Volume 77 (2024)
Volume 76 (2023)
Volume 75 (2022)
Volume 74 (2021)
Volume 73 (2020)
Volume 72 (2019)
Volume 71 (2018)
Volume 70 (2017)
Volume 68 (2015)
Volume 67 (2014)
Volume 66 (2013)
Volume 65 (2012)
Volume 63 (2010)
Volume 62 (2009)
Assessment and Mapping Desertification Risk in Roudab Region

Fatemeh Azariyan; Sara Valizadeh; Pouyan Dehghan; Hassan Khosravi

Volume 69, Issue 4 , March 2017, Pages 789-804


  Iran is mostly consisted of arid and semi-arid areas. Rudab region, Sabzevar, is indicative of an areaexposed to and affected by the risk of desertification. This study accordingly is aimed at assessingthe risk of desertification using ESAs model, through mapping the risk of desertification. Initially,work ...  Read More

Assessing the Effects of Socio-Economic Issues on Social Cohesion of Nomads (Case study: Shahsavan Nomads, Sabalan Mountain Range)

asgar hosseinzadeh; Ghodratolah Heidari; Hosein Barani; Hasan Zali; Ehsan Zandi Esfahan

Volume 69, Issue 4 , March 2017, Pages 851-861


  Nomadic migration has been a way of living in Iran from ancient times. Although this way of life has changed in different periods, the intensity of these changes has an origin in social, political and security issues in addition to livestock and rangelands. The population of the study area is 70 and ...  Read More

Evaluation of Logistic Regression Efficiency in Mapping Flood Susceptibility

khabat Khosravi; Edris Marufinia; Ebrahim Nohani; Kamran Chapy

Volume 69, Issue 4 , March 2017, Pages 863-876


  In order to prevent any damages which can be caused by flood at Haraz watershed in the Mazandaran province, it is essential to prepare a flood susceptibility map using logistic regression. About 211 flood locations and 211 non-flood locations were first recognized. Ten flood conditioning factors such ...  Read More

Vulnerability Assessment; a Strategy for Sustainable Rangeland Management(Case Study: Lowland Rangelands of Aran-v-Bidgol County, Isfahan)

valiollah Raufirad; Qodratollah Heidari; Hossein Azadi; Jamshid Ghorbani

Volume 69, Issue 4 , March 2017, Pages 877-893


  The purpose of this study was to assess socio-economic vulnerability in lowland rangelands of Aran-v-Bidgol County. Accordingly, the most important socio-economic indices were identified using literature review. The sample size was calculated based on Cochran’s formula. Data was collected using ...  Read More

Effects of Simulation Burning on Soil Moisture, Physical and Chemical Properties under Controlled Conditions

zohre sepehri; Zeinab Jafarian; Ataolah Kavian; ghodratollah heydari

Volume 69, Issue 4 , March 2017, Pages 895-905


  Since fire effects on soil properties, awareness about effects of fire on soil is important for fire management. This study was carried out to investigate effects of fire on hydrological, physical and chemical properties of soil in Charat rangeland of Savadkuh. Sampling was performed in two plant types ...  Read More

Estimating Biomass using Landsat Satellite Images (Case study: Marak, Birjand)

sahar sabaghzade; Mohammad Zare; Mohamad Hosein Mokhtari

Volume 69, Issue 4 , March 2017, Pages 907-920


  Vegetation is an important component of each global ecosystem. Determining of the biomass of plant is important to assess its impact upon climate, soil erosion, and as well for management of natural resources. The aim of this study was to estimate biomass using vegetation indices based on remote sensing. ...  Read More

Evaluating the Trend of Spatial and Temporal Changes in Groundwater Quality in Jiroft Plain

Farshad Soleimani; Naser Brumand; ali azareh

Volume 69, Issue 4 , March 2017, Pages 921-932


  In recent decades, increasing population growth and development of agriculture have increased groundwater consumption and decreased the quality of groundwater resources of most parts of the country. Given the importance of this issue, present study investigates the spatial and temporal changes in parameters ...  Read More

Comparative Study of the Hydraulic Thresholds of Gully Erosion Flow in Different Land Uses (Case Study: Ghasreshirin, Kermanshah, Iran)

