on the vegetation coverage, with a strong decreasing trend from the top to the base of the slope. Increasing vegetation coverage resulted in a rapid decrease in wind erosion as explained by a power function correlation. Vegetation coverage was found to be a dominant control on wind erosion by increasing the surface roughness and by lowering the threshold wind velocity for erosion. The critical vegetation coverage required for effectively controlling wind erosion was found to be higher than 60%. Further, the wind erosion rates were negatively correlated with surface soil moisture and the mass flux in aeolian sand transport increased with increasing wind speed. We developed a mathematical model of wind erosion based on the results of an orthogonal array design. The results from the model simulation indicated that the standardized regression coefficients of the main effects of the three factors (vegetation coverage, soil moisture and wind speed) on the mass flux in aeolian sand transport were in the following order: wind speed>vegetation coverage>soil moisture. These three factors had different levels of interactive effects on the mass flux in aeolian sand transport. Our results will improve the understanding of the interactive effects of wind speed, vegetation coverage and soil moisture in controlling wind erosion in desert steppes, and will be helpful for the design of desertification control programs in future.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

See 2 more Smart Citations

Interactive effects of wind speed, vegetation coverage and soil moisture in controlling wind erosion in a temperate desert steppe, Inner Mongolia of China

et al. 2018

View full text Add to dashboard Cite

show abstract

“…SOC and TN in the investigated catchment, erosion-induced SOC and TN losses per year are around 1·2×10 6 and 0·1×10 6 tons. Nourzadeh et al (2013) studied the effects of soil moisture on the threshold friction velocity wind erosion, horizontal flux of sediment and dust concentration in Khuzestan province and reported that soil moisture increases the threshold friction velocity and has reduced sediment horizontal transport and dust concentrations.…”

Section: Introductionmentioning

confidence: 99%

Effect of mulching on soil nutrient loss reduction, case study of western lands Khuzestan province, Iran

Shahnavaz¹,

Haddad²,

Gholami³

et al. 2017

JEBAS

View full text Add to dashboard Cite

One major negative effects of wind erosion is the loss of fertile soil which reduce the soil productivity. This study was conducted to evaluate the effect of wind erosion on the loss soil fertility and organic matter. Further, the effect of mulching on the reduction of soil erosion was also studied in present study. Study was conducted at the West Khuzestan province of Iran and soil loss situation was created by using simulator. Results of study revealed that average soil wind erosion was 26.73, 24.58 and 16.36Kg/m 2 /h in Borvayeh, Alvan and Hoveyzeh, respectively. Significant difference was reported between the control (without use of any stabilizer) and samples treated with polymer. Average soil erosion is very high in soil without any stabilizer but the rate of erosion, compared to the control sample. The results of study showed that wind erosion causes loss of nitrogen in soil and it was reported maximum (0.008 kg/m 2 /h) in the soil of Hoveyzeh. Further maximum loss in phosphorus (1.1 kg/m 2 /h) and organic matter (0.49 kg/m 2 /h) was reported from the soil of Alvan. This nutrient loss may cause serious environmental and economic problems in the land exposed to long term erosion. The use of polymer and vegetable-based mulch with structural stability, on an average, reduced 99.5% loss soil elements (except in concentrations 15%vegetable-based mulch that reduced 13.2 % loss of soil elements).Use of polymers enhanced the stability and connections aggregates in surface soil through the formation of the surface layer and resistant to corrosive force winds prevent the dust, soil loss and nutrient loss.

show abstract

Tunnel Modeling of Dust Concentrations that Affect the Environment of Ahvaz City in Iran

Ghomeishi,

Ghomeshi,

Mahmoodian Shooshtari

et al. 2023

Iran J Sci Technol Trans Civ Eng

View full text Add to dashboard Cite

Determining soil erosion and threshold friction velocity at different soil moisture conditions using a portable wind tunnel

Cited by 11 publications

References 0 publications

Interactive effects of wind speed, vegetation coverage and soil moisture in controlling wind erosion in a temperate desert steppe, Inner Mongolia of China

Interactive effects of wind speed, vegetation coverage and soil moisture in controlling wind erosion in a temperate desert steppe, Inner Mongolia of China

Effect of mulching on soil nutrient loss reduction, case study of western lands Khuzestan province, Iran

Tunnel Modeling of Dust Concentrations that Affect the Environment of Ahvaz City in Iran

Contact Info

Product

Resources

About