@article{ author = {hoseinzadeh, mohammad mehdi}, title = {Estimated height and peak runoff rate in a stream erosion in Kojoor region Nowshahr – North Alborz}, abstract ={Flooding is a natural hazard events and Survey data from the annual losses due to flood in Iran and the world show the extent of the flood damage caused on natural and human resources. To estimate height of the runoff and discharge maximum in basins and stream erosion, there are various experimental methods and mathematical models that one of these models, SCS model is. Thus, the aim of this study was to estimate the Runoff coefficient and Maximum discharge by Curve Number method with different units forming the Fyruzkla Kojoor basin and zoning maps of potential runoff and stream erosion in the drainage basin is. After mapping the watershed CN and S, to calculate the volume of runoff produced in the region, short-term rainfall for different return periods were calculated using Pearson distribution of type III. According to the map of potential runoff in the basin, forest land has the lowest runoff potential and pasture lands have the greatest potential to generate runoff and erosion is occurring and also has the lowest penetration. The middle part of the basin, the most prone to runoff and erosion and gully formation in the region are. After determining the height of the basin surface runoff, peak discharge was calculated for various hydrological. The highest values of maximum flow rate are based on rangeland with hydrologic group D.}, Keywords = {Flood, Curve number, Runoff, Kojoor, Peak flow, Stream erosion }, volume = {2}, Number = {3}, pages = {1-15}, publisher = {University of Hormozgan}, url = {http://magazine.hormozgan.ac.ir/article-1-108-en.html}, eprint = {http://magazine.hormozgan.ac.ir/article-1-108-en.pdf}, journal = {Environmental Erosion Research Journal}, issn = {2251-7812}, eissn = {2717-3968}, year = {2012} } @article{ author = {}, title = {Assessment of formations erodibility through reagent alluvial sediments morphoscopy (Case study: Sajjadrud basin)}, abstract ={Erodibility of basin formations is depends on their resistance versus of erosion. In a basin are not the same stones, their resistance and covering area. Obviously, formations sensitivity versus of erosion are determining rate of sediment production in a river. In this research has been analysis formation erodibility versus of erosion in the Sajjadrud basin. Research methods are descriptive–analytical and based on field and library methods. In order to determination of formation sensitivity versus of erosion, initially from downstream and around output of basin, were taken 20 samples with selected-randomly method. The samples after of preparing in the laboratory with morphoscopic and morphometric methods based on kind of stone have been separated to seven main groups. Then basin was delimited using of digital topographical map with scale of 1: 50000 and geological map with scale of 1: 100000 and also Landsat satellite image, then covering extent by each formation has been identified and survey. In the next stage separated samples of sediments has been adapted with maps. In this regard, according to adaptation homogeneous area, has been determined erodibility of stones each any group and area. Then has been transferred extent any area on the map with Arc GIS software. Results shows that erodibility in formation that their kind is limestone and sandstone, have maximum amount and shows volume of degradation in the basin. Lar and Shemshak formations have the largest percentage of limestone and sandstone therefore are the most erodibility formations in the basin. Also, shale and silt stone, respectively have less erodibility in the basin.}, Keywords = {Erodibility, Originating, Alluvial Sediments, Sediment Productive, Sajjadrud Basin.}, volume = {2}, Number = {3}, pages = {17-28}, publisher = {University of Hormozgan}, url = {http://magazine.hormozgan.ac.ir/article-1-110-en.html}, eprint = {http://magazine.hormozgan.ac.ir/article-1-110-en.pdf}, journal = {Environmental Erosion Research Journal}, issn = {2251-7812}, eissn = {2717-3968}, year = {2012} } @article{ author = {sepahvand, alireza and hezarkhani, najmeye}, title = {Comprising the Empirical Equations of Runoff- Sediment Resulted from Sediment Rating Curves and Artificial Neural Network (Case Study: Ghadarkhosh Watershed, Ilam Province)}, abstract ={Being available the accurate data on carried sediment has accounted as an important factor for making decision about constructing of river structures and determining of dam life. To accomplish this object, a