Volume 77 (2024)
Volume 76 (2023)
Volume 75 (2022)
Volume 74 (2021)
Volume 73 (2020)
Volume 72 (2019)
Volume 71 (2018)
Volume 69 (2016)
Volume 68 (2015)
Volume 67 (2014)
Volume 66 (2013)
Volume 65 (2012)
Volume 63 (2010)
Volume 62 (2009)
Investigation of the role of Structural elements on the water resource abundance in the Maharloo Karst region using RS and GIS

sara Edrisnia; Ahmad Pahlevanroy; Alireza Moghadamnia; Aliakbar Nazarisamani; Abas Miri

Volume 70, Issue 2 , August 2017, Pages 263-275


  In Low rainfall, dry areas such as Iran that surface fresh water resources are limited and this water is exposed to pollution risk, finding and preserving underground water supplies is the best way for removing water needs. In addition, in some parts of Iran, climate and tectonic structure have created ...  Read More

The study preference value of rangeland species for sheep and goat. (Case study: Saleh Abad site in province Ilam)

ayad aazami; Mohamad Fayaz; Jeafer Hosianzadeh

Volume 70, Issue 2 , August 2017, Pages 277-286


  Depending on in which season or in which section of rangeland livestock grazes, it shows certain behavior. Present study is therefore aimed at exploring preference value of species in Saleh Abad rangelands of Ilamprovince from 2007 to 2010. In this study, the preference value of 17 species and annual ...  Read More

Analyzing Effective Factors on »Time Management of Livestock « Grazing on Lorestan Province Rangeland (Case Study: KouhDasht city)

samira hajipuor; Hossein Barani; hassan yaganeh; Ahmad Abadi Sarvastani

Volume 70, Issue 2 , August 2017, Pages 287-297


  Observing livestock grazing time in rangelands is quite important for conservation of rangelands and protecting them against degradation. This study was aimed at assessessment of factors that contribute to observing grazing time in rangelands of Kouhdasht County in Lorestan province. This study is a ...  Read More

Evaluation of Urmia Lake Crisis Management Solutions with an Emphasis on Maximum Participation of Farmers (Case Study: Simineroud Watershed)

Alireza Daneshi; mehdi vafakhah; Mostafa Panahi

Volume 70, Issue 2 , August 2017, Pages 299-314


  Due to problems of Urmia Lake, several strategies have been proposed by professionals to restore it. But it should be noted that the implementation of each plan and project within the watershed requires the participation ofstakeholders and farmers within that watershed. Due to the lack of attention to ...  Read More

Evaluate the potential of Agropyron intermedium (Host) P. Beauv. and Dactylis glomerata L. species in phytoremediation of soil contaminated with crude oil in terms of greenhouse

Javad Daeizadeh; MAHSHID souri; Ehsan Zandi Isfahan; javad motamedi

Volume 70, Issue 2 , August 2017, Pages 315-331


  Total Petroleum Hydrocarbons are toxic and persistent pollutants that are considered as fundamental threat to the ecosystem. Phytoremediation, the use of plants for remediation of contaminated soils, is an effective and affordable way to reduce soil pollution. In this study, the potential phytoremediation ...  Read More

Study the effects of using zeolite on the prototypical stages of growth in pasture species: Cymbopogon Olivieri ,Medicago sativa and Medicago scutellata

somaie dehdary; zohreh kuhansani; fatemeh shojaee; ruhangiz kazemi

Volume 70, Issue 2 , August 2017, Pages 333-344


  To evaluate the effect of zeolite on the growth of plants in drought conditions. Cymbopogonolivieri, Medicago sativa, Medicagoscutellata in three zeolite levels (2 g, 4 g and zero in a kilogram potting soil) with 15 repetitions was considered. After ensuring the germination of plants, 7-day irrigation ...  Read More

Comparison of the Efficiency of Support Vector Regression and K-Nearest Neighbor Methods in suspended sediment load Estimation in river (Case Study: Lighvan Chay River)

ali rezazadeh joudi; Mohammad Taghi Sattari

Volume 70, Issue 2 , August 2017, Pages 345-358


  Estimation of suspended sediment load or specifying the damages incured as a result of inattention to such estimation is one of the most important and fundamental challenges in river engineering and sediment transport studies. Given the importance and role of sediment in the design and maintenance of ...  Read More

Preference value of plant species grazed by sheep during the grazing season in Khoshkerood Saveh rangelands )Case study: cross-breed Sangsari-Afshar)

Sedigheh Zarekia; Mohammad Fayyaz; Niloofar Zare

Volume 70, Issue 2 , August 2017, Pages 359-372


  Defining the preference value of plant species is necessary for planning and management of livestock and rangeland. The purpose of this study was to investigate the preference value of plant species grazed by sheep during the grazing period in Khoshkeh rood Saveh Rangeland of Markazi Province using species ...  Read More

Anticipating of spatial changes trend of land uses based on the cellular automaton-Markov model in Kessillian watershed

M Zare; Aliakbar Nazari Samani; shahram khalighi; javad bazrafshan; mohsen hasan joury

Volume 70, Issue 2 , August 2017, Pages 373-383


  Land use Changes have recently been increasing due to anthropogenic and climatic factors. Natural resources management critically needs land use maps and simulation of its changes for understanding the interaction and relationship between humans and natural phenomena, as well as for making premium decisions. ...  Read More

Determine the most important criteria and indicators that influence land degradation and desertification