Khosro Shahbazi; ali salajagheh; mohammad jafari; hassan ahmadi; ali akbar nazari samani; mohammad khosro shahi

Volume 69, Issue 4 , March 2017, Pages 931-947


  Negative impacts of gully erosion in marl areas are severe due to improper landuse practices such as irrigation, tillage, overgrazing and degradation of vegetation cover.  The objective of this research was to evaluate hydraulic flow thresholds of gully erosion in the agriculture (AG), fair rangeland ...  Read More

Role of Livestock Management on Vegetation Properties in Summer Rangelands of Chahr Bagh, Golestan

esmaeil sheida karkaj; javad motamedi; fateme alilu; hamid sirusi

Volume 69, Issue 4 , March 2017, Pages 949-961


  Grazing management is one of the basic elements in managing rangeland ecosystems. Proper use of grazing lands in order to achieve optimal efficiency and maintain the sustainability of rangeland ecosystems is the purpose of grazing management. In order to evaluate the response of vegetation to grazing ...  Read More

Statistical Comparison of IMERG and TMPA 3B42V7 Level-3 Precipitation Products of TRMM and GPM (Case Study: Kashafrud Basin, Khorasan Razavi Province)

Seyde maryam Alibakhshi; Alireza Faridhosseini; kamran davari; amin alizadeh; Henry Munyka Gathecha

Volume 69, Issue 4 , March 2017, Pages 963-981


  Satellite precipitation products have been used in scientific studies in global and regional scales from several decades ago. The purpose of this research is quantitative comparison between TRMM and GPM precipitation products in Kashafrud basin. The important point about these products is their accuracy ...  Read More

Assessment of Flood Water Spreading Projects on Soil Characteristics in Yazd Province

mohamadreza fazelpour aghdaei; hosein maleki nezhad; mohammad reza ekhtesasi; jalal barkhordari; Asghar Zarea Chahooki

Volume 69, Issue 4 , March 2017, Pages 983-997


  Given the widespread distribution of flood water spreading areas and variety of main effective parameters in their design and implementation, assessment of the performance of system components located in different areas of the country is necessary so that optimal patterns can be achieved. This research ...  Read More

Temporal and Spatial Patterns in Rangeland according to Indegenious Knowledge of Boirahmad Tribe

Mohammad Rahim Forouzeh; gholam ali heshmati; hosein barani

Volume 69, Issue 4 , March 2017, Pages 999-1015


  Iran is a country with an ancient culture. During a long time, its inhabitants have created various classifications, nominalizations and technologies on the basis of preference and innovation in different fields in order to adapt with the events happening around. These rich sources of knowledge are being ...  Read More

Investigating Geology Impact upon Flood Occurrence (Case Study: Joneghan Watershed Basin, Shahr-e-Kord)

sadat Feiz Nia; Mariam Musavian; Zohreh Abdolahian Dehkordi; Khadijeh Ebrahimi Dorche

Volume 69, Issue 4 , March 2017, Pages 1017-1030


  Physical characteristics of drainage basins suchas geological materials, landuse type and vegetation cover, soil type, surfacepermeability, depth of underground water table, topographical conditions anddrainage are important factors in flood occurrence which affect prevailingequations on water movement ...  Read More

Numerical Analysis of Applying Quantitative and Qualitative Scenarios on Khezel Aquifer in Hamedan Province with MODFLOW & MT3DMS Models

Rasool Ghobadian; Zeynab Bahrami

Volume 69, Issue 4 , March 2017, Pages 1043-1062


  Increased exploitation of groundwater besides recent periods of drought caused a negative balance in Khezel aquifer located in Hamedan province, Iran. From 2000 to 2010, groundwater surface drop was estimated 5.8 meters. With regard to high potential of GMS in using GIS and careful stratification of ...  Read More

Investigation of the Effects of Different Land Uses on Some Chemical Properties of Soil in Jamalabad Region of Baft County

sedigheh mohamadi

Volume 69, Issue 4 , March 2017, Pages 1063-1073


  This research was done to investigate the effects of change in land use on chemical soil properties in Jamalabad region of Baft county of Kerman province. The experiment was conducted in six  sites with the same ecological condition as non grazed site (NG) for 10 years, a moderately grazed site ...  Read More