Volume 38 (2024)
Volume 37 (2023)
Volume 36 (2022)
Volume 35 (2021)
Volume 34 (2020)
Volume 33 (2019)
Volume 32 (2018)
Volume 30 (2016)
Volume 29 (2015)
Volume 28 (2014)
Volume 27 (2013)
Volume 26 (2012)
Volume 25 (2011)
Volume 24 (2010)
Volume 23 (2009)
Volume 22 (2008)
Research Article
Effect of Source and Amount of Nitrogen, the Amount of Calcium Carbonate of Soil and Different Amounts of Alfalfa Residue on Nitrogen Losses as Ammonia

tahereh mansouri; Ahmad Golchin; Zahra Rezaei

Volume 31, Issue 1 , March and April 2017, Pages 286-301


  Introduction: Selecting the right source of nutrient in a particular cropping situation requires a consideration of economic, environmental, and social objectives. One of the objectives is to keep all nutrient losses to a minimum. Since the use of nitrogen chemical fertilizers began more than 100 years ...  Read More

Research Article
2- Allred B.W., and Snyder K.A. 2008. Ecophysiological responses of Chihuahuan desert grasses to fire. Journal of Arid Environments, 72 (11):1989-1996. 3- Bento-Gonçalves A., Vieira A., Úbeda X., and Martin D. 2012. Fire and soils: Key concepts and recent

H. Taefi; Reza Erfanzadeh; M. Abedi

Volume 31, Issue 1 , March and April 2017, Pages 302-311


  Introduction: Amongst different habitats, fire is an ecological factor and determinant that affects many physico-chemical soil factors. In addition, among natural disturbances, fire plays an important role in plant diversity conservation and in some areas around the world, the presence of some plant ...  Read More

Research Article
The Occurrence of Early Autumn Frost Frequency Analysis Case Study: Khorasan Razavi’s Synoptic Stations

nafise seyednezhad; mahboobeh farzandi; H. Rezaee-Pazhand

Volume 31, Issue 1 , March and April 2017, Pages 312-320


  Introduction: The analysis of extreme events such as first frost dates are detrimental phenomena which influence in various branches of engineering, such as agriculture. The analysis and probability predicting of these events can decrease damage of agriculture, horticulture and the others. Furthermore, ...  Read More

Research Article
Calibration and Evaluation of Different Estimation Models of Daily Solar Radiation in Seasonally and Annual Time Steps in Shiraz Region

Hamid Reza Fooladmand; Farzaneh Karimi

Volume 31, Issue 1 , March and April 2017, Pages 321-330


  Introduction: Solar radiation on the earth surface has a wide range of applications in hydrology, agriculture and meteorology. Solar radiation is an important parameter of estimated models of reference crop potential evapotranspiration such as the Penman–Monteith equation. Also, total sunshine hours ...  Read More

Research Article
The Effect of Different Approaches of Distance Between Two Sets on Fractal Downscaling of Temperature in Mashhad

shima tajabadi; Bijan Ghahraman; Ali Naghi Ziaei

Volume 31, Issue 1 , March and April 2017, Pages 331-344


  Introduction: The range of meteorological parameters, such as temperature, are different at different scales. Fractal geometry is a branch of mathematics that has many applications in the field of discrete and continuous domains. Downscaling may be done by different methods, including univariate, multivariate ...  Read More

Research Article
Simulation of Soil Water content and Nitrate under Different Fertigation Strategies for Sweet Pepper in Isfahan by EU-ROTATE-N Model.

forough fazel; Naser Ganji Khorramdel; mahdi Gheysari

Volume 31, Issue 1 , March and April 2017, Pages 263-276


  Introduction: World's population growth and limited water resources and needing to more food production led to interest farmers to use nitrogen fertilizer more than soil requires and subsequently Nitrate leaching causes groundwater and environmental pollution. Therefore, researches has concentrated ...  Read More

Research Article
Comparison of Four Weighting Methods in Fuzzy-based Land Suitability to Predict Wheat Yield

