نتایج جستجو برای: sediment and soil erosion in watersheds although

تعداد نتایج: 21772706  

Journal: :Open Engineering 2022

Abstract Soil functions such as water storage, soil filtration, and reducing reservoir life due to sediment load are directly affected by the process of “soil erosion.” The Universal Loss Equation was adopted predict erodibility factor for watersheds feeding Al-Shewicha trough. K -average factor’s determined value 0.156, indicating that -factor had substantial variability. values linked high sa...

2016
Fengpeng Han Lulu Ren Xingchang Zhang Zhanbin Li

In the Loess Plateau, soil erosion has not only caused serious ecological and environmental problems but has also impacted downstream areas. Therefore, a model is needed to guide the comprehensive control of soil erosion. In this study, we introduced the WEPP model to simulate soil erosion both at the slope and watershed scales. Our analyses showed that: the simulated values at the slope scale ...

Most of our country is located in arid and semiarid climate which have high soil erosion and sediment production, therefore, the study of soil erosion and sediment yield and also evaluation of the effective factors on sediment production are very important in proper management of a watershed. The aim of present study is the efficiency evaluation of MUSLE model in sediment estimation in the stor...

Journal: :مرتع و آبخیزداری 0
عطاالله کاویان استادیار دانشکده منابع طبیعی، دانشگاه علومکشاورزی و منابع طبیعی ساری، ایران علی آزموده دانش آموخته کارشناسی ارشد آبخیزداری، دانشکده منابع طبیعی، دانشگاه علوم کشاورزی و منابع طبیعی ساری، ایران کریم سلیمانی دانشیار دانشکده منابع طبیعی، دانشگاه علوم کشاورزی و منابع طبیعی ساری، ایران قربان وهاب زاده استادیار دانشکده منابع طبیعی، دانشگاه علوم کشاورزی و منابع طبیعی ساری، ایران

globally, soil erosion is one of the most important environmental problems which is threaten soil and water resources. soil properties are main parameters to affect runoff and soil erosion processes. so, this study was conducted to investigate the effects of some soil properties on runoff and soil erosion in the forest lands located in vicinity of sari city. rainfall simulator was set in 15 ran...

Journal: :Environmental Modelling and Software 2007
V. Polyakov A. Fares D. Kubo J. Jacobi C. Smith

Impaired water quality caused by human activity and the spread of invasive plant and animal species has been identified as a major factor of degradation of coastal ecosystems in the tropics. The main goal of this study was to evaluate the performance of AnnAGNPS (Annualized NonPoint Source Pollution Model), in simulating runoff and soil erosion in a 48 km watershed located on the Island of Kaua...

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During the construction of road networks large area of forests and rangelands will be destroyed in the road path and its margins. This process causes massive amount of soil and rock move from its site and on adjacent lands will be accumulated, that causes increasing environmental degradation. One of the most important problems due to forest roads making is increasing of different erosion forms ...

ژورنال: علوم آب و خاک 2015
دستورانی, محمد تقی , سلطانی, محبوبه , سوزنده پور, سیده فاطمه , طالبی, علی , کریمیان, علی‌اکبر ,

Land use is one of the basic factors for controlling the hydrologic behavior of watersheds. Therefore, it is generally assumed that land use change is the cause of variation in hydrological dynamic of watersheds. In this paper, the land use effect in present and optimum conditions on sedimentation of watershed was studied using GIS and applying the HEC-HM model in Shoor-Shirin watershed in Fars...

2010
Paul D. Komar

KOMAR, P.D., 2010. Shoreline evolution and management of Hawke’s Bay, New Zealand: tectonics, coastal processes, and human impacts. Journal of Coastal Research, 26(1), 143–156. West Palm Beach (Florida), ISSN 0749-0208. The evolution of the coast of Hawke’s Bay, New Zealand, and its erosion problems have been governed by multiple factors, including its tectonic setting with an earthquake in 193...

One of the important parameters, that reduce negative influence of the other known parameters, is cover vegetation. In this study were estimated cover vegetation influence in soil erosion of Razin basin in Kermanshah province that is our study area. The first step is preparation map of NDVI obtained & category of cover vegetation by the Landsat TM data. Then Revised Universal Soil Loss Equation...

Requisite programs soil conservation and sediment control is requires identification of areas prone to erosion and today used fingerprinting method around the world to determine the contribution of sediments transported. In this study, in order to gain optimized share of the estimated sediment resources, used of tracking feature and finally presented the map susceptibility to erosion in the Fas...

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