number methods have been proposed so that sediment rate curving as a hydrological method has been developed for doing it. Ignoring differences between season;#39s values causes to lower the precision of this method. So, present research has been programmed for evaluation of classified discharge to two categories including high water and low water on suspended sediment calculated by sediment rating curve in comparison with Artificial Neural Network (ANN). For acquiring this object, by means of flow duration curve and USBR method, daily suspended sediment and sediment rating curve were resulted. Finally, some statistical criteria including Relative Error (RE), Model Efficiency (EF), Root Mean Square Error (RMSE) and Descriptive Coefficient (R2) were applied for comparing the results outcome of sediment rating curve method and ANN method. Results showed that ANN method has as higher capability in comparison with sediment rating curve on basis of Descriptive Coefficient and Model Efficiency 0/903 and 0/89 respectively moreover Root Mean Square Error and Relative Error 0/322 and 6/22 respectively.}, Keywords = {USBR, ANN, Sediment Rating Curve, Flow Duration Curve, High and Low Water Periods}, volume = {2}, Number = {3}, pages = {29-43}, publisher = {University of Hormozgan}, url = {http://magazine.hormozgan.ac.ir/article-1-112-en.html}, eprint = {http://magazine.hormozgan.ac.ir/article-1-112-en.pdf}, journal = {Environmental Erosion Research Journal}, issn = {2251-7812}, eissn = {2717-3968}, year = {2012} } @article{ author = {seyedalipour, mohammad hosein and alizadeh, mohsen and feiznia, sadat and ahmadi, hassan and zare, mohammadrez}, title = {Selection of Appropriate Conversion Model for 137CS Method in Erosion and Sediment Studies In Loess Deposits in North-East of Iran}, abstract ={Soil erosion is one of the effective elements on soil destruction. Many empirical and theoretical models has been developed for soil erosion estimation 137 Cs technique is used as new and accurate method in this case across world. For applying this technique on computing erosion and sediment rate, an appropriate conversion model should be selected. For this propose in this study proportional, mass balance I and mass balance II were used in cultivated soils, also in uncultivated soils  profile distribution and diffusion ad migration were used. The result shows that in cultivated soils mass balance I has the highest estimation, whereas in uncultivated soils profile distribution estimate this rate more than diffusion and migration model. While the SDR estimation by all three models are similar in cultivated soils, this result is not the same at uncultivated soils, but the models results indicate 16% difference. In general proportional model and distribution profile model are preferred for following reasons: less coefficient of variation (CV), less parameters needed, and similar SDR estimation with other models.}, Keywords = {Soil Erosion, 137 Cs Technique, Conversion Model, Loess Deposit, Maraveh-Tappeh}, volume = {2}, Number = {3}, pages = {44-57}, publisher = {University of Hormozgan}, url = {http://magazine.hormozgan.ac.ir/article-1-113-en.html}, eprint = {http://magazine.hormozgan.ac.ir/article-1-113-en.pdf}, journal = {Environmental Erosion Research Journal}, issn = {2251-7812}, eissn = {2717-3968}, year = {2012} } @article{ author = {}, title = {Morphogenesis and Morph anthropic Agent Analyses on Creation and evolution of Alluvial fans (Case study: Katoeh, Rigabad and Chenar Alluvial fans- Darab Faultic Valley)}, abstract ={Darab Plain is among region that in there formed several alluvial fans because presence of situation and climate change, and can mention to Katoeh, Rigabad and Chenar alluvial fans. In this research is tried to using of Geology and Topographic Maps, Arial Image ana Field survey analysis are discussed  Factors affecting the establishment and evolution of this alluvial fans. Result showed that Katoe and Chenar Rivers have high pure force because sharp steep of bed and increase of velocity, and is Prevailing practice of digging the river bed because excess of force that was transfers the downstream materials from erosion. This agent was caused formation of case study alluvial fans. Alluvial fans morphology of Katoe and Chenar has the unique feature. because deposition act don’t in an open space by Katoe and Chenar rivers, but was limited the left side of katoe alluvial fan by Noro mountain and right side of Chenar alluvial fan with Barfdan Mountain. Also human disarranged natural order of case study alluvial fans evolution with creation of artificial embankments, and sand removal}, Keywords = { Geomorphology, Alluvial fan, Morphogenesis and Morph anthropic, Darab Plain, Katoe and Chenar Rivers.