Volume 38 (2024)
Volume 37 (2023)
Volume 36 (2022)
Volume 35 (2021)
Volume 34 (2020)
Volume 33 (2019)
Volume 32 (2018)
Volume 31 (2017)
Volume 30 (2016)
Volume 29 (2015)
Volume 27 (2013)
Volume 26 (2012)
Volume 25 (2011)
Volume 24 (2010)
Volume 23 (2009)
Volume 22 (2008)
Research Article
Optimal Interpolation of Daily Rainfall Equations with Fuzzy Theory and Genetic Algorithms in Mashhad Plain Basin

nafise seyednezhad; Seied Hosein Sanaei-Nejad; B. Ghahraman; H. Rezaee Pazhand

Volume 28, Issue 1 , March and April 2014, Pages 1-9


  Regional analysis, estimating missing values, areal rainfall, estimating PMP and rainfall- runoff models in daily scale are essential in water resources and climatological researches. Modified inverse distance interpolation method based on Fuzzy Mathematics (MIDW-F) is a new, efficient method and independent ...  Read More

Research Article
Qualitative and Economical Land Suitability Evaluation for Important Field Crops in Shahrekord Area, Using ALES Program

J. Givi

Volume 28, Issue 1 , March and April 2014, Pages 10-21


  In addition to qualitative and quantitative land suitability evaluation, economical evaluation can be carried out as well, based on net or gross benefit per surface area unit. The present research was done to evaluate land suitability, qualitatively and economically,, by different methods for irrigated ...  Read More

Research Article
Convergence Rate Improvement in Water Distribution Network Optimization Using Fast Messy Genetic Algorithm (FMGA)

A. Moghaddam; A. Alizadeh; Alinaghi Ziaei; A. Farid Hosseini; D. Fallah Heravi

Volume 28, Issue 1 , March and April 2014, Pages 22-34


  Genetic Algorithm as a one of the main evolutionary algorithms has had a most successful role in the water distribution network optimization.This algorithmhas been undergoing many reforms and improved versions are published. A type of genetic algorithms is Fast Messy Genetic Algorithm (FMGA), that has ...  Read More

Research Article
Experimental Study on Hydraulic Characteristics of Porous Bottom Intake in Clear Water

S. Pouresmaeil; M.F. Maghrebi

Volume 28, Issue 1 , March and April 2014, Pages 35-45


  Bottom intakes are hydraulic structures widely adopted for diverting water in steep rivers. The problems of vibration, corrosion, deformity, and clogging of the bottom racks by sediment, freezing and foliage inspire a new system of bottom intake in which a filled trench of porous media replaces the bottom ...  Read More

Research Article
The Investigation of Mashhad Extremum Temperature in Different Scales

Sh. Shams; Mohammad Mousavi baygi

Volume 28, Issue 1 , March and April 2014, Pages 46-60


  Mashhad is Iran second most populous city, where in terms of tourism, economy and agriculture is very important. Regarding to the importance of the change of climatic factors and its effect on future policy, in this study the max and minimum temperature changes in the scale of yearly, seasonally, monthly ...  Read More

Research Article
Application of Multi-Grid Method for Solving System of Linear Equations in Hydraulic Analysis of Pipe Networks

N. Moosavian; M.R. Jaefarzadeh

Volume 28, Issue 1 , March and April 2014, Pages 61-71


  The gradient-based algorithms are widely used for hydraulic analysis of pipe networks. Solving system of linear equations has the most computational cost in the gradient-based methods particularly for large networks with more than hundreds of variables. The Jacobian matrix form in the gradient-based ...  Read More

Research Article
Calculation and Zoning of Evapotranspiration using SEBAL method In the West of Iran (Miandarband Plain)

seyed vahidodin rezvani

Volume 28, Issue 1 , March and April 2014, Pages 72-81


  Today, remote sensing is used in various sciences, such as: geography, biology, meteorology, agriculture, water resources management and etc. Easy and inexpensive data access and data precision, digital and extensive and comprehensive of images that having the frequency spectrum, are some advantages ...  Read More

Research Article
Evaluation of DSSAT 4.5-CSM-CERES-Wheat to Simulate Growth and Development, Yield and Phenology Stages of Wheat under Water Deficit Condition (Case Study: Ahvaz Region)

Mahdi Delghandi; Saeid Boroomand Nasab

Volume 28, Issue 1 , March and April 2014, Pages 82-91


  Field experiments for quantifying optimal breeding strategies are time-consuming and expensive. Crop simulation models can provide an alternative, less time-consuming and inexpensive means of determining the optimum breeding strategies. These models consider the complex interactions between weather, ...  Read More

Research Article
Effects of NaCl Salinity Levels on the Glomalin Produced by Glomerales in Symbiosis with Corn Plant

samaneh ahmadi gheshlaghi

Volume 28, Issue 1 , March and April 2014, Pages 92-100


  Glomalin is a glycoprotein produced by arbuscular mycorrhizal (AM) fungi, and is a major component of soil organic matter, which plays an important role in soil aggregation and carbon sequestration. Glomalin is produced only by the AM fungi. On the other hand, stressful environments such as salinity ...  Read More

Research Article
Distribution and Characteristics of Loess Deposits of Sarakhs Area

