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 Mouth Shape on the Energy and Momentum Coefficients and Flow Separation Dimensions

mehdi karami moghadam; tooraj sabzevari; mehdi nourzadeh hadad

Volume 31, Issue 5 , November and December 2018, Pages 1278-1289


  Introduction: The study of flow diversion in open channels which has been, since long, under consideration by hydraulic engineers, is much used to divert flow from a main channel or from a river into an irrigation or hydropower channel. When a water intake with an angle is installed at one side of the ...  Read More

Research Article
Combining FAO Model and Vegetation Indices to Estimate Crop Coefficient Using Principle Component Analysis

Laleh Parviz

Volume 31, Issue 5 , November and December 2018, Pages 1290-1301


  Introduction: The globally growing demand for water has shown the need for its efficient and judicial utilization, and particularly in agriculture being single largest consumer of water. Crop evapotranspiration represents crop water demand and governed by weather and crop conditions and most of the current ...  Read More

Research Article
Evaluation the Effect of Different Land Use and Soil Characteristics on Saturated Hydraulic Conductivity

Elham Afzali Moghadam; naser boroumand; vahidreza jalali; saleh sanjari

Volume 31, Issue 5 , November and December 2018, Pages 1302-1312


  Introduction: The hydraulic parameters are very important for perception of water flow in unsaturated soil and using pollutants and nutrient flow modeling in the soil. The effect of soil management and land uses on soil parameters can directly alter soil hydraulic parameters. Because of interactive and ...  Read More

Research Article
Effects of Dissolved Organic Matter on Sorption of Metribuzin Herbicide by Two Different Soils

Mohammad Reza Rigi; Mohsen Farahbakhsh

Volume 31, Issue 5 , November and December 2018, Pages 1313-1324


  Introduction: The environment is contaminated through intensive or inappropriate use of herbicides. Quantifying the fate of applied herbicides in the soil is essential for minimizing their mobility in the soil and environmental pollution. The adsorption behavior of the soil-applied herbicides is one ...  Read More

Research Article
Distribution of Zn Fractons and their Relationship with Soil Properties in Some Soils of Khorasan Razavi Province

zahra sharifi; Alireza Astaraei; A Fotovat; mojtaba baranimotlagh; Hojat Emami

Volume 31, Issue 5 , November and December 2018, Pages 1325-1339


  Introduction: Zinc is one of the essential micronutrients for plants, mining and industrial activities leading to pollution of heavy metals, including zinc metal contamination in soils. In addition to the total concentration, knowledge of the Zinc fractions is necessary to assess the mobility of zinc ...  Read More

Research Article
Influence of Microbial Inoculation on Growth, Fe and Zn Uptake and Biochemical Response of Hyoscyamus niger L. in Lead (Pb) Stress

Akbar Karimi; Habib Khodaverdiloo; MirHasan Rasouli Sadaghiani

Volume 31, Issue 5 , November and December 2018, Pages 1340-1354


  Introduction: Recently, due to enhancement of industrialization, urbanization and disposal of wastes, fertilizers and pesticides the concentration of heavy metals (HMs)in agricultural soil has increased. Heavy metals are serious threat for environment due to their hazardous effects. Lead (Pb) is one ...  Read More

Research Article
Response of Earthworm Eisenia fetida to the Stresses Induced by Salinity and Lead Pollution in a Soil Amended with Cow Manure

Mina Nazarizadeh; Fayez Raiesi; Hamid reza Motaghian

Volume 31, Issue 5 , November and December 2018, Pages 1355-1370


  Introduction: Salinity and pollution are two environmental stresses that individually influence the population, growth and activity of earthworms as soil bioengineers. It is well-known that the population and activity of these organisms are mostly reduced or even their activity and growth can be stopped ...  Read More

Research Article
Investigation of Natural Radioactivity of Agricultural and Virgin Soils in Arak and Saraband Cities in Markazi Province, Iran

Reza Pourimani; Faeze Yousefi

Volume 31, Issue 5 , November and December 2018, Pages 1371-1382


  Introduction: Humans are constantly exposed to ionizing radiation. Most of the radiations originate from radioactive decay of natural radionuclides in the environment. Most of the ionizing radiations resulting from the decay of natural radioactive series of 238U, 235U, 232Th and 40K radionuclides in ...  Read More

Research Article
Evaluation Theerosion and Sediment in Different land Uses of Tamer Watershed, Golestan Province Using SWAT Model

farshad kiani; Behroz Behtari nejad; Ali Najafi nejad; Abdolreza Kaboli4

Volume 31, Issue 5 , November and December 2018, Pages 1383-1395


  Introduction: population growth, urbanization and land use changes cause negative effects in natural ecosystems and water resources. Soil erosion is one of the most important problems in agriculture and natural resources of Golestan province. Using low cost and accurate methods for planning and proper ...  Read More

Research Article
Effects of Jasmonic Acid and Humic Acid to Mitigate Drought Stress Effect During Pollination of Forage Maize