Nooshin Shakerian; Gholamreza Zehtabian; Mohammad Ali Zareh Chahooki; Hassan Khosravi

Volume 70, Issue 2 , August 2017, Pages 385-398


  Nowadays, land degradation and desertification are serious and complex problems that have turned into a worldwide crisis in the world. Using evaluative systems to study degradation and adopting an appropriate strategy to deal with this phenomenon is necessary and important.  The first step in the ...  Read More

Effect of Data Length, Study Span and Number of Stations on Amount of Rainfall Erosivity Factor Variability in Different Time Scales in Iran

Seyed Hamid Reza Sadeghi; Mohsen Zabihi; Mehdi Vafakh

Volume 70, Issue 2 , August 2017, Pages 399-409


  Regarding the undeniable role of rainfall erositivity factor in initiating water erosion, studying its different aspects is important in optimal soil and water resources management. It is taken in to account in many soil erosion estimation models which are used for soil and water conservation. However, ...  Read More

Assessment of livestock pressure and its effect on desertification hazard, case study ‎area: Miyandehi Feizabad, Khorasan Razavi

zohreh asar; masoud masoudi

Volume 70, Issue 2 , August 2017, Pages 411-421


  Desertification refers to land degradation in arid, semi-arid, and dry sub-humid region. It is a global environmental problem with political and socio-economic consequences. Land degradation occurs as a result of impoverished vegetation cover that may lead to a progressive and irreversible reduction ...  Read More

Groundwater Quality Analysis for Drinking and Agricultural Purposes-a Prerequisite for Land Use Planning in the Arid and Semi-arid Regions of Iran

Abbas Alipour; Jaber Rahimi; Ali Azarnivand

Volume 70, Issue 2 , August 2017, Pages 423-434


  Groundwater resources play central role in meeting domestic and agricultural demands of residents in arid regions. Owing to rapid urbanization, water use and land use has changed considerably. Overexploitation of wells posed a huge burden on available water resources. Degradation of water resources along ...  Read More

Depositions Analysis of Actors and Social Capital for Co_ Management of Socio_Ecologic Systems (Study Area: Hagholkhaje Village, Mayamey District, Semnan Province)

leila avazpour; mahdi ghorbani; reza erfanzadeh

Volume 70, Issue 2 , August 2017, Pages 435-448


  Social capital is the prerequisite of co_management. Evaluation of social capital for achieving community-based management is therefore of capital importance. Detection of key actors in local communities for co_management of natural eco_systems is as well quite important. These people are generally regarded ...  Read More

Comparison of some effective environmental factors on distribution of Dactylis glomerata L. and Thymus kotschyanus Boiss and Hohen. in South of Ardabil province

ardavan ghorbani; ardeshir pour nematy; zohreh sadat ghasemi; aliakbar shokuhian

Volume 70, Issue 2 , August 2017, Pages 449-464


  The aim of this study was identifying the effects of environmental factors on the distribution ofDactylisglomerataand Thymus kotschyanusin rangelands of Khalkhal and Kosar counties in the southern part of Ardabil province. From 111 selected sites, random systematic sampling was done using five 1m2 plots ...  Read More

Analysis of the surface water quality parameters in the Aji-Chai Watershed based on the multivariate statistical techniques

majid kazemzadeh; arash malekian

Volume 70, Issue 2 , August 2017, Pages 465-478


  One of the most important dynamic ecosystems is river, awareness of spatio-temporal water quality changes of which is necessary. In this research, we studied the spatiotemporal water quality changes using three techniques of Cluster analysis (CA), Discriminant analysis (DA) and Principal Component analysis ...  Read More

Assessing the Impacts of Natural Resources Management Projects on Rural Households’ Social Capital in the Mahneshan Township

Kobra Karimi; esmaeel karami dehkordi; khalil aghajanlu

Volume 70, Issue 2 , August 2017, Pages 479-494


  Assessment of rangeland management projects enables policy makers and planners to understand their impacts from different environmental, social, human, and economic aspects. The aim of this research is to assess rural households’ perspective regarding the impact of rangeland management projects ...  Read More

Status and trends of dust storms in Iran from 1364 to 1384

Shirin Mohammadkhan

Volume 70, Issue 2 , August 2017, Pages 495-514


  The phenomenon of dust storm causes a number of damages such as aggravation of heart or lung disease, air and land traffic. Occurrence of dust storm has been growing inrecent years and has created many problems in some cities of Iran. Dust storms of Iran arise either from internal or external sources. ...  Read More

Comparing Regional Analysis methods for estimation of the peak flow in some watersheds of Isfahan–Sirjan and Yazd-Ardakan Basins

mojdeh mohammadi; Hossein Malekinezhad; Mohammad Taghi Dastorani

Volume 70, Issue 2 , August 2017, Pages 515-529


  Main problems in flood frequency analysis are limited number of gauging stations and recorded data, together with the inaccurate at-site estimations in the study area. These problems have caused increasing application of regional methods. Regional analysis seems to be a useful method for estimating peak ...  Read More

Modeling of the impact factors on the length development of the marl gullies and determined of the sediment contribution of them (case study: Darb Khazine Basin)

sajad neisi; bizhan khalili moghadam; amin zorati pour

Volume 70, Issue 2 , August 2017, Pages 531-541


  Gully erosion is one of the aprogressive forms of soil degradation in ranges and agricultural lands which is a warning sign of land degradation and progressive erosion. Monitoring effective factors of gully length development over time is a necessity for sustainable development in watersheds. In this ...  Read More