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DOI	10.1016/j.scitotenv.2014.01.095
	Estimation of saltation emission in the Kubuqi Desert, North China
	Du, Heqiang; Xue, Xian; Wang, Tao
发表日期	2014
ISSN	0048-9697
EISSN	1879-1026
卷号	479
英文摘要	The Kubuqi Desert suffered more severe wind erosion hazard. Every year, a mass of aeolian sand was blown in the Ten Tributaries that are tributaries of the Yellow River. To estimate the quantity of aeolian sediment blown into the Ten Tributaries from the Kubuqi Desert, it is necessary to simulate the saltation processes of the Kubuqi Desert A saltation submodel of the IWEMS (Integrated Wind-Erosion Modeling System) and its accompanying RS (Remote Sensing) and GIS (Geographic Information System) methods were used to model saltation emissions in the Kubuqi Desert. To calibrate the saltation submodel, frontal area of vegetation, soil moisture, wind velocity and saltation sediment were observed synchronously on several points in 2011 and 2012. In this study, a model namely BEACH (Bridge Event And Continuous Hydrological) was introduced to simulate the daily soil moisture. Using the surface parameters (frontal area of vegetation and soil moisture) along with the observed wind velocities and saltation sediments for the observed points, the saltation model was calibrated and validated. To reduce the simulate error, a subdaily wind velocity program, WINDGEN was introduced in this model to simulate the hourly wind velocity of the Kubuqi Desert By incorporating simulated hourly wind velocity, and model variables, the saltation emission of the Kubuqi Desert was modeled. The model results show that the total sediment flow rate was 1-30.99 tons/m over the last 10 years (2001-2010). The saltation emission mainly occurs in the north central part of the Kubuqi Desert in winter and spring. Integrating the wind directions, the quantity of the aeolian sediment that deposits in the Ten Tributaries was estimated. Compared with the observed data by the local government and hydrometric stations, our estimation is reasonable. (C) 2014 Elsevier B.V. All rights reserved.
关键词	Aeolian sand sediment BEACH Integrated Wind-Erosion Modeling System NDVI WINDGEN
学科领域	Environmental Sciences & Ecology
语种	英语
WOS研究方向	Environmental Sciences
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
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/111732
作者单位	Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Du, Heqiang,Xue, Xian,Wang, Tao. Estimation of saltation emission in the Kubuqi Desert, North China[J]. 中国科学院西北生态环境资源研究院,2014,479.
APA	Du, Heqiang,Xue, Xian,&Wang, Tao.(2014).Estimation of saltation emission in the Kubuqi Desert, North China.SCIENCE OF THE TOTAL ENVIRONMENT,479.
MLA	Du, Heqiang,et al."Estimation of saltation emission in the Kubuqi Desert, North China".SCIENCE OF THE TOTAL ENVIRONMENT 479(2014).