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
Comparison Eight Methods for Estimating Soil Moisture Characteristic Curve Based on Two Methods for Estimating Soil Particle Size Distribution Curve

H.R. Fooladmand

Volume 28, Issue 6 , January and February 2015, Pages 1085-1094


  The relationship between soil moisture and soil matric suction is called soil moisture characteristic curve, which its measurement is time-consuming and expensive. One of the estimation methods of soil moisture characteristic curve is using the soil particle size distribution curve and bulk density which ...  Read More

Research Article
The Role of Agricultural Management in Sustaining Zayandeh-rud Flow

H. Emami Heidari; H. Jafari; Gh. Karami

Volume 28, Issue 6 , January and February 2015, Pages 1095-1106


  Management of agricultural practices plays a vital role in reducing the use of limited water resources in arid and semi-arid regions which could result in their sustainability. In this research, the role of managing agriculture in sustaining flow of Zayandeh-rud was studied by calculation of rice water ...  Read More

Research Article
Determination of Appropriate Irrigation Depth of Sante Cultivar and New Potato Clones in Deficit Irrigation condition

A. Ghadami Firouzabadi; mahmood raeini; A. Shahnazari

Volume 28, Issue 6 , January and February 2015, Pages 1114-11107


  Water is the most important factor in agricultural products, water shortage and low irrigation efficiencies in Iran necessitates research in deficit irrigation. This Study to estimate the production function, calculate the depth and optimal index and effect of deficit irrigation on yield was done in ...  Read More

Research Article
Evaluation of Regression and Neuro_Fuzzy Models in Estimating Saturated Hydraulic Conductivity

J. Behmanesh; E. Rezaie

Volume 28, Issue 6 , January and February 2015, Pages 1115-1125


  Study of soil hydraulic properties such as saturated and unsaturated hydraulic conductivity is required in the environmental investigations. Despite numerous research, measuring saturated hydraulic conductivity using by direct methods are still costly, time consuming and professional. Therefore estimating ...  Read More

Research Article
Sensitivity Analysis of ETo for Five Current Models Using Monte-Carlo Simulation Case study: Bojnourd Synoptic Station

M. Makari; B. Ghahraman; S.H. Sanaeinejad

Volume 28, Issue 6 , January and February 2015, Pages 1126-1136


  The objective of this study is to analyze the sensitivity of ETo for five models including FAO-Penman-Monteith, modified Blaney-Criddle, Hargreaves, Hargreaves-Samani and Priestley –Taylor. Daily meteorological data of Bojnourd synoptic station including air temperature, relative humidity, actual duration ...  Read More

Research Article
Investigation on Vulnerability of Tabriz-plain Unconfined Aquifer

M. Tabarmayeh; A. Vaezi Hir

Volume 28, Issue 6 , January and February 2015, Pages 1137-1151


  It is more expensive to remove pollution from groundwater than to prevent it. Delineation areas that arevulnerable to surface pollutants is one of methods to prevent pollution of groundwater resources. Focusing on this issue, DRASTIC model was used for evaluation of vulnerability of Tabriz-plain aquifer ...  Read More

Research Article
Assessment of Wavelet Energy Function Capability in Flood Risk Estimation in Compare with Traditional Methods

S. Shahabi; M.J. Khanjani

Volume 28, Issue 6 , January and February 2015, Pages 1152-1161


  In this paper a method to perform Estimation of Flood Risk (EFR) is presented when the assumption of stationary is not important (or not valid). A wavelet transform model is developed to EFR. A full series is applied to EFR using energy function of wavelet. The data were decomposed into some details ...  Read More

Research Article
Comparison between Genetic Programming and Support Vector Machine Methods for Daily River Flow Forecasting (Case Study: Barandoozchay River)

F. Ahmadi; F. Radmanesh; Rasoul Mirabbasi

Volume 28, Issue 6 , January and February 2015, Pages 1162-1171


  Accurate estimation of river flow can have a significant importance in water resources management. In this study, Genetic programming (GP) and Support Vector Machine (SVM) methods were used to forecast daily discharge of Barandoozchay River. The daily discharge data of Barandoozchay River measured at ...  Read More

Research Article
Comparison of the Gen Expression Programming, Nonlinear Time Series and Artificial Neural Network in Estimating the River Daily Flow (Case Study: The Karun River)

R. Zamani; F. Ahmadi; F. Radmanesh

Volume 28, Issue 6 , January and February 2015, Pages 1172-1182


  Today, the daily flow forecasting of rivers is an important issue in hydrology and water resources and thus can be used the results of daily river flow modeling in water resources management, droughts and floods monitoring. In this study, due to the importance of this issue, using nonlinear time series ...  Read More

Research Article
Effects of Irrigation Levels, Plant Densities and Planting Patterns on Water Use Efficiency Corn (KSC700(

Sh. Ashrafi; Hossin Sadrghaen; J. Baghani

Volume 28, Issue 6 , January and February 2015, Pages 1183-1190


  In order to evaluate the effects of different levels of irrigation, crop densities and cropping patterns on corn (KSC700 variety) water use efficiency using subsurface drip irrigation system, three field experiments were carried out in 2005 and 2006 in Karaj. Experimental design was split plot design ...  Read More

Research Article
Assessment of Climate Change Impacts on Water Resources in Zarrinehrud Basin Using SWAT Model

