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DOI	10.1016/j.aeolia.2021.100747
	Assessing the PM10 emission potential of sandy, dryland soils in South Africa using the PI-SWERL
	Vos, Heleen C.; Fister, Wolfgang; Holdt, Johanna R. von; Eckardt, Frank D.; Palmer, Anthony R.; Kuhn, Nikolaus J.
通讯作者	Vos, HC (corresponding author), Univ Basel, Phys Geog & Environm Change Res Grp, Basel, Switzerland.
来源期刊	AEOLIAN RESEARCH
ISSN	1875-9637
EISSN	2212-1684
出版年	2021
卷号	53
英文摘要	The Free State has been identified as the region with the most dust sources in South Africa. These dust sources can be linked with the large, heavily cultivated cropland areas in this province, which leaves fields vulnerable to wind erosion after the harvest in the winter. For this study, the focus was on the factors that influence the emission from bare, flat surfaces on agricultural lands in this region. The Portable In-Situ Wind Erosion Laboratory (PI-SWERL) was used to measure the emission flux from adjacent crusted and loose surfaces, which was combined with shear strength, moisture, and soil texture measurements. Boosted regression tree (BRT) analyses were used to identify the variable with the highest relevance on the emission flux. On the whole dataset, that the shear strength is the most important variable that controls the emission. This is reflected in the significantly lower emission from the crusted surfaces (0.49 mg m- 2 s- 1) compared to that of loose surfaces (2.34 mg m- 2 s- 1). However, for crusted surfaces, the presence of abraders appeared to be the most significant factor in emission, showing a power relationship between the abrader count and the emission flux (R2 = 0.76). In the case of the loose surfaces, the presence of clay and silt was a major influence in emissivity, with a linear relationship between the two variables (R2 = 0.68). This difference in factors depending on the agricultural disturbance, asks for a more holistic approach when predicting emission from such arid cropland areas.
英文关键词	PI-SWERL Dust emission Croplands South Africa Soil crust
类型	Article
语种	英语
开放获取类型	hybrid
收录类别	SCI-E
WOS记录号	WOS:000702573100004
WOS关键词	FUGITIVE DUST SOURCES ; WIND EROSION ; AEOLIAN DUST ; MOJAVE DESERT ; HUMAN HEALTH ; TRANSPORT ; TUNNEL ; DYNAMICS ; SEDIMENT ; MODEL
WOS类目	Geography, Physical
WOS研究方向	Physical Geography
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/362339
作者单位	[Vos, Heleen C.; Fister, Wolfgang; Kuhn, Nikolaus J.] Univ Basel, Phys Geog & Environm Change Res Grp, Basel, Switzerland; [Holdt, Johanna R. von; Eckardt, Frank D.] Univ Cape Town, Dept Environm & Geog Sci, Cape Town, South Africa; [Palmer, Anthony R.] Rhodes Univ, Inst Water Res, Grahamstown, South Africa
推荐引用方式 GB/T 7714	Vos, Heleen C.,Fister, Wolfgang,Holdt, Johanna R. von,et al. Assessing the PM10 emission potential of sandy, dryland soils in South Africa using the PI-SWERL[J],2021,53.
APA	Vos, Heleen C.,Fister, Wolfgang,Holdt, Johanna R. von,Eckardt, Frank D.,Palmer, Anthony R.,&Kuhn, Nikolaus J..(2021).Assessing the PM10 emission potential of sandy, dryland soils in South Africa using the PI-SWERL.AEOLIAN RESEARCH,53.
MLA	Vos, Heleen C.,et al."Assessing the PM10 emission potential of sandy, dryland soils in South Africa using the PI-SWERL".AEOLIAN RESEARCH 53(2021).