Volume 76 (2023)
Volume 75 (2022)
Volume 74 (2021)
Volume 73 (2020)
Volume 72 (2019)
Volume 71 (2018)
Volume 70 (2017)
Volume 69 (2016)
Volume 68 (2015)
Volume 66 (2013)
Volume 65 (2012)
Volume 63 (2010)
Volume 62 (2009)
Effect of long-term cattle grazing on root distribution and morphological characteristics of Brachiaria decumbens (Case study: tropical pasture, Malaysia)

Majid Ajorlo; Mahboubeh Ebrahimian; Ramdzani Abdullah

Volume 67, Issue 3 , December 2014, Pages 333-344


  Root morphological and distribution responses of signal grass (Brachiaria decumbens) to long-term cattle grazing were examined in a tropical pasture in Malaysia. The treatments were no grazing by cattle and grazing at a moderate stocking density (2.7 animal unit/ha) under rotational grazing for 33 years. ...  Read More

Assessment of desertification potential using IMDPA model In Derakhte Senged water shed

Elham alsadat Abrisham; Sadat Feiznia

Volume 67, Issue 3 , December 2014, Pages 345-358


  The Derakhte Senged area is located in south of Neishaboor town at Khorasan Razavi province. In this research, desertification intensity of Derakht senged area was evaluated using IMDPA, one of the newest method to Assess desertification potential in arid and semi arid regions of Iran. To evaluate desertification ...  Read More

An optimized semi- automatic method for geomorphometric classification of Lut Yardangs using artificial neural etwork

amir houshang ehsani; Marzieh Foroutan

Volume 67, Issue 3 , December 2014, Pages 359-380


  In this study the land surface in western half of hyper-arid Lut desert, in south east of Iran, which is covered by Yardangs, a worldwide typical landform for Aeolian erosion, were classified by Self Organizing Maps (SOM) method. In the first step by using Digital Elevation Model with 10 m resolution ...  Read More

Mineral element values of 8 rangeland species in highland pastures of Taleghan

Hossein Arzani; javad Motamedi(torkan); Mahmood Hamidian; Zahra Arzani; Majid Akhshi

Volume 67, Issue 3 , December 2014, Pages 381-391


  To achieve the desired level of animal performance providing animal food supplies containing mineral elements is essential. For this purpose, mineral elements of 8 important rangeland species, including Ferula ovina, Prangus uloptera, Medicago sativa, Lotus goeblia, Trifolium montanum, Melilotus officinalis, ...  Read More

Spatial variability of rainfall erosivity indices using geostatistics in Khouzestan Province

Hossein Eslami; Ali Salajagheh; Shahram Khalighi sigaroudi; hasan Ahmadi; Shamsollah Ayoubi

Volume 67, Issue 3 , December 2014, Pages 393-406


  Rainfall erosivity is the ability of rainfall to detach the soil particles. This study was conducted to evaluate spatial variability of rainfall erosivity indices in Khouzestan Province. The point data of indices (EI30, AIm, KE>1 and Onchev indices) in 74 stations were used to generate spatial erosivity ...  Read More

Quantity assessment of water erosion intensity using regional model of erosion and sediment yield (Case study: Nir watershed, Ardebil)

Abazar Esmali; Hasan Ahmadi; Mohammad Tahmoures

Volume 67, Issue 3 , December 2014, Pages 407-417


  The aim of this research is to describe the development of a methodology based on present knowledge and available data for evaluation of water erosion behavior and risk as well as modeling and estimation of soil erosion, which is compatible for other similar areas of Iran. Accordingly, the conducted ...  Read More

Selection of the best empirical formula to estimate time of concentration in urban watersheds (Case study: Mahdasht town)

ali shahbazi; Shahram khaliqi sygarodi; Arash Malekian; Ali Salajegheh

Volume 67, Issue 3 , December 2014, Pages 419-435


  In order to decrease the risks associated with the management of urban watersheds, the use of proper methods is an essential task to estimate the runoff with a high degree of confidence. Time of concentration is one of factors that impacts on peak discharge and runoff volume. The objective of this study ...  Read More

Effects of pre-cooling treatment, osmotic potential and water stress on seedling growth of some population in two savory species (Satureja bachtiarica and S. sahendica) in laboratory and greenhouse conditions

Mysam shafie; Mohammad Ali Alizadeh; Ali Ashraf Jafari

Volume 67, Issue 3 , December 2014, Pages 437-450


  In order to study, the effect of pre-cooling treatment, osmotic potential and water stress on some population of two species of Satureja bachtiarica and Satureja sahendica was studied by a factorial experiment based on completely randomized design with three replications in laboratory and greenhouse ...  Read More

The changes in monthly and seasonal values of carbon emission in different grazing intensities (Case study: Ghoosheh, Semnan)

Ahmad Sadeghipour; nadia kamali; Paria Kamali; Hamed Joneidi

Volume 67, Issue 3 , December 2014, Pages 451-458


  This study investigates monthly and seasonal variations of carbon emission from the soil at different grazing intensities. Three areas of exclosure, low and high grazing intensities were selected in Ghoosheh region of Semnan province. Carbon emission was measured monthly, in each treatment applying alkali ...  Read More

Comparisons of different models for landslide susceptibility mapping in Zangvan watershed, Ilam province

Haji Karimi; Fathollah Naderi; Behrooz Naseri; Ali Salajeqeh

Volume 67, Issue 3 , December 2014, Pages 459-485


  Distinguishing the susceptible areas to landslide using different landslide susceptibility mapping (LSM) models is one of the primitive and basic works to reduce probable damages and reduce risk. The main purpose of this research is the efficiency evaluation of four methods including Information value ...  Read More

Investigation of morphological changes and nebkha formation in Capparis deciduas and C. spinosa in arid lands

Asghar Mosleh arany; Hamid Azimzadeh; Mohammad Reza Ekhtesasi; Neda imantalab; Ali Dolati

Volume 67, Issue 3 , December 2014, Pages 475-485


  This study aimed to investigate morphological changes of Capparis deciduas and C. spinosa and their effects on nebkha formation. In order to examine the morphological changes of these plants, nine C. spinosa nebkhas of varying ages were randomly selected and size and number of adventitious roots, number ...  Read More

Forecasting of runoff and sediment using neural network and multi regression in Aghajari Marls

Mahadi Vatakhah; Hamzeh Saidian

Volume 67, Issue 3 , December 2014, Pages 487-499


  Erosion and sediment movement phenomena are one of the most complex issues in management of rivers drainage areas that in water projects are very important. That its measurement wants high time and cost. Issue of surface runoff in river basin is a complex issue that human knowledge and understanding ...  Read More