Fatemeh Rahmati; Ardavan Kamali

Volume 31, Issue 1 , March and April 2017, Pages 277-285


  Introduction: Land suitability evaluation is a process to examine the degree of land fitness for specific utilization and also makes it possible to estimate land productivity potential. In 1976, FAO provided a general framework for land suitability classification. It has not been proposed a specific ...  Read More

Research Article
Cadmium Immobilization in Soil using Sodium Dodecyl Sulfate Stabilized Magnetite Nanoparticles

Ahmad Farrokhian Firouzi; Mohammad javad Amiri; Hosein Hamidifar; Mehdi Bahrami

Volume 31, Issue 1 , March and April 2017, Pages 241-253


  Introduction Some methods of contaminated soils remediation reduces the mobile fraction of trace elements, which could contaminate groundwater or be taken up by soil organisms. Cadmium (Cd) as a heavy metal has received much attention in the past few decades due to its potential toxic impact on soil ...  Read More

Research Article
Study of Viability of Phosphate Solubilizing Bacteria in Phosphate granules

hajar rajabi; A. Fallah Nosrat Abad; Gholamreza bakhshi Khaniki

Volume 31, Issue 1 , March and April 2017, Pages 254-262


  Introduction: sustainable development and the environment are interconnected. Sustainable agriculture is continuous utilization of a farm with respect to various aspects of environmental conditions by using fewer inputs (other than Bio-fertilizers). Phosphorus is one of the essential elements for the ...  Read More

Research Article
Particle Size Distribution of Surface-Eroded Soil in Different Rainfall Intensities and Slope Gradients

Ali Reza Vaezi; Mahdi Ebadi

Volume 31, Issue 1 , March and April 2017, Pages 216-229


  Introduction: Soil water erosion on the slope lands involves detachment, transport and deposition of soil materials due to erosive forces of raindrops and surface runoff. Surface runoff can produce relatively high soil loss and is often the dominant hillslope erosion process. The rate of surface runoff ...  Read More

Research Article
Comparing the Ability of Conventional and Digital Soil Maps to Explain Soil Variability using Diversity Indices

zohreh mosleh; mohammad hassan salehi; azam jafari; Isa Esfandiarpoor Borujeni

Volume 31, Issue 1 , March and April 2017, Pages 230-240


  Introduction: Effective and sustainable soil management requires knowledge about the spatial patterns of soil variation and soil surveys are important and useful sources of data that can be used. Prior knowledge about the spatial distribution of the soils is the first essential step for this aim but ...  Read More

Research Article
The Effect of Aggregate-Size Fractions on the Availability of Cu in Some Contaminated Soils with Heavy Metals

Akram Farshadirad; Alireza Hosseinpour; Shojae ghorbani; hamidreza motaghian

Volume 31, Issue 1 , March and April 2017, Pages 192-201


  Introduction: In recent years, because of the presence of industrial factories around the Isfahan province of Iran and high concentrations of heavy metals in the vicinity of them, and the gradual accumulation of heavy metals from various sources of pollution in urban areas over time, including gasoline ...  Read More

Research Article
he Role of Aspect on Spatial Variability of Soil Properties and Quantitative, Qualitative, and Vegetative Properties of Peach in Saman Region, Shahrekord

nargess keyvani; Mohammad hasan Salehi; jahangard mohammadi; Abdolrahman Mohammadkhani

Volume 31, Issue 1 , March and April 2017, Pages 202-215


  Introduction: Soils form from the interplay of five main factors namely parent material, time, climate, relief (topography) and organisms. Topography is one of the local factors that has direct and indirect effects on soil formation, physical and chemical properties of soils. To understand the mutual ...  Read More

Research Article
Assessing earthworm and sewage sludge impacts on microbiological and biochemical soil quality using multivariate analysis