B. Mansouri; H. Ahmadzadeh; A. Massah Bavani; saeed morid; M. Delavar; S. Lotfi

Volume 28, Issue 6 , January and February 2015, Pages 1203-1291


  This paper evaluate impacts of climate change on temperature, rainfall and runoff in the future Using statistical model, LARS-WG, and conceptual hydrological model, SWAT. In order to the Zarrinehrud river basin, as the biggest catchment of the Lake Urmia basin was selected as a case study. At first, ...  Read More

Research Article
Organic Matter Unstability (Ripening) Evaluation in Histosolsof South-west Shahrekord

J. Givi; F. Raeisi; F. Dehghani

Volume 28, Issue 6 , January and February 2015, Pages 1204-1216


  Purpose of this research was evaluationof organic matter unstability (ripening) of Histosolsof south-west Shahrekord,using humusunstability indices, including ratios of humic acid (HA) to fulvic acid (FA), sum of organic material types, soluble in alkali (AE=FA+HA) to humin fraction (HUM) and also ratio ...  Read More

Research Article
Study of Effects of Sorghum Cultivation on Some Soil Biological Indicators at Different Zinc Levels

S. Bagheri; hossein mirseyed hosseini

Volume 28, Issue 6 , January and February 2015, Pages 1217-1227


  Zinc is an essential element for plant growth which its high concentrations can cause pollution and toxicity in plant. In this study, the effects of sorghum cultivation on some indicators of microbial activity and its association with increased zinc concentrations in two soils with relatively similar ...  Read More

Research Article
Effectiveness of Arbuscular Mycrrhizal Fungi in Phytoremediation of Zinc Contaminated Calcareous Soil by Vetiver Grass

M. Bahraminia; M. zarei; abdolmajid ronaghi; R. Ghasemi

Volume 28, Issue 6 , January and February 2015, Pages 1228-1237


  A greenhouse experiment was conducted to evaluate the effectiveness of arbuscular mycorrhizal (AM) fungi in phytoremediation of zinc contaminated calcareous soil by vetiver grass. Experiment was a factorial arranged in a completely randomized design (CRD) with three replications. Two factors consisted ...  Read More

Research Article
Isolation and Evaluation of Lead (Pb)-Tolerant Plant Growth Promoting Rhizobacteria from a Soil Containing Pb for Long Term

Mohammad Reza Naderi; A. Danesh Shahraki; F. Raiesi; F. Nikookhah

Volume 28, Issue 6 , January and February 2015, Pages 1238-1249


  This study was performed in order to isolate lead (Pb)-tolerant plant growth promoting rhizobacteria in Pb-contaminated soils and to evaluate their potential for production of plant promoting substances. The isolated Pb-tolerant rhizobacteria were identified as Rhodococcus sp., Bacillus stearothermophilus ...  Read More

Research Article
Comparison of Linear Regression Methods, Geostatistical and Artificial Neural Network Modeling of Organic Carbon in Dry Land of Sistan Plain

Ahmad Gholamalizadeh Ahangar; F. Sarani; M. Hashemi; A. Shabani

Volume 28, Issue 6 , January and February 2015, Pages 1250-1260


  Knowledge of organic carbon spatial variations in different land uses will help to interpret and simulate the behavior of terrestrial ecosystems facing environmental and climate changes. The purpose of this study is comparing regression, geostatistics and artificial neural network (ANN) methods for predicting ...  Read More

Research Article
The Effect of Land Use Change on Soil Type and Clay Mineralogy in Safashahr Area, Fars Province

R. Karimi; M.H. Salehi; Z. Mosleh

Volume 28, Issue 6 , January and February 2015, Pages 1261-1270


  Nowadays, changing the rangelands to agriculture and garden is common. To investigate the impact of land use change on the soils type and clay mineralogy, four land uses including rangeland with poor vegetation, agricultural land, new and old apple orchards were selected in Safashahr area, Fars province. ...  Read More

Research Article
Investigation te Spatial Variability of some Soil Physical Quality Indices in Fandoghlou Region of Ardabil Using Geostatistics

Sh. Asghari; S. Dizajghoorbani Aghdam; Abazar Esmali

Volume 28, Issue 6 , January and February 2015, Pages 1271-1283


  Knowledge of the spatial distribution of soil properties is the major issues in identifying, program planning, management and utilization of soil and water resources. This study was carried out to investigate the spatial variability of some important soil physical quality indices including sand, silt, ...  Read More

Research Article
Study on Climate Change Effect on Net Irrigation Requirement and Yield for Rice Crop (Case Study: Tajan Plain)

M. Sheidaeian; Mirkhaleg Ziatabar Ahmadi; R. Fazloula

Volume 28, Issue 6 , January and February 2015, Pages 1284-1297


  In this study, impact of climate change on net irrigation requirement (In) and yield of Rice Crop using HadCM3 climate projection model, one of the AOGCM models, in Tajan Plain area is evaluated. Changes in temperature and precipitation were simulated run under the IPCC scenario A2 for 2011-2040, 2041-2070 ...  Read More

Research Article
Determining of most Effective Factors on drought Useing of Panel Data Analyse (Khorasan Razavi Province)

Gh. Kavakebi; M. Mousavi Baygi; A. Mosaedi; Mehdi Jabbari Nooghabi

Volume 28, Issue 6 , January and February 2015, Pages 1298-1310


  Drought is a natural creeping event that starts due to lower moisture compared to normal condition. This phenomenon impacts all aspects of human activities. However there is neither any detailed definition nor a general and proper index for drought monitoring In the present study using the Drought indices ...  Read More