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 28 (2014)
Volume 26 (2012)
Volume 25 (2011)
Volume 24 (2010)
Volume 23 (2009)
Volume 22 (2008)
Research Article
New Approach for Determining the Length of Potential Growing Season in Iran

B. Alijani; P. Mahmoudi; D.M. Kalim

Volume 27, Issue 5 , November and December 2014, Pages 861-871


  By paying attention to the increasingly development that we observe in accuracy and correctness of short term predictions and also by consideration to the development of tool and instruments and methods of safeguarding plants against frost we can revise about determining length of growing season period. ...  Read More

Research Article
Quantification of Rill Erosion Development in Marl Soils of Zanjanroud Watershed in North west of Zanjan, Iran

A.R. Vaezi; H. Gharehdaghlii

Volume 27, Issue 5 , November and December 2014, Pages 872-881


  Soil erosion prediction models are of great significance for soil and water conservation management. Rill erosion is the most important component of hillslope soil erosion processes. Therefore, predicting hillslope erosion requires that rill erosion is well understood and predictable. The study was conducted ...  Read More

Research Article
Impacts of Land Use Change and Slope Positions on some Soil Properties and Magnetic Susceptibility in Ferydunshahr District, Isfahan Province

M.R. Rahimi Ashjerdi; shamsollah Ayoubi

Volume 27, Issue 5 , November and December 2014, Pages 882-895


  Conversion of forest and pasture lands into agricultural lands, which is triggered by the rapid population growth, causes serious soil degradation, especially in the hilly regions with undulating topography. The objective of this study was to explore the slope position and land use change effects on ...  Read More

Research Article
Modeling and Prediction of Monthly Max & MinTemperatures of Mashhad Plain Using Time Series Models

B. Shabani; M. Mousavi Baygi; Mehdi Jabbari Nooghabi; B. Ghareman

Volume 27, Issue 5 , November and December 2014, Pages 896-906


  Nowadays, modeling and prediction of climatic parameters due to climate change, global warming and the recent droughts is inevitable. Maximum and minimum temperatures are including climatic parameters that are important in water resources management and agriculture. In order to model the maximum and ...  Read More

Research Article
The Statistic Assessment of CMORPH Model Output For Precipitation Estimation Over The Northeast of Iran (Case Study: North Khurasan Province)

A. Mianabadi; A. Alizadeh; Seied Hosein Sanaei-Nejad; M. Bannayan Awal; A. Faridhosseini

Volume 27, Issue 5 , November and December 2014, Pages 919-927


  Precipitation is a key input to different crop and hydrological models. Usually, the rain gauge precipitation data is applied for the most management and researching projects. But because of non-appropriate spatial distribution of rain gauge network, this data does not have a desirable accurate. So estimation ...  Read More

Research Article
Calibration and Uncertainty Analysis of COUP Model for Simulation of Soil Temperature at Hamedan Synoptic Station

Y. Khoshkhoo; parviz irannejad; ali khalili; Hassan Rahimi; A. Liaghat; P. Erik Jansson

Volume 27, Issue 5 , November and December 2014, Pages 928-939


  In this research calibration and uncertainty analysis of COUP model with focus on soil temperature simulation for 3-hours time scale have been performed for Hamedan synoptic station. The Generalized Likelihood Uncertainty Estimation (GLUE) was used for this object. In order to simulate the soil temperature, ...  Read More

Research Article
Effect of Wet-Dry Cycles on the Geotechnical Properties of Stabilized Clayey Soil by Lime and Cement

J. Behmanesh; B. Mohammadnejad

Volume 27, Issue 5 , November and December 2014, Pages 940-948


  In most civil projects, such as irrigation and drainage networks constructions, soil stabilization has an important role. Achieving maximum durability against wet-dry cycles is one of the soil stabilization objects. Therefore, depend upon project type and its importance; various hydraulic binders with ...  Read More

Research Article
The Influence of Earthworm and Arbuscular Mycorrhizal Fungi on Microbial Biomass Carbon and Enzyme Activity in a Soil Contaminated with Cadmium in Sunflower (Helianthus annuus L.) Cultivation

F. Aghababaei; F. Raiesi; alireza hosseinpuor

Volume 27, Issue 5 , November and December 2014, Pages 949-962


  Soil biota such as earthworms and arbuscular mycorrhizal fungi (AMF) play an important role in the stability of ecosystem, and the bioavailability of soil elements, in particular heavy metals, in soils. To examine the effects of these organisms, a 3×2×3 factorial experiment arranged as randomized complete ...  Read More

Research Article
The Impact of Primary Terrain Attributes and Land Cover/Use on Soil Organic Carbon Density in a Region of Northern Iran

