Volume 15 (2023)
Volume 14 (2022)
Volume 13 (2021)
Volume 12 (2020)
Volume 11 (2019)
Volume 10 (2018)
Volume 9 (2017)
Volume 8 (2016)
Volume 7 (2015)
Volume 6 (2014)
Volume 5 (2013)
Volume 4 (2012)
Volume 3 (2011)
Volume 2 (2010)
Volume 1 (2009)
Spatiotemporal Assessment of the Intensity, Duration, Frequency and Magnitude of the Drought by Using Remote Sensing Data

Maedeh Behifar; a.a Kakroodi; Majid Kiavarz; Farshad Amiraslani

Volume 13, Issue 1 , May 2021, , Pages 55-74

https://doi.org/10.52547/gisj.13.1.55

Abstract
  Drought is one of the most important natural disasters in the country, with devastating environmental and economic effects. Most drought studies have focused on drought severity and other drought characteristics have not been usually investigated. In this research, for the first time, the capability ...  Read More

Investigation of the saturation effect of vegetation indices in LAI estimation of crops

Maedeh Behifar; Mohsen Azadbakht; Farzaneh Hadadi; AliAkbar Matkan

Volume 11, Issue 1 , May 2019, , Pages 33-48

https://doi.org/10.52547/gisj.11.1.33

Abstract
  Vegetation indices are used to estimate vegetation parameters from satellite images. Despite their capabilities, performance of some vegetation indices decreases in high vegetation densities, making them inappropriate for estimation of the desired parameters. Vegetation indices are saturated in alfalfa ...  Read More

Alfalfa yield estimation using Sentinel-2 satellite images- a case study in Magsal Agricultural and Production Company (Qazvin)

Farzaneh hadadi; Mohsen m_azadbakht; Maedeh Behifar; Hamid Salehi Shahrabi; amir moeinirad

Volume 10, Issue 3 , January 2019, , Pages 53-76

Abstract
  Over the past several decades, many vegetation indices have been developed for crop yield estimation, each being sensitive to different levels of crop density and leaf area index, based on the bands and the algebraic formulas used in its design. However, the study of some perennial crops such as alfalfa, ...  Read More