Ali reza Karimi

Volume 28, Issue 1 , March and April 2014, Pages 101-110


  Loess deposits of Kopeh Dagh area usually occur patchy, with low thickness and should be identified and differentiated from other deposits for environmental planning and landscape evolution studies. The objective of this study was to identify distribution and determine the characteristics of loess deposits ...  Read More

Research Article
Efficiency Study of the system dynamics model to simulate the rainfall – runoff (Case Study:Lighvan Watershed)

yaghoub dinpazhoh; sabereh darbandi

Volume 28, Issue 1 , March and April 2014, Pages 127-138


  Limited of water resources and the sustainable management, has made it impossible water supply of all needs, therefore, in order to supply water are required careful planning with high reliability. For this reason, is more than ever before the importance of water management in the catchment basin. In ...  Read More

Research Article
The effect of textural groups on the fitting capability of soil particle size distribution curve models
Volume 28, Issue 1 , March and April 2014, Pages 111-126


  The important step in using the soil particle size distribution (PSD) to predict soil moisture characteristic curve is the determination of accurate and continuous curve for PSD. Many models have been introduced to describe PSD curve and fitting to the experimental data, but their fitting capability ...  Read More

Research Article
Land Suitability Evaluation for Cultivation of Wheat, Based on The FAO Model and Fuzzy-AHP-OWA Technique in GIS Environment (Case Study: Miyaneh County)

Mohammad Taleai

Volume 28, Issue 1 , March and April 2014, Pages 139-156


  According to predictions, due to population increase and income growth, demand for food will continue to rise by over 3% annually. Wheat with providing over 33% of global world foods is one of the main sources for food security and meeting the needs of increased population. Land suitability assessment ...  Read More

Research Article
The Role of Trichoderma harzianum in Cadmium Biosorption of Barley (Hordeum vulgare L.) in a Contaminated Soil

Hemmatollah Pirdashti

Volume 28, Issue 1 , March and April 2014, Pages 157-165


  Soil pollution by heavy metals due to industrial activities, factories, fertilizers and pesticides is an environmental problem which threatens public health. Therefore, it is necessary to find some solutions to ameliorate the negative effects of heavy metals in soil. Accordingly, an experiment was designed ...  Read More

Research Article
Liming Treatment Effect on Vermicomposting Process of Different Combination of Restaurant Wastes and Cow Dung

Behrooz Azimzadeh; mohammad ali bahmanyar

Volume 28, Issue 1 , March and April 2014, Pages 166-178


  With rising urbanization and change in lifestyle and food habits, the amount of waste material has been increasing rapidly and its composition changing. Vermicomposting is the best method of converting waste material into a useable soil amendment with the use of earthworms and microorganisms. The study ...  Read More

Research Article
Evaluation of HYDRUS-2D and SEEP/W Models to Estimate Wetting Front for Surface and Subsurface Gravity Drip Irrigation

Mohammad Ghorbanian

Volume 28, Issue 1 , March and April 2014, Pages 179-189


  Many numerical and analytical models have been developed for estimation of soil water distribution in order to increase water use efficiency in drip irrigation. Accurate solution of well-known soil water equation, Richard’s equation, in these models cause more accurate estimation of soil wetting front. ...  Read More

Research Article
The Effect of Sampling Density on the Accuracy of Estimation for Some of Soil Properties in Shahrekord Plain

nargess hoseinzadeh; Mohammad hasan Salehi; jahangard mohammadi

Volume 28, Issue 1 , March and April 2014, Pages 190-202


  Now a day, performing soil surveys by minimum time and budget as well as enough accuracy is one of the soil scientists' interests. The present study was investigated to study the effect of sampling density on statistical and geostatistical accuracy of estimation for some of soil properties in Shahrekord ...  Read More

Research Article
Variability of Amount and Particle Size Distribution and Morphometric Characteristics of Bed Loads Due to Sand and Gravel Mining

Seyed Hamidreza Sadeghi

Volume 28, Issue 1 , March and April 2014, Pages 203-218


  Awareness of the variety, quality and quantity of sediment transport rates in different time scales, is inevitable for monitoring the hydraulic behavior of channel and flow affected by the mining activities and proper management of sand removal. However, less comprehensive studies have been conducted ...  Read More

Research Article
Investigation and Comparison of Hurst Exponent Estimation Methods in Trend and Seasonality Analysis of Hydro-Climatic Variables in Urmia Lake Bain (Case Study: Aji Chai Sub-basin)

Mohammad ali Ghorbani

Volume 28, Issue 1 , March and April 2014, Pages 219-229


  Time series analysis methods have been detected as important tools for evaluating the issues related to water resources management. Spatial differences in streamflow trends can occur as a result of spatial differences in the changes in rainfall and temperature, spatial differences in the catchment characteristics ...  Read More

Research Article
Studying The Effects of Biological Soil Crusts on Soil Saline-Sodic Properties (Rangeland of Qare Qir, Golestan Province)

jalil kakeh; manoochehr gorji

Volume 28, Issue 1 , March and April 2014, Pages 230-238


  Biological soil crusts (BSCs( result from an intimate association between soil particles and cyanobacteria, algae, fungi, lichens and mosses in different proportions, which live on the surface, or immediately in the uppermost millimeters of soil. Biological soil crusts, are important from the ecological ...  Read More