S. Falahatkar; S.M. Hosseini; shamsollah Ayoubi; A. Salman Mahiny

Volume 27, Issue 5 , November and December 2014, Pages 963-972


  Land cover/use changes and soil and forest degradation influence on emission of greenhouse gases effectively and lead to global warming. This research was done with objective of investigation of relationships between soil organic carbon density (SOCD) and primary terrain attribute in two depths 0-20 ...  Read More

Research Article
Effect of Salinity and Sewage Sludge on Heavy Metal Availability And Uptake by Barley Plant

A. Falahati Marvast; alireza hosseinpuor; Seyed Hassan Tabatabaei

Volume 27, Issue 5 , November and December 2014, Pages 985-997


  The objective of this study was to evaluate the effect of soil salinity on the availability and uptake of cadmium(Cd), lead(Pb), nickel(Ni), zinc(Zn) and copper(Cu) in a soil treated with municipal sewage sludge (MSS). Soil was salinized (2, 4, 8 and 12 dSm-1 soil paste extract) with NaCl + CaCl2 (1:1ratio), ...  Read More

Research Article
Numerical Modeling of Flow around Bridge Piers in Meandering Channel

D. Houshmand; K. Esmaili; A. Keshavarzi; A. Faridhosseini

Volume 27, Issue 5 , November and December 2014, Pages 973-984


  The existence of bridge pier in streamflow causes a complex 3D flow formation, which also causes the scouring around bridge pier. Since rivers are usually curved, it is necessary to investigate the impact of change in flow patterns caused by passage of flow through the curve on the scouring around bridge ...  Read More

Research Article
Effect of the Red Bean (Phaseolus vulgaris L.) Rhizosphere on the Bioavailability and Fractions of Copper in some Calcareous Soils

H.R. Motaghian; A. Hosseinpour

Volume 27, Issue 5 , November and December 2014, Pages 1009-1022


  Change in microorganism activity and chemical properties can be affect on availability and fractionation of Copper (Cu). This research was conducted to investigate the availability and fractionation of Cu in the bean rhizosphere and bulk soils in 10 calcareous soils using rhizobox at greenhouse. Total ...  Read More

Research Article
Comparison Of Methods To Estimate The Oxygen Diffusion Ratio And Air Permeability By Using The Effective Saturated And Soil Moisture

panah mohamadi

Volume 27, Issue 5 , November and December 2014, Pages 1023-1033


  Gas diffusion ratio in the soil in compare to diffusion in the atmosphere (DP/D0) and air permeability in the soil (Ka) is a function of soil physical characteristic, including pore size, continuity and air porosity.The results showed that with increase in soil moisture and Se, DP/D0 and Ka decreased ...  Read More

Research Article
Comparative Study Between Satellite and Ground-based Drought Indices Using Change Vector Analysis Technique (Case Study of Kermanshah Province)

sajjad ebrahimzadeh; javad bazrafshan

Volume 27, Issue 5 , November and December 2014, Pages 1034-1045


  Drought can affects by reduced water resources, agricultural productivity, change in vegetation cover, and accelerate the desertification of areas. In order to drought monitoring, we need to quantify drought effects by using drought indices. These indices based on type of available data are divided ...  Read More

Research Article
The Effect of Long-Term Application of Municipal Wastewater on Soil Physical Quality Indices: A Case Study in the Taqanak Farms, Shahrekord

habib beigi

Volume 27, Issue 5 , November and December 2014, Pages 1046-1056


  To investigate the long-term effect (13 and 23 years) of wastewater irrigation on soil physical quality indices in Taqanak, Shahrekord, four homogenous fields but with long and different history of treated municipal wastewater application were selected. The changes in conventional soil physical indicators ...  Read More

Research Article
Time Effect on Distribution of Different Fractions of Lead in Polluted Soils

ghodsie hoseinian rostami; Ahmad Gholamalizadeh Ahangar

Volume 27, Issue 5 , November and December 2014, Pages 1057-1066


  Adding heavy metals to soils leads to change of their original distribution pattern. Heavy metals distribution in soils depends upon heavy metal, application level, application time and soil characteristics as well. This investigation was conducted to assess the time effect on distribution of different ...  Read More

Research Article
River Flow Simulation Using Distributed Hydrological Model WetSpa in Atrak Watershed

zahra nameghi

Volume 27, Issue 5 , November and December 2014, Pages 1067-1076


  Simulation of rainfall-runoff process in the watershed has a significant importance from various points of view, such as better understanding of hydrological issues, water resources management, river engineering, flood control structures and flood storage. Therefore in this study, the river flow and ...  Read More