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	Assessment of sediment yield using RS and GIS at two sub-basins of Dez Watershed, Iran
	Noori Hamed; Seyed Mostafa Siadatmousavi; Mojaradi Barat
来源期刊	International Soil and Water Conservation Research
ISSN	2095-6339
出版年	2016
卷号	4 期号:3 页码:199-206
英文摘要	Soil erosion is a serious threat to soil and water resources in semi-arid regions. Modified Pacific Southwest Inter Agency Committee (MPSIAC) and Erosion Potential Method (EPM), as two well-known models, have shown their performance in many case studies. The goal of present study is to assess the efficiency of these methods for estimating the sediments yield and erosion intensity within short-term and longterm timeframes over two sub-basins of Dez watershed, west of Iran. The results showed that the study area can be categorized into slight, moderate, high and very high erosion zones. Almost half of the study area is highly susceptible to erosion due to the geological formations and land cover. Moreover, the longterm (i.e. 30 years) sediment yield of 387 and 615 (kton) y~(-1) estimated by MPSIAC and EPM models demonstrated the superiority of EPM. Compared to the measured value of 612 (kton) y~(-1), the performance of EPM was astonishing. By splitting the dataset into six periods of five years, the sediment yield was predicted in short-term periods by both aforementioned methods. Such segmentation provides the opportunity to evaluate the impact of extreme flooding events on the models performances. The results showed that both models failed in estimation of sediment load during flood conditions. Nevertheless, the correlation coefficients for estimating the sediment yield were found to be R=0.93 and R=0.85 for EPM and MPSIAC models respectively, for short-term simulations.
英文关键词	Soil erosion GIS Remote sensing Modified Pacific South-West Inter Agency Committee method (MPSIAC) Erosion Potential Method (EPM)
类型	Article
语种	英语
开放获取类型	DOAJ Gold
收录类别	CSCD
WOS研究方向	Science & Technology - Other Topics
CSCD记录号	CSCD:5831920
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/335726
作者单位	Noori Hamed, School of Civil Engineering, Iran University of Science & Technology, Tehran, 1684613114, Iran.; Seyed Mostafa Siadatmousavi, School of Civil Engineering, Iran University of Science & Technology, Tehran, 1684613114, Iran.; Mojaradi Barat, School of Civil Engineering, Iran University of Science & Technology, Tehran, 1684613114, Iran.
推荐引用方式 GB/T 7714	Noori Hamed,Seyed Mostafa Siadatmousavi,Mojaradi Barat. Assessment of sediment yield using RS and GIS at two sub-basins of Dez Watershed, Iran[J],2016,4(3):199-206.
APA	Noori Hamed,Seyed Mostafa Siadatmousavi,&Mojaradi Barat.(2016).Assessment of sediment yield using RS and GIS at two sub-basins of Dez Watershed, Iran.International Soil and Water Conservation Research,4(3),199-206.
MLA	Noori Hamed,et al."Assessment of sediment yield using RS and GIS at two sub-basins of Dez Watershed, Iran".International Soil and Water Conservation Research 4.3(2016):199-206.