气候变化领域集成服务门户(CCPortal): Comparison of dust emission ability of sand desert, gravel desert (Gobi), and farmland in northern China

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DOI	10.1016/j.catena.2021.105215
	Comparison of dust emission ability of sand desert, gravel desert (Gobi), and farmland in northern China
	Wang, Ren-De; Li, Qing; Zhang, Chun-Lai; Wang, Zhen-Ting; Guo, Zhong-Ling; Chang, Chun-Ping; Li, Ji-Feng
通讯作者	Li, Q (通讯作者)，Hebei Acad Sci, Hebei Engn Res Ctr Geog Informat Applicat, Inst Geog Sci, Shijiazhuang 050011, Hebei, Peoples R China.
发表日期	2021
ISSN	0341-8162
EISSN	1872-6887
卷号	201
英文摘要	It is unclear which of the land types of sand desert, gravel desert (Gobi), and farmland acts as the major source of dust emission in northern China. Based on field observations, this study compared the dust emission ability (E) of the three land types and investigated the principal influencing factors, i.e., horizontal mass flux (Q) and dust emission efficiency (mu). Results showed that E was greatest for sand desert, followed by Gobi and then farmland at low friction velocities (u() < 0.23 m s(-1)). However, with the increase of u(), the exponential rate of increase of E was fastest for farmland, followed by Gobi and then sand desert. This is because the rates of increase of both Q and mu were fastest for farmland and slowest for sand desert. Consequently, as u() increased the E of both Gobi and farmland gradually exceeded that of sand desert. Gobi was found to have the greatest E under most u() conditions (0.23-0.90 m s(-1)) because of the overlapping effects of the comparatively strong Q and high mu. The E of farmland exceeded that of Gobi under extreme u() conditions (>0.90 m s(-1)) owing to its lower Q but faster rate of increase of Q and mu as u() increased. The findings of this study illustrate that the effect of wind velocity and dust size should be taken into account when comparing the E of different land types.
英文关键词	Dust emission ability; Horizontal mass flux; Dust emission efficiency; Land type; Northern China
语种	英语
WOS研究方向	Geology ; Agriculture ; Water Resources
WOS类目	Geosciences, Multidisciplinary ; Soil Science ; Water Resources
WOS记录号	WOS:000631043700028
来源期刊	CATENA
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/254927
作者单位	[Wang, Ren-De; Li, Qing] Hebei Acad Sci, Hebei Engn Res Ctr Geog Informat Applicat, Inst Geog Sci, Shijiazhuang 050011, Hebei, Peoples R China; [Zhang, Chun-Lai] Beijing Normal Univ, Fac Geog Sci, State Key Lab Earth Surface Proc & Resource Ecol, Beijing 100875, Peoples R China; [Wang, Zhen-Ting] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Res Lab Desert & Desertificat, Lanzhou 730000, Gansu, Peoples R China; [Guo, Zhong-Ling; Chang, Chun-Ping; Li, Ji-Feng] Hebei Normal Univ, Coll Resource & Environm Sci, Hebei Key Lab Environm Change & Ecol Construct, Shijiazhuang 050024, Hebei, Peoples R China
推荐引用方式 GB/T 7714	Wang, Ren-De,Li, Qing,Zhang, Chun-Lai,et al. Comparison of dust emission ability of sand desert, gravel desert (Gobi), and farmland in northern China[J]. 中国科学院西北生态环境资源研究院,2021,201.
APA	Wang, Ren-De.,Li, Qing.,Zhang, Chun-Lai.,Wang, Zhen-Ting.,Guo, Zhong-Ling.,...&Li, Ji-Feng.(2021).Comparison of dust emission ability of sand desert, gravel desert (Gobi), and farmland in northern China.CATENA,201.
MLA	Wang, Ren-De,et al."Comparison of dust emission ability of sand desert, gravel desert (Gobi), and farmland in northern China".CATENA 201(2021).