Characteristics of the Gobi desert and their significance for dust emissions in the Ala Shan Plateau (Central Asia): An experimental study

Wang, X.; Lang, Lili; Hua, Ting; Wang, H.; Zhang, C.; Wang, Z.

doi:10.1016/j.jaridenv.2012.01.014

Cited by 48 publications

(15 citation statements)

References 51 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…These sites were selected because they were representative of the Gobi surfaces in this area and, therefore, captured key characteristics of the region. Details of our sampling criteria and collection procedures are described in Wang et al (2012a). Briefly, bulk samples were obtained by placing a sample box on the surface, removing the soil around the box, and then excavating about 80 cm down so that the box could be lowered around the sampled soil without disturbing the surface or sides of the sample.…”

Section: Sampling Location and Criteriamentioning

confidence: 99%

Geochemical and magnetic characteristics of aeolian transported materials under different near-surface wind fields: An experimental study

et al. 2015

View full text Add to dashboard Cite

By combining field investigations, field sampling, wind-tunnel experiments, and laboratory measurements, the relationships between near-surface winds and the geochemical and magnetic characteristics of windtransported materials were statistically analyzed. Our study was conducted using bulk surface samples from a major potential dust source area in Central Asia (the Ala Shan Plateau). Under near-surface wind velocities ranging from 8 to 22 m/s, the coefficients of variation ranged between 1.6% and 14.9% for χ lf , 1.4% and 11.0% for χ ARM , and 0.7% and 12.3% for SIRM of the transported materials. For the 26 elements and oxides investigated, the coefficients of variation of Ti, Cr, As, Zr, Ce, Pb, and Cu in the samples were greater than 10%. No consistent patterns were found between magnetic characteristics and elemental and iron oxide concentrations as a function of variations in near-surface wind velocities. In potential dust source areas under near-surface wind velocities, there are variations in the relationships between magnetic and geochemical characteristics in the fine fractions of transported materials with different particle sizes. Given the wide variation in magnetic and geochemical characteristics of aeolian-transported materials under different near-surface winds, their use as proxies for past climate reconstruction must be carefully appraised.

show abstract

Section: Sampling Location and Criteriamentioning

confidence: 99%

Geochemical and magnetic characteristics of aeolian transported materials under different near-surface wind fields: An experimental study

et al. 2015

View full text Add to dashboard Cite

show abstract

“…; Wang et al . ). In the Taklimakan Desert, high near‐surface winds may decrease the amount of fine material deposited within the nebkhas.…”

Section: Discussionmentioning

confidence: 97%

Variations in the wind‐energy regime of the Taklimakan Desert, central Asia, over the last 700 years as inferred from nebkha sedimentology and chronology

Wang

Lang

Hua

et al. 2014

Boreas

View full text Add to dashboard Cite

H. 2014 (October): Variations in the wind-energy regime of the Taklimakan Desert, central Asia, over the last 700 years as inferred from nebkha sedimentology and chronology. the Taklimakan Desert was a relatively high wind-energy environment.Although changes in the wind-energy regime in the desert were mainly in phase with fluctuations of the Siberian High, the wind systems and the variations in wind energy exhibit slight differences when compared with the Tarim Basin. Nebkhas that develop in this region originate from the surfaces of mobile dunes or sand sheets, which differs from the origins of nebkhas found in other arid regions of China.

show abstract

“…1) using 30 cm30 cm30 cm sample boxes. Details of the sampling process have been described by Wang et al (2012a). In summary, the criteria for the samples collected at each site were that they were intact (sealed with no cracks) and free from anthropogenic impacts.…”

Section: Field Samplingmentioning

confidence: 99%

“…The blow-type and non-circulating wind tunnel had a total length of 37.8 m with a 16.2-m-long test section. The cross-sectional area of the test section was 0.6 m1.0 m. The free-stream wind velocity in the wind tunnel could be adjusted from 1 to 40 m/s, as described in detail by Dong et al (2004) and Wang et al (2012aWang et al ( , 2013b. We fixed each sample in place in the working section of the wind tunnel with the sample surface at the same level as the bottom of the tunnel.…”

Section: Wind Tunnel Experimentsmentioning

confidence: 99%

Effects of aeolian processes on nutrient loss from surface soils and their significance for sandy desertification in Mu Us Desert, China: a wind tunnel approach

Lang

Wang

et al. 2015

J. Arid Land

View full text Add to dashboard Cite

Mu Us Desert, a region with high aeolian activity, is at extremely high risk of sandy desertification. Using surface soil samples collected from Mu Us Desert of northern China, we evaluated the effects of aeolian processes on nutrient loss from surface soils by employing wind tunnel experiments. The experiments were conducted using free-stream wind velocities of 14, 16, 18 and 22 m/s. Our results showed that the fine particles (<50 μm in diameter; 12.28% of all transported materials) carrying large nutrient loadings were exported outside the study area by aeolian processes. After the erodible fine particles were transported away from the soil surfaces at low wind velocity (i.e. 14 m/s), the following relatively high wind velocity (i.e. 22 m/s) did not have any significant effect on nutrient export, because the coefficients of variation for soil organic matter, total phosphorus, total nitrogen and available potassium were usually <5%. Our experimental results confirmed that aeolian processes result in a large amount of nutrient export, and consequently increase the risk of sandy desertification in arid and semi-arid ecosystems.Keywords: sandy desertification; aeolian activity; soil nutrients; Mu Us Desert Citation: LANG Lili, WANG Xunming, WANG Guangtao, HUA Ting, WANG Hongtao. 2015. Effects of aeolian processes on nutrient loss from surface soils and their significance for sandy desertification in Mu Us Desert, China: a wind tunnel approach. Journal of Arid Land, 7(4): 421-428.

show abstract

Characteristics of the Gobi desert and their significance for dust emissions in the Ala Shan Plateau (Central Asia): An experimental study

Cited by 48 publications

References 51 publications

Geochemical and magnetic characteristics of aeolian transported materials under different near-surface wind fields: An experimental study

Geochemical and magnetic characteristics of aeolian transported materials under different near-surface wind fields: An experimental study

Variations in the wind‐energy regime of the Taklimakan Desert, central Asia, over the last 700 years as inferred from nebkha sedimentology and chronology

Effects of aeolian processes on nutrient loss from surface soils and their significance for sandy desertification in Mu Us Desert, China: a wind tunnel approach

Contact Info

Product

Resources

About