Hanye Jafari Vafa; Fayez Raiesi

Volume 31, Issue 1 , March and April 2017, Pages 168-178


  Introduction: Land application of organic wastes and biosolids such as municipal sewage sludge has been an important and attractive practice for improving different properties of agricultural soils with low organic matter content in semi-arid regions, due to an increase of soil organic matter level and ...  Read More

Research Article
Modeling Adsorption Kinetics of Magnesium and Phosphate Ions on Goethite by Empirical Equations

Malihe Talebi Atouei; Rasoul Rahnemaie; Esmaiel Goli Kalanpa; Mohammad Hossein davoodi

Volume 31, Issue 1 , March and April 2017, Pages 179-191


  Introduction: Natural environments, including soils and sediments, are open and complex systems in which physico-chemical reactions are in semi equilibrium state. In these systems, bioavailability of plant nutrients, like phosphate, is influenced by environmental conditions and concentrations of other ...  Read More

Research Article
Influence of Plant Growth Regulators and Humic Substance on the Phytoremediation of Nickel in a Ni-Polluted Soil

Mahshid Shafigh; reza ghasemi; abdolmajid ronaghi

Volume 31, Issue 1 , March and April 2017, Pages 144-155


  Introduction: Plants can uptake, bioaccumulate and immobilize different metals in their tissues. Phytoremediation technique has been used to remove hazardous substances including heavy metals from the environment. Assisted phytoremediation is usually the process of applying a chemical additive to heavy ...  Read More

Research Article
Comparison the Efficiency of Aquasorb and Accepta Superabsorbent Polymers in Improving Physical, Chemical, and Biological Properties of Soil and Tomato Turnover under Greenhouse Condition

mehdi nourzadeh haddad; Akbar hasani; mehdi karami mighadam

Volume 31, Issue 1 , March and April 2017, Pages 156-167


  Introduction: Water shortage in arid and semiarid regions is the most serious factor in limiting agricultural activities as it leads to the rapid reduction of yields from both a quantitative and qualitative perspective. Under conditions of water scarcity, leaf temperature rises, which causes plant wilting ...  Read More

Research Article
Estimating Major Crop Water Productivity at Neyshabour Basin and Optimize Crop Area

Yavar Pourmohamad; Mohammad Mousavi baygi; Amin Alizadeh; Alinaghi Ziaei; Mohammad Bannayan

Volume 31, Issue 1 , March and April 2017, Pages 112-126


  Introductionin current situation when world is facing massive population, producing enough food and adequate income for people is a big challenge specifically for governors. This challenge gets even harder in recent decades, due to global population growth which was projected to increase to 7.8 billion ...  Read More

Research Article
Simulating Effects of Long Term Use of Wastewater on Farmers Health Using System Dynamics Modeling (Case Study: Varamin Plain)

Hamzehali Alizadeh; Abdolmajid Liaghat; Taymour Sohrabi molayouef

Volume 31, Issue 1 , March and April 2017, Pages 127-143


  Introduction: Agricultural activity in Varamin plain has been faced with many challenges in recent years, due to vicinity to Tehran the capital of Iran (competition for Latian dam reservoir), and competition with Tehran south network in allocation of Mamlou dam reservoir and treated wastewater of south ...  Read More

Research Article
Modeling and Forecast Biological Oxygen Demand (BOD) using Combination Support Vector Machine with Wavelet Transform

Abazar Solgi; Amir Pourhaghi; Heidar Zarei; Hadi Ansari

Volume 31, Issue 1 , March and April 2017, Pages 86-100


  Introduction: Chemical pollution of surface water is one of the serious issues that threaten the quality of water. This would be more important when the surface waters used for human drinking supply. One of the key parameters used to measure water pollution is BOD. Because many variables affect the water ...  Read More

Research Article
Experimental Investigation on the Scour Hole Geometric Dimensions in Different Spur Dikes in 90 Degree Bend for Non-Submerged Conditions

somayeh rahimi; mahmood kashefipoor; mahmoud shafai bajestan; ahmad fathi

Volume 31, Issue 1 , March and April 2017, Pages 101-111


  Introduction: Outer bank region is always exposed to destruction and scour due to secondary flow. Different methods are generally used to protect the outer bank. One of the most common and economical ways is spur dike. As an obstacle in the flow, spur dikes protect the outer bank through decreasing the ...  Read More

