Volume 31 (2024)
Volume 30 (2023)
Volume 29 (2022)
Volume 28 (2021)
Volume 27 (2020)
Volume 9 (2019)
Volume 8 (2019)
Volume 26 (2019)
Volume 12 (2019)
Volume 10 (2019)
Volume 25 (2018)
Volume 24 (2017)
Volume 23 (2016)
Volume 22 (2015)
Volume 21 (2014)
Volume 20 (2013)
Volume 19 (2013)
Volume 18 (2011)
Volume 17 (2010)
Volume 16 (2009)
Volume 15 (2008)
Volume 13 (2006)
Volume 7 (2000)
Volume 6 (1999)
Volume 11 ()
Limitation of Landsat ETM+ employment for mapping of vegetation cover in drought conditions

Jalal Abdolahi; Mohammad hasan Rahimian; Mohammad hosein Savaqebi

Volume 14, Issue 3 , January 2007, Pages 289-301

Abstract
  Today, various indices have been developed for monitoring of vegetation cover in different climatic condition, which cause variation in aspect and spectral reflectance. Therefore, an index can give different values in different conditions. In addition, sparse vegetation and soil background are the other ...  Read More

Extraction and identification of sypbiotic rezibium race from the moset important ranglands legumes in Esfahan provionce

Shaban Shafizadeh; Ahmad reza Seifalahi; Zabih Eskandari

Volume 14, Issue 3 , January 2007, Pages 302-312

Abstract
  The defficiency of Nitrogen in soil causes low growth of plant. Gas nitrogen is comprised of 80% of the atmosphere and is converted to nitrogen ion by different methods that are used by plants. Symbiosis of Rhizobium bacteria with legumes is the most effective methods to fix nitrogen. Isolation, identification ...  Read More

Growth of Haloxylon spp. plantation, ten years after thinning, in Sabzevar

Mohammad javad Ahmadian yazdi; Esmaeil Rahbar; Orujali Karimi

Volume 14, Issue 3 , January 2007, Pages 313-322

Abstract
  A general model was developed to explain the interrelationships between soil saturation percentage, mean annual precipitation, and population density on growth and vigority of planted Haloxylon trees. Based on the model, estimated number of population density for 7 years old Haloxylon plantation in Sabzevar ...  Read More

Study and introduction of Garghologh alfalfa- the indigenous cultivar of northwestern Iran

Ahmad Tobeh; Amir Ghalavand; Eslam Majidi; Mahdi Panahian

Volume 14, Issue 3 , January 2007, Pages 323-335

Abstract
  This experiment carried out in order to compare morphological and physiological characteristics of drought and chilling resistance of alfalfa cultivar in 1379. Garghologh with four varieties Hamedani, Yazdi, Bami and Baqdadi using field (based on Latin Square Design), pot and in vitro culture. According ...  Read More

Evaluation of Dry Matter, Water Relationships and Osmotic Adjustment in Two Pasture Annual Medic Genotypes (Medicago laciniata(L.) Mill) under Drought Stress

Majid Ghorbani javid; Gholamabbas Akbari; Foad Moradi; Eraj Allahdadi

Volume 14, Issue 3 , January 2007, Pages 336-351

Abstract
  In order to study the yield and water relations and osmotic adjustment in sensitive and tolerant genotypes of cutleaf medic (Medicago laciniata(L.) Mill) under drought stress, a greenhouse experiment was conducted in 2004, using a factorial arrangement in RCBD with three replications. Two genotypes of ...  Read More

The effect of salinity stress on Germination of two species of Artemisia scoparia , Artemisia vulgaris

Hosein Azarnivand; Mahdi Ghorbani; Hamed Joneidi jafari

Volume 14, Issue 3 , January 2007, Pages 352-358

Abstract
  In this study, effect of salinity stress on germination of Artemisia scoparia and Artemisia vulgaris were investigated.Five salinity treatments included distilled water, 100,200,300 and 400 mM NaCl . Experimental design was factorial with CRD arrangement and 4 Replication. Result showed, Artemisia Scoparia ...  Read More

Autecology of Ferula ovina Boiss. in Tehran Province

Farhad Azhir; Amrali Shahmoradi

Volume 14, Issue 3 , January 2007, Pages 359-367

Abstract
  Accessibility to a major portion of information about vegetation cover function of rangeland ecosystem is provided by the way of autecological study of range plant species. Autecological study of a range plant named Ferula ovina was accomplished in Tehran province. Topographic, edaphic, and climatic ...  Read More

Effect of floodwater spreading and consumption on groundwater resources in Gareh Bygone Plain

Gholam reza Ghahari; Mojtabah Pakparvar

Volume 14, Issue 3 , January 2007, Pages 368-390

Abstract
  The artificial recharge of groundwater (ARG) is a proven method of increasing the water level in unconfined aquifers. Although the ARG activities at the Kowsar Station have been proven successful due to an 8 fold increase in the area of irrigated farm fields, quantitative studies are lacking. We have ...  Read More

Investigation of the geological causes effective in desert formation and it's boundaries in Boushehr province

Farhad Fakhri; Seyid Moh... Jafari; Mohammad Khosroshahi

Volume 14, Issue 3 , January 2007, Pages 391-402

Abstract
  Since geological formation is very important in the process of desert and desertification, in this article lithology, stratigraphy of the  Boushehr province was studied with the help of  1:100000, 1:250000 scale maps of G.S.I and N.I.O.C using GIS methodology. Quaternary formations and most ...  Read More

Application of Filter and Band Ratio techniques to identify and separate active (new) and inactive (old) sand dunes (a case study of Tabas).

Ebrahim khalifeh; Mojtabah Pakparvar; Mohammad reza Kaviyanpoor

Volume 14, Issue 3 , January 2007, Pages 403-420

Abstract
  Active sand dunes particularly barkhans are serious threats for adjacent civilians live, agricultural lands and economic activities. Deployment quality and motion paths of these dunes are main targets in wind erosion studies in deposit regions. These targets need the active and inactive dunes to be identified. ...  Read More

Autecology of Hedysarum Kopetdaghi in Golestan Province

Ghasem ali Abarsaji; Amr ali Shahmoradi; Sadegheh Zare kia

Volume 14, Issue 3 , January 2007, Pages 421-431

Abstract
  Autecology of plant species is an important portion of ecological studies in natural resources science. This study was conducted to investigate on autecology of Hedysarum kopetdaghi.  This range plant species is a perennial plant from Papilionaceae family that grows mostly in range ecosystems of ...  Read More

Differentiation of drylands cereal and rangelands with the assistance of remote sensing techniques

mahmood Goudarzi; Mahdi Farahpour

Volume 14, Issue 3 , January 2007, Pages 432-446

Abstract
  According to reports, the problem range managers face is impossibility of distinguish between dry land farming and the rangeland, as the reflectance between dry land farming and rangeland are the same. One solution is usage of temporal images, i.e. times that reflectance between these two features is ...  Read More