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)
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

Grazing effects on the relationship between vegetation canopy cover and above-ground phytomass with vegetation indices in Sabzekouh region, Chaharmhal va Bakhtiari

Reza Omidipour; Ataollah Ebrahimi; Pejman Tahmasebi; Marzban Faramarzi

Volume 73, Issue 1 , June 2020, , Pages 33-47


  Vegetation canopy cover (VCC) and Above-Ground Phytomass (AGP) are the most important indicators of rangeland ecosystem’s structure and function, therefore their accurate evaluation and monitoring is vital for ecosystem welfare. Vegetation indices, are essential tools for assessing and monitoring ...  Read More

Monitoring and Predicting of Land Use Changes in Farsan Watershed Using LCM

Sina NabiZadeh; Ataollah Ebrahimi; Masoumeh Aghababaei; Iraj Rahimi

Volume 72, Issue 1 , June 2019, , Pages 263-278


  The land use of the watersheds is one of the most affected and highly vulnerable due to developmental process which effect on the other variables such as the hydrological function. The purpose of this research is to monitor land use changes in the past and to investigate predictability of its future ...  Read More

Comparison of the existing and RS geological maps (Case study: Vartavan catchment)

jamal mosaffaie; mohammad reza ekhtesasi; Amin Saleh pourjam

Volume 70, Issue 4 , January 2018, , Pages 1005-1013


  Study of geological units is one of the basic studies in many different sciences such as natural resources. The use of geological maps produced by geological survey is now the basic of geological studies in detailed-operating and investigative studies of natural resources. On the other hand, during the ...  Read More

Comparison of three methods of vegetation/land cover mapping, including remote sensing, Physiographic and Geomorphologic

shahrebanoo rahmani; Ataollah Ebrahimi; alireza davoudian

Volume 70, Issue 3 , December 2017, , Pages 661-68


  In this study, three methods were evaluated for vegetation mapping. For remote sensing method, in addition to IRS data of LISSIII, Ddigital Elevation Model (DEM) and Normalized Difference Vegetation Index (NDVI) were used for classification of 14 classes of land covers mostly vegetation types using a ...  Read More

Evapo-transpiration estimation in Taleghan Drainage Basin using MODIS images and SEBAL model

kazem Nosrati; Mohsen Mohseni Saravi; Hasan Ahmadi; Hosein Aghighi

Volume 68, Issue 2 , September 2015, , Pages 385-398


  Estimation of evapo-transpiration is necessary in cases such as irrigation planning, determining of evaporation of the water bodies, water balance assessment, estimation of runoff and watershed management and ecological and meteorological studies. Evapo-transpiration can be determined precisely using ...  Read More

Study of Flight Height and Spatial Resolution of Aerial Photography in Estimating Canopy Cover Percentage of Shrub Lands

Molouk Royan; Adel Sepehri; Abdolrasoul Salman Mahini

Volume 65, Issue 3 , December 2012, , Pages 351-359


  Remote sensing and aerial photographs are used to produce medium to small scale images. However, for detailed information especially to estimate rangeland vegetation canopy cover there is a need to larger scale images. It is therefore necessary to study the technical applicability of different devices ...  Read More

Evaluation of Vegetation Indices for Preparing Vegetation Cover Percentage in Semi-arid Lands of Central Iran (Case Study: Ghareh Aghaj Watershed)

Fazel Amiri; Hassan Yeganeh

Volume 65, Issue 2 , September 2012, , Pages 175-189


  فرآیند ارزیابی پوشش گیاهی به وسیلة تصاویر ماهواره‌ای نیازمند استفاده از شاخص‌های گیاهی است. شاخص گیاهی بطور گسترده‌ای برای ارزیابی و پایش تغییرهای بو شناختی (اکولوژیک) ...  Read More

An Investigation of the Population Changes on Relationship with Landuse Changes (Case study: Upland watershed of Taleghan)

M Ghorbani; A.A Mehrabi; M Servati; A.A Nazari Samani

Volume 63, Issue 1 , June 2010, , Pages 75-88

  Nowadays, population growth and on the other hand resources limitations astonish authorities. Population changes cause variation in economic activities and land use changes. As a whole, overusing, improper land use and human disturbances over natural resources make environmental imbalances worse. In ...  Read More