干旱区生态环境知识资源中心(Arid): Introducing an appropriate empirical method for estimating sediment delivery ratio (SDR) via sedimentometry of check-dams in small catchments in arid regions (Semnan province, Iran)

Arid

DOI	10.1007/s12517-021-07322-w
	Introducing an appropriate empirical method for estimating sediment delivery ratio (SDR) via sedimentometry of check-dams in small catchments in arid regions (Semnan province, Iran)
	Etemadi, Hossein; Nikoo, Shima; Hashemi, Seyed Ali Asghar
通讯作者	Nikoo, S (corresponding author), Semnan Univ, Fac Desert Studies, Dept Combating Desertificat, Campus 1, Semnan 3513119111, Iran.
来源期刊	ARABIAN JOURNAL OF GEOSCIENCES
ISSN	1866-7511
EISSN	1866-7538
出版年	2021
卷号	14 期号:12
英文摘要	One of the main challenges in controlling soil erosion and sediment load in desert areas is the lack of data. Therefore, estimation of soil erosion in such watersheds is possible by determining the sediment delivery ratio (SDR). The purpose of this study is comparison of the results of different methods for calculating SDR with its actual amount in arid areas and determining the best method. The study areas include 6 watersheds for calibration phase and 1 watershed for validation phase in Semnan province in the north of Iran. The volume of trapped sediment upstream the study area check-dams was calculated by evaluating the changes in the dams' reservoirs morphological characteristics between successive events. The rain simulator method was used to obtain actual SDR. The SDR value was also calculated using 14 empirical methods. Comparison of observed and calculated SDR values indicates the different performance of the empirical methods. It is not possible to introduce one of these methods for calculating SDR in all studied basins, but due to the lowest relative error rate of the USDA-SCS (1983) model, this model was calibrated. The relative mean squared error for calibrated model was 0.2241 (low error). The results obtained by the calibrated model corresponded to about 80% to the values of the observed SDR. Finally, the relative error rate in the validation stage for the basin that was used in validation of the calibrated model was calculated as 1.17%, so the results of the calibrated model can be accepted.
英文关键词	SDR Arid regions Calibration Small catchment
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000677556200060
WOS关键词	BASIN
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/362525
作者单位	[Etemadi, Hossein; Nikoo, Shima] Semnan Univ, Fac Desert Studies, Dept Combating Desertificat, Campus 1, Semnan 3513119111, Iran; [Hashemi, Seyed Ali Asghar] Semnan Agr & Nat Resources Res & Educ Ctr, Dept Watershed Management, Basij Blvd, Semnan 35145319, Iran
推荐引用方式 GB/T 7714	Etemadi, Hossein,Nikoo, Shima,Hashemi, Seyed Ali Asghar. Introducing an appropriate empirical method for estimating sediment delivery ratio (SDR) via sedimentometry of check-dams in small catchments in arid regions (Semnan province, Iran)[J],2021,14(12).
APA	Etemadi, Hossein,Nikoo, Shima,&Hashemi, Seyed Ali Asghar.(2021).Introducing an appropriate empirical method for estimating sediment delivery ratio (SDR) via sedimentometry of check-dams in small catchments in arid regions (Semnan province, Iran).ARABIAN JOURNAL OF GEOSCIENCES,14(12).
MLA	Etemadi, Hossein,et al."Introducing an appropriate empirical method for estimating sediment delivery ratio (SDR) via sedimentometry of check-dams in small catchments in arid regions (Semnan province, Iran)".ARABIAN JOURNAL OF GEOSCIENCES 14.12(2021).