Elham Madadi; Seyfollah Fallah

Volume 31, Issue 5 , November and December 2018, Pages 1396-1408


  Introduction: Drought stress is one of the most important limiting factors for plant growth in the arid and semi-arid regions. This stress affecting crop production such as maize (Zea mays L.). Maize can play an important role in providing forage for silage animals, especially in the winter season in ...  Read More

Research Article
Impact of Different Tree Compositions and Soil Properties on Soil Microbial Community

samaneh Tajik; shamsollah Ayoubi; jahangir khajehali; shaban shataee

Volume 31, Issue 5 , November and December 2018, Pages 1409-1422


  Introduction: Soil microorganisms are the essential part of forest ecosystems which play a key role on soil nutrient changes. The biological activity in soil is largely concentrated in topsoil. Despite the small volume of microorganisms in soil, they have a key role on nitrogen, sulphur and phosphorous ...  Read More

Research Article
Application and Fertilization Efficiency of Iron in Some Wheat Genotypes

payman keshavars; majid forouhar; masoud Dadivar

Volume 31, Issue 5 , November and December 2018, Pages 1423-1431


  Introduction: World cereal demand is growing at present in accordance with the global expansion of human populations. Deficiency of micronutrients in cereal cropping is one of the major worldwide problems. Beside of lowering grain yield, it may cause some healthy problems in human populations. Iron is ...  Read More

Research Article
Determination of Effective Factors in Gullies Development in Modares Watershed of Shushtar

Freidoon Soleimani; Majid Soufi; Aziz Arsham

Volume 31, Issue 5 , November and December 2018, Pages 1432-1446


  Introduction: Khuzestan province with 4.6 million hectares area has suitable agricultural lands that gully erosion destroyed some parts of them. One of the major basins in which much of its agricultural land threatened by gully erosion is located in Modarres watershed of Shushtar. Gully erosion progression ...  Read More

Research Article
A Simple Physical Method for Purification of Sepiolite

Mahdiyeh Momen; Ali reza Karimi; Akram Halajnia; Parisa Mirhoseini Moosavi

Volume 31, Issue 5 , November and December 2018, Pages 1447-1455


  Introduction: Sepiolite is a fibrous clay mineral which is usually found in Tertiary sediments in arid environments. The most abundance of sepiolite is between 30⁰ to 40⁰ latitudes of both northern and southern hemispheres. Sepiolite is an Mg-rich clay minerals which is very sensitive to weathering. ...  Read More

Research Article
Firefly Algorithm and Genetic Algorithm Performance in Cation Exchange Capacity Prediction by Artificial Neural Networks

moslem servati; Hamidreza Momtaz

Volume 31, Issue 5 , November and December 2018, Pages 1456-1466


  Introduction: Cation Exchange Capacity (CEC) refers to the amount of negative charges available on the soil colloids surface. Clay and organic colloids carry a negative charge on their surfaces. Cations are attracted to the colloids by electrostatic bonds. Therefore, the charge of the soil is zero. For ...  Read More

Research Article
The Effect of Foliar Application of Iron Sources on Growth Parameters, Iron Concentration and Activity of Some Enzymes of Sorghum

Sabireh Golshahi; Ahmad Gholamalizadeh Ahangar; Noshin Mir; Maryam Ghorbani

Volume 31, Issue 5 , November and December 2018, Pages 1467-1480


  Introduction: First and the most important requirement of human being is food and food supply, which is directly, or indirectly associated with agriculture. Iron is a critical element for the growth, expansion and survival of the plant, since multiple metabolic and a physiological process is essential ...  Read More

Research Article
Investigation of Daily Rainfall Distribution Using the NRC Method (Case Study: Tabriz, Maragheh, Urmia and Mahabad)

Fatemeh Banan Ferdosi; yaghoub dinpazhoh

Volume 31, Issue 5 , November and December 2018, Pages 1481-1496


  Introduction: Study of various aspects of daily rainfalls is so crucial from the view of scientific management of water resources in every region. Iran is located in subtropical high-pressure belt, which had low annual rainfall. The precipitation regime is very irregular both in time and space. The East ...  Read More

Research Article
Snow Water Equivalent Estimation Using AMSR-E and GLDAS Model (Case study: Basins of Northwestern Iran)

hadi ansari; safar marofi

Volume 31, Issue 5 , November and December 2018, Pages 1497-1510


  Introduction: Snow water equivalent (SWE) provides important information for water resources management and recently has attracted the attention of many researchers using remote sensing. Remote sensing presents a possibility for observation of snow characteristics, like water equivalent, over larger ...  Read More

Research Article
Evaluation the Trend of South-West of Asia Precipitations

Mohammad Nazeri Tahroudi; Hossein Khozeymeh Nejad

Volume 31, Issue 5 , November and December 2018, Pages 1511-1525


  Introduction: Despite our scientific development and awareness of the consequences of regional and global climate change little attention has been paid to the effects of the changes in the Middle East and Central Asia yet. In the Middle East, climate change is a big challenge, especially if successive ...  Read More