}, volume = {2}, Number = {3}, pages = {58-73}, publisher = {University of Hormozgan}, url = {http://magazine.hormozgan.ac.ir/article-1-114-en.html}, eprint = {http://magazine.hormozgan.ac.ir/article-1-114-en.pdf}, journal = {Environmental Erosion Research Journal}, issn = {2251-7812}, eissn = {2717-3968}, year = {2012} } @article{ author = {morovvatisharifabadi, abolfazl and pazira, ebrahim and masih-abadi, mohammad hosein and ekhtesasi, mohammad reza and alavvi-panah, kazem}, title = {The Effect of reclamation of salt affected lands to Cropland on soil quality indicators}, abstract ={In this study the effects of land use change from salt affected land to cropland on soil quality indicators were studied in Chahafzal region, Yazd province, central Iran. Composite soil samples from 0-30 and 30-60 cm depths of saline and cultivated land were taken. Soil particle size distribution, calcium carbonate, Available water capacity (AWC), Electrical conductivity (ECe), Soil reaction (pH), Sodium adsorption ratio (SAR) and concentration of soluble ions were determined. Results showed that land use changes from saline to arable lands resulted in a significant reduction of sand, ECe, pH and SAR due to land use changes in region studied. The silt, clay and AWC Increased due to land use changes. The amount of calcium carbonate in both soil depths did not change substantially. Overall, it is concluded that a change in land use from salt affected land to croplands with widespread agricultural practices, specifically intensive tillage activities, may lead to enhanced physical and chemical properties of soil, which could result in increased soil quality.}, Keywords = {Land use change, Soil quality, Salt affected land, Chahafzal, Ardakan}, volume = {2}, Number = {3}, pages = {74-84}, publisher = {University of Hormozgan}, url = {http://magazine.hormozgan.ac.ir/article-1-115-en.html}, eprint = {http://magazine.hormozgan.ac.ir/article-1-115-en.pdf}, journal = {Environmental Erosion Research Journal}, issn = {2251-7812}, eissn = {2717-3968}, year = {2012} } @article{ author = {}, title = {Evaluation of soil erosion by TOPSIS and SLEMSA method (Case study: Romeshgan, Iran)}, abstract ={The present study shows that very low erosion class (0.23 to 8 tons per hectare per year) Romeshgan watershed, most of the area to be included in the attrition levels low, medium, large and have too much. In general we can say the area is low to moderate ability erodible. SLEMSA model for estimating erosion, environmental conditions are examined. These factors in watershed erosion rates in different influence, its role in the model represent different values. Overlapping layers, rainfall, slope classes, geology, the land user, land type and Revealed that the maximum rate of erosion in areas with average precipitation of 600 mm, a range of plains and mountains of the terrace deposits and alluvial fans new and old, marl, limestone, siltstone, sandstone, conglomerate, and gypsum contains be. The slope factor, too, lands with slopes of 25 to 45 percent are devoted to the highest degree of erosion. Results using TOPSIS model in the survey also shows that factor eroding Romeshgan basin topography (slope) over other factors, basin was effective in erodible and has a major role. This model is also based on 1 sub basins in the north basin (with the highest similarity to the positive ideal), have the greatest vulnerability to erosion, then the sub basins 2, 4 and 3 are located. The reason for this can be achieved over all the heights and slopes of the basins is below. Looking at the situation of erosion and geomorphologic factors in the basin, we knew that the geomorphologic unit surface area plain, erosion of geological factors (alluvial deposits, marl, gypsum, shale, etc.) and land and units geomorphologic other variables in the same mountain slope, geology and rainfall is higher. Given the importance of the erosion zone and listed the conditions subject to wear and perform the necessary actions to protect resources and prevent soil erosion and loss it is necessary.}, Keywords = {Erosion, Methods SLEMSA, Model, TOPSIS, Romeshgan Basin}, volume = {2}, Number = {3}, pages = {85-96}, publisher = {University of Hormozgan}, url = {http://magazine.hormozgan.ac.ir/article-1-118-en.html}, eprint = {http://magazine.hormozgan.ac.ir/article-1-118-en.pdf}, journal = {Environmental Erosion Research Journal}, issn = {2251-7812}, eissn = {2717-3968}, year = {2012} }