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 69 (2016)
Volume 68 (2015)
Volume 67 (2014)
Volume 66 (2013)
Volume 65 (2012)
Volume 63 (2010)
Volume 62 (2009)
Evaluation of Spatial and Temporal Variability of the several datasets for precipitation over Iranian watersheds

Maryam Rostami; Ali Salajegheh; Forood Sharifi; Arash Malekian; TAYYEBEH MESBAHZADEH

Volume 75, Issue 2 , September 2022, , Pages 181-196


  AbstractPrecipitation plays an important role in climatic, water, energy and biogeochemical cycles. Several global and regional data sets currently provide historical estimates of this variable over Iran, including the MWEP and WFDEI forcing datasets and production of some institutions such as MOHC, ...  Read More

Predicting Net Primary Production of different Biomes of Jiroft Plain in the Face of Climate Change

saeed barkhori; elham rafiei sardooi; mohammadreza ramezani; ali azareh; maryam nasabpoor

Volume 73, Issue 3 , December 2020, , Pages 453-471


  One of the most important and main components of ecosystems is net primary production, which is an important index for assessing the ecosystems performance in the face of environmental changes. To this end, with regards to the importance of the subject, in this study, to quantify the climate change impacts ...  Read More

Determination of the relationship between variability of rangeland species forage yield and drought, to forecast forage production using meteorological drought indices

Khaled Osati; Hamed Joneidi; Nahid Azizi

Volume 73, Issue 2 , September 2020, , Pages 239-255


  Prediction of rangeland species forage yield is one of the most effective tools for planning and policymaking of natural resources in each country. Climate variables (precipitation and temperature) play an important role in forecasting rangeland species production. In the present study, the forages yields ...  Read More

Evaluation of Honey Bee Husbandry Suitability in Sarab-Sefid Borujerd by Geographical Information System

Golnaz Kheradmand; Ali Ariapour; Hamidreza Mehrabi

Volume 73, Issue 1 , June 2020, , Pages 75-88


  Honey bee husbandry is one of the multipurpose uses of rangelands that it affects by biotic and abiotic factors that investigated in this study for Sarab-Sefid rangeland of Borujerd County. To evaluation of honey bee husbandry suitability used FAO model include four main model plant cover, weather, topography ...  Read More

Investigation of the vegetation Cover Pattern Change Using MODIS Images and its Relation with Rainfall distribution

Abdolhosain Mohammadi; Reza Ghazavi; rohollah Mirzaei; Hamidreza Naseri

Volume 72, Issue 3 , December 2019, , Pages 843-852


  Rainfall is one of the most important factors affecting vegetation cover. Fluctuation and year-to-year variation of rainfall always affect vegetation cover patterns. The main aim of this study was to investigate and modeling the effects of rainfall changes on the variation of the vegetation cover in ...  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

Studying phenology stages Bromus tomentellus Boiss. Species in different years in Kordan rangelands of Alborz province

Ghader Karimi; Hasan Yeganeh; hasan barati

Volume 69, Issue 3 , December 2016, , Pages 699-709


  Rangelands have been composed of different plant species that emergence of phenological stages in every one of them will be influenced by environmental and genetic factors. In order to exploit the time and achieve acceptable performance in each plant species, it is necessary that the emergence of biological ...  Read More

Trend analysis of temperature and precipitation variability using homogenization time series(Case study: Khazar Region)

Mojtaba Nassaji zavareh; Ali Khorshiddoust; Ali Rasouli; Ali Salajegheh

Volume 69, Issue 3 , December 2016, , Pages 739-752


  Temperature and precipitation are among important atmospheric parameters for watershed planning. Assessment of temperature and precipitation trends is very important for future watershed planning. In this paper, trends of atmospheric parameters such as seasonal and annual temperature and precipitation ...  Read More