干旱区生态环境知识资源中心(Arid): Quantifying the effect of geomorphology on aeolian dust emission potential in northern China

Arid

DOI	10.1002/esp.4714
	Quantifying the effect of geomorphology on aeolian dust emission potential in northern China
	Cui, Mengchun 1,2; Lu, Huayu 1; Wiggs, Giles F. S.2; Etyemezian, Vicken 3; Sweeney, Mark R.4; Xu, Zhiwei 1
通讯作者	Lu, Huayu
来源期刊	EARTH SURFACE PROCESSES AND LANDFORMS
ISSN	0197-9337
EISSN	1096-9837
出版年	2019
卷号	44 期号:14 页码:2872-2884
英文摘要	Representation of dust sources remains a key challenge in quantifying the dust cycle and its environmental and climatic impacts. Direct measurements of dust fluxes from different landform types are useful in understanding the nature of dust emission and characterizing the dynamics of soil erodibility. In this study we used the PI-SWERL (R) instrument over a seasonal cycle to quantify the potential for PM10 (particles with diameter <= 10 mu m) emission from several typical landform types across the Tengger Desert and Mu Us Sandy Land, northern China. Our results indicate that sparse grasslands and coppice dunes showed relatively high emission potentials, with emitted fluxes ranging from 10(-1) to 10(1) mg m(-2) s(-1). These values were up to five times those emitted from sand dunes, and one to two orders of magnitude greater than the emissions from dry lake beds, stone pavements and dense grasslands. Generally, PM10 emission fluxes were seen to peak in the spring months, with significant reductions in summer and autumn (by up to 95%), and in winter (by up to 98%). Variations in soil moisture were likely a primary controlling factor responsible for this seasonality in PM10 emission. Our data provide a relative quantification of differences in dust emission potential from several key landform types. Such data allow for the evaluation of current dust source schemes proposed by prior researchers. Moreover, our data will allow improvements in properly characterizing the erodibility of dust source regions and hence refine the parameterization of dust emission in climate models. (c) 2019 John Wiley & Sons, Ltd. (c) 2019 John Wiley & Sons, Ltd.
英文关键词	PM10 dust emission northern China seasonality PI-SWERL
类型	Article
语种	英语
国家	Peoples R China ; England ; USA
开放获取类型	Green Submitted
收录类别	SCI-E
WOS记录号	WOS:000495433200011
WOS关键词	DESERT DUST ; VEGETATION COVER ; SOIL-MOISTURE ; WIND EROSION ; SURFACE-ROUGHNESS ; DUNE MOBILITY ; MOJAVE DESERT ; LAND-COVER ; PI-SWERL ; CLIMATE
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS研究方向	Physical Geography ; Geology
EI主题词	2019-11-01
来源机构	南京大学 ; University of Oxford ; Desert Research Institute
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/310558
作者单位	1.Nanjing Univ, Sch Geog & Ocean Sci, Nanjing, Jiangsu, Peoples R China; 2.Univ Oxford, Sch Geog & Environm, Oxford, England; 3.Desert Res Inst, Div Atmospher Sci, Las Vegas, NV USA; 4.Univ South Dakota, Dept Sustainabil & Environm, Vermillion, SD USA
推荐引用方式 GB/T 7714	Cui, Mengchun,Lu, Huayu,Wiggs, Giles F. S.,et al. Quantifying the effect of geomorphology on aeolian dust emission potential in northern China[J]. 南京大学, University of Oxford, Desert Research Institute,2019,44(14):2872-2884.
APA	Cui, Mengchun,Lu, Huayu,Wiggs, Giles F. S.,Etyemezian, Vicken,Sweeney, Mark R.,&Xu, Zhiwei.(2019).Quantifying the effect of geomorphology on aeolian dust emission potential in northern China.EARTH SURFACE PROCESSES AND LANDFORMS,44(14),2872-2884.
MLA	Cui, Mengchun,et al."Quantifying the effect of geomorphology on aeolian dust emission potential in northern China".EARTH SURFACE PROCESSES AND LANDFORMS 44.14(2019):2872-2884.