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 67 (2014)
Volume 66 (2013)
Volume 65 (2012)
Volume 63 (2010)
Volume 62 (2009)
Zoning of Hydrogeological Drought Severity in Arid Regions and It’s Relaion with Meteorological Drought(case study: Garmsar Plain)

Zahra Noori; Arash Malekian

Volume 76, Issue 2 , August 2023, , Pages 103-114


  Groundwater is important water resource supply, especially in arid and semi- arid regions. Increased utilization of the ground water aquifer leads to significant reduction in the storage of reservoirs. This study evaluates the hydrogeological drought in Garmsar plain using Groundwater Resource Index ...  Read More

Evaluating the Impacts of Climate fluctuations on wind processes (Case study: Abshirin ecosystem)

Farhad Hasani Dorabad; Naser Mashhadi; AmirReza Keshtkar

Volume 76, Issue 1 , June 2023, , Pages 77-101


  The desert environment is aeolian, being dominated by the wind. The dynamics of wind erosion are driven by both natural processes, including climate and its fluctuations, and human activity. Separating the climatic and anthropogenic causes of wind erosion can improve the understanding of its driving ...  Read More

Impact of meteorological drought on vegetation change trends in arid and semi-humid climates (HablehRood Watershed)

Ahmad Gillvare; Gholamreza Zehtabian; Hassan Khosravi; Hossein Azarnivand; Salman Zare

Volume 75, Issue 1 , June 2022, , Pages 103-117


  Due to the importance of vegetation cover in these areas, the aim of this study was to investigate the effect of drought, on vegetation of HablehRood watershed.Initially, NDVI index obtained from MODIS sensor was used to study vegetation cover and then SPI index based on rainfall data of two basins in ...  Read More

Identification of Vegetation-Vulnerable Areas to Drought Using Remote Sensing (Case study: Boushehr Province)

Fatemeh bahreini; Fatemeh Panahi; Mohammad Jafari; Arash Malekian

Volume 71, Issue 2 , September 2018, , Pages 341-354


  The complexity of drought phenomenon hinders our full understanding of its impact. Field sampling, Geographic Information Systems, SPI and NDVI, EVI and SAVI indices derived from 16-day interval MODIS images during 2000-2015 were used to better understand the effects of drought on vegetation In recent ...  Read More

Investigating the interaction of drought and contamination on species performance (Agropyron desertorum)

mahshid souri; khaled bayazidi; ehsan zandiesfahan; javad motamedi

Volume 71, Issue 1 , June 2018, , Pages 115-126


  Agropyron desertorum is the most important perennial grasses are semi-arid and temperate areas, which are recommended by natural resource experts to provide forage, pasture, soil stabilization and management of water resources. Awareness of the variation of rangeland species in different environmental ...  Read More

Comparing the performance of Artificial Neural Network (ANN) to predict the long term Meteorological Drought using Climatic Parameters and teleconnection (case study: South of Qazvin Province)

Fatemeh Maghsoud; Mohammad Reza Yazdani; Mohammad Rahimi; Arash Malekian; ali asghar zolfaghari

Volume 70, Issue 4 , January 2018, , Pages 1015-1030


  Overview, drought is effected an unusual dry period which is enough continued and causes imbalance in the hydrologic status, as depletion of surface water and groundwater resources. The purpose of this research is modeling meteorological drought prediction using Neural Network- Multi layer Perceptron, ...  Read More

Drought Monitoring Using Vegetation Index (NDVI) (Case study: Rangelands of Ilam Province)

Leila Fazel Dehkordi; Hossein Azarnivand; Mohammad Ali Zare Chahouki; Farhad Mahmoudi Kohan; Shahram Khalighi Sigaroudi

Volume 69, Issue 1 , June 2016, , Pages 141-154


  To identify an appropriate index for monitoring and evaluation of drought, rainfall data obtainedfrom meteorological stations of Ilam Province from 2000 to 2011 and MODIS satellite images with16-day intervals were collected and processed. The Standardized Precipitation Index (SPI) wascalculated based ...  Read More

Investigation on relation between rangelands production with effective climatic parameters and drought indices in Noudushan, Iran

samaneh Mohammadi Moghaddam; Abolfazl Mosaedi; Mohammad Jankju; Mansour Mesdaghi

Volume 68, Issue 1 , June 2015, , Pages 131-148


    Although precipitation is the most important factor which effects rangeland production, but there is little information on the relationship between production and the interactions of climatic factors and specially drought indices. .In this research, the relation between production and climatic ...  Read More

Application of Artificial Neural Networks in Simulating and Forecasting of Meteorological Drought Decile Percentage Index (Case study: Sistan & Balouchestan Province)

Arash Malekian; Mahrou Dehbozorgi; Amir Houshang Ehsani; Amir Reza Keshtkar

Volume 67, Issue 1 , May 2014, , Pages 127-139


  Consecutive droughts in Sistan and Baloochestan province cause water resources restriction and this isa very significant problem for this region. In this study, in order to forecast the drought cycle in 9climatological stations in the province, we used Artificial Neural Networks. The input data wereaverage ...  Read More

Assesment of the Standard Index of Annual Precipitation,Standardized Precipitation Index and Palmer Drought Severity Index in the Rangelands of Qom Province

Maryam Azarakhshi; Behnoush Farokhzadeh; Mohammad Mahdavi; Hossein Arzani; Hassan Ahmadi

Volume 65, Issue 2 , September 2012, , Pages 159-174


  Iran is located in dry belt of the earth and always involved with drought in different sections. Drought has already caused many losses to natural plant cover, agriculture and human society. For drought monitoring, we can use some drought indecies. In this research, the Standard Index of Annual Precipitation)SIAP),Sandardized ...  Read More

Statistical analysis of return period of drought conditions in Isfahan province using the Standardized Precipitation Index

S. Saadati; S. Soltani; S. eslamian

Volume 62, Issue 2 , October 2009, , Pages 257-270

  Drought is universal phenomenon that can occur everywhere and can cause harmful impacts on human beings and natural ecosystems. Thus, it is very important to study drought character ristics part of for water resources management. In this study, the Standardized Precipitation Index (SPI) is used for drought ...  Read More