Research Article
Application of Chaos Theory and Artificial Neural Networks to Evaluate Evaporation from Lake's Water Surface

Saeed Farzin; Reza Hajiabadi; Mohammad Hossein Ahmadi

Volume 31, Issue 1 , March and April 2017, Pages 61-74


  Introduction: Dynamic nature of hydrological phenomena and the limited availability of appropriate mathematical tools caused the most previous studies in this field led to the random and the probabilistic approach. So selection the best model for evaluation of these phenomena is essential and complex. ...  Read More

Research Article
Effect of Rock Fragment Cover on Hydraulics Properties of Surface Flows and Rill Initiation with Simulating Runoff under Natural Conditions

sara kalbali; Shoja Ghorbani-Dashtaki; Mahdi Naderi; Salman Mirzaee

Volume 31, Issue 1 , March and April 2017, Pages 75-85


  Introduction: Rock fragments on soil surfaces can also have several contrasting effects on the hydraulics of overland flow and soil erosion processes. Many investigators have found that a cover of rock fragments on a soil surface can decrease its erosion potential compared to bare soil surface (1, 12 ...  Read More

Research Article
Identify the Effective Wells in Determination of Groundwater Depth in Urmia Plain Using Principle Component Analysis

Sahar Babaei Hessar; Qasem Hamdami; Hoda Ghasemieh

Volume 31, Issue 1 , March and April 2017, Pages 40-50


  Introduction: Groundwater is the most important resource of providing sanitary water for potable and household consumption. So continuous monitoring of groundwater level will play an important role in water resource management. But because of the large amount of information, evaluation of water table ...  Read More

Research Article
The Effect of Different Levels of Irrigation and Nitrogen Fertilizer on Yield and Water Use Efficiency of Potato in Subsurface Drip Irrigation

Mohammad Jolaini; mohammad karimi

Volume 31, Issue 1 , March and April 2017, Pages 51-60


  Introduction: After wheat, rice and corn, potato is the fourth most important food plant in the world. In comparison with other species, potato is very sensitive to water stress because of its shallow root system: approximately 85% of the root length is concentrated in the upper 0.3-0.4 m of the soil. ...  Read More

Research Article
Large Dam Effects on Flow Regime and Hydraulic Parameters of river (Case study: Karkheh River, Downstream of Reservoir Dam)

Farhang Azarang; Abdolrasoul Telvari; Hossein Sedghi; Mahmoud Shafai Bajestan

Volume 31, Issue 1 , March and April 2017, Pages 11-27


  Introduction: The critical role of the rivers in supplying water for various needs of life has led to engineering identification of the hydraulic regime and flow condition of the rivers. Hydraulic structures such dams have inevitable effects on their downstream that should be well investigated. The ...  Read More

Research Article
Alluvial streams; Bed forms; Reducing width transitions; Ripple height.

Elham Roshani; ali hossienzade dalir; Davoud Farsadi; farzin salmasi

Volume 31, Issue 1 , March and April 2017, Pages 28-39


  Introduction: In alluvial streams, water flow affects the sediment and transports them to the downstream constantly. In the meantime, bed forms will be created on stream bed with various dimensions and in different conditions. In this paper experiments have been done to study the influences of width ...  Read More

Research Article
Optimization of Water Allocation between Different Crops in Water Stress Conditions in Qazvin Irrigation Network

Mehdi Mohammad khani; mohammad karimi; afshin Gomrokchi

Volume 31, Issue 1 , March and April 2017, Pages 1-10


  Introduction: Evaluations show the necessity of using optimization models in order to determine optimal allocation of water in different water conditions. Its use can be proposed according to developed model abilities in this study in order to optimize water productivity and provide sustainable management ...  Read More