Results 11 to 20 of about 36,292 (261)
Evaluation and Normalization of Topographic Effects on Vegetation Indices [PDF]
Remote Sensing, 2020 The normalization of topographic effects on vegetation indices (VIs) is a prerequisite for their proper use in mountainous areas. We assessed the topographic effects on the normalized difference vegetation index (NDVI), the enhanced vegetation index (EVI), the soil adjusted vegetation index (SAVI), and the near-infrared reflectance of terrestrial ...
Aleixandre Verger, , Guoxiang Liu
exaly +4 more sources
Effects of Pansharpening on Vegetation Indices [PDF]
ISPRS International Journal of Geo-Information, 2014 This study evaluated the effects of image pansharpening on Vegetation Indices (VIs), and found that pansharpening was able to downscale single-date and multi-temporal Landsat 8 VI data without introducing significant distortions in VI values.
Brian Johnson
doaj +2 more sources
Rapid Identification of Main Vegetation Types in the Lingkong Mountain Nature Reserve Based on Multi-Temporal Modified Vegetation Indices [PDF]
Sensors, 2023 Nature reserves are among the most bio-diverse regions worldwide, and rapid and accurate identification is a requisite for their management. Based on the multi-temporal Sentinel-2 dataset, this study presents three multi-temporal modified vegetation ...
Wenjing Fang +4 more
doaj +2 more sources
Egyptian Journal of Remote Sensing and Space Science, 2011 Quantitative estimation of canopy biophysical variables are very important in different studies such as meteorology, agriculture and ecology, so knowledge of the spatial and temporal distribution of these variables would be highly beneficial.
Alireza Sharifi, Behzad Rayegani
exaly +3 more sources
Remote Sensing, 2012 Several studies in the past have examined the spectral capability of multispectral and hyperspectral imagery for the identification of crop marks, while recent studies have applied different vegetation indices in order to support remote sensing ...
Athos Agapiou +2 more
exaly +3 more sources
Assessing the Robustness of Vegetation Indices to Estimate Wheat N in Mediterranean Environments
Remote Sensing, 2014 Remotely sensed vegetation indices have been extensively used to quantify plant and soil characteristics. The objectives of this study were to: (i) compare vegetation indices developed at different scales for measuring canopy N content (g∙N∙m−2) and ...
Glenn Fitzgerald +2 more
exaly +3 more sources
Agriculture, 2023 Vegetation indices provide information for various precision-agriculture practices, by providing quantitative data about crop growth and health. To provide a concise and up-to-date review of vegetation indices in precision agriculture, this study focused
Dorijan Radočaj +3 more
doaj +1 more source
MONITORING THE VEGETATIVE STATE OF COFFEE USING VEGETATION INDICES
Engenharia AgrícolaVegetation indices are a quick and practical alternative for monitoring crops due to the availability of satellite images on various platforms for free, allowing a quick analysis of the vegetative state of the crop and interventions in the field in case ...
Vitor Chedid +2 more
doaj +3 more sources
Agriculture, 2022 The aim of the study was to evaluate the effect of various fertilization treatments, including nitrogen, potassium and phosphorus fertilization, in long-term experiments for selected UAV (unmanned aerial vehicle)-derived spectral vegetation indices (NDVI—
Elżbieta Wójcik-Gront +2 more
doaj +1 more source
VEGETATION INDICES FOR IRRIGATED CORN MONITORING [PDF]
Engenharia Agrícola, 2020 Monitoring of large agricultural lands is often hampered by data collection logistics at field level. To solve such a problem, remote sensing techniques have been used to estimate vegetation indices, which can subsidize crop management decision-making ...
Francisco C. G. Alvino +4 more
doaj +1 more source