干旱区生态环境知识资源中心(Arid): Evaluation of sediment yield in PSIAC and MPSIAC models by using GIS at Toroq Watershed, Northeast of Iran

Arid

	Evaluation of sediment yield in PSIAC and MPSIAC models by using GIS at Toroq Watershed, Northeast of Iran
	Daneshvar Mohammad Reza Mansouri; Bagherzadeh Ali
来源期刊	Frontiers of Earth Science
ISSN	2095-0195
出版年	2012
卷号	6 期号:1 页码:83-94
英文摘要	Regarding the importance of watersheds in arid and semi-arid regions, it is necessary to better protect water supplies such as dam reservoirs. The most efficient way of conserving water sources is to apply proper management to decrease erosion and sedimentation. The first step of this process is to be aware of sediment yield (Q_s)/production and identify erosive zones in upper reach of reservoirs. The present study aims to evaluate Q_s and production in Pacific Southwest Inter-Agency Committee (PSIAC) and modified PSIAC (MPSIAC) models by using satellite data, GIS analysis, and field observations. According to the results, the study area can be categorized into five erosive classes: very high, high, moderate, low and negligible. The east part of the watershed is slightly eroded due to its hard surface geology and relatively flat topography characteristics, while the northern and southern parts of the basin are highly eroded because of the high erodibility potential of soil and intensive cultivation of the area. A comparison of the output maps from PSIAC and MPSIAC models showed that the calculated Q_s in most parts correspond well in both models and with field observations. The results of regression between main determining factors (surface geology, soil, topography and land cover) and Q_s derived from each model indicated moderate to strong correlation coefficient (R~2 = 0.436- 0.996 to 0.893 - 0.998) after PSIAC and MPSIAC models, respectively.
英文关键词	evaluation of sediment yield (Q_s) erodible factors Pacific Southwest Inter-Agency Committee (PSIAC) and modified PSIAC (MPSIAC) models sediment production GIS Toroq Watershed Northeast of Iran
类型	Article
语种	英语
收录类别	CSCD
WOS研究方向	Geology
CSCD记录号	CSCD:4492192
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/335134
作者单位	Daneshvar Mohammad Reza Mansouri, Department of Geography, Mashhad Branch, Islamic Azad University,Iran, Mashhad, Iran.; Bagherzadeh Ali, Department of Agriculture, Mashhad Branch, Islamic Azad University,Iran, Mashhad, Iran.
推荐引用方式 GB/T 7714	Daneshvar Mohammad Reza Mansouri,Bagherzadeh Ali. Evaluation of sediment yield in PSIAC and MPSIAC models by using GIS at Toroq Watershed, Northeast of Iran[J],2012,6(1):83-94.
APA	Daneshvar Mohammad Reza Mansouri,&Bagherzadeh Ali.(2012).Evaluation of sediment yield in PSIAC and MPSIAC models by using GIS at Toroq Watershed, Northeast of Iran.Frontiers of Earth Science,6(1),83-94.
MLA	Daneshvar Mohammad Reza Mansouri,et al."Evaluation of sediment yield in PSIAC and MPSIAC models by using GIS at Toroq Watershed, Northeast of Iran".Frontiers of Earth Science 6.1(2012):83-94.