Results 31 to 40 of about 97,221 (318)

Detection of Aquatic Plants Using Multispectral UAV Imagery and Vegetation Index

open access: yesRemote Sensing, 2020
In this study, aquatic plants in a small reservoir were detected using multispectral UAV (Unmanned Aerial Vehicle) imagery and various vegetation indices.
Bonggeun Song, Kyunghun Park
doaj   +1 more source

BRAZILIAN MIDWEST NATIVE VEGETATION MAPPING BASED ON GOOGLE EARTH ENGINE [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2020
Google Earth Engine (GEE) platform is an online tool, which generates fast solutions in terms of image classification and does not require high performance computers locally.
N. V. Estrabis   +6 more
doaj   +1 more source

Using UAV to Identify the Optimal Vegetation Index for Yield Prediction of Oil Seed Rape (Brassica napus L.) at the Flowering Stage

open access: yesRemote Sensing, 2022
Suitability of the vegetation indices of normalized difference vegetation index (NDVI), blue normalized difference vegetation index (BNDVI), and normalized difference yellowness index (NDYI) obtained by means of UAV at the flowering stage of oil seed ...
Vojtěch Lukas   +7 more
doaj   +1 more source

Estimation of the Normalized Difference Vegetation Index (NDVI) Variation for Selected Regions in Iraq for two Years 1990 & 2001 [PDF]

open access: yesمجلة جامعة الانبار للعلوم الصرفة, 2012
The Normalized Difference Vegetation Index (NDVI) is commonly used as a measure of land surface greenness based on the assumption that NDVI value is positively proportional to the amount of green vegetation in an image pixel area.
Ahmed Asaad Najeeb
doaj   +1 more source

Drought monitoring and its effects on vegetation and water extent changes using remote sensing data in Urmia Lake watershed, Iran

open access: yesJournal of Water and Climate Change, 2022
The assessment of drought hazards is important due to their socio-economic impacts on water resources, agriculture, and ecosystems. In this study, the effects of drought on changing water area and canopy of the Lake Urmia watershed in the northwest of ...
Jalil Helali   +9 more
doaj   +1 more source

Change Detection of Vegetation Cover by Ndvi Technique Using Geographic Information Systems (Gis) and Remote Sensing Technology in the Agricultural Region of Al_Wafra, Southern Part of Kuwait [PDF]

open access: yesInternational Journal of Advanced Humanities Research, 2023
This study aims to calculate the change detection method used NDVI in vegetation cover of agricultural crops in the Al-Wafra agricultural area using the main index, NDVI - Normalized Difference Vegetation Index. This index was used to measure the area of
Intessar Shalaan
doaj   +1 more source

Vegetation NDVI Linked to Temperature and Precipitation in the Upper Catchments of Yellow River [PDF]

open access: yes, 2012
Vegetation in the upper catchment of Yellow River is critical for the ecological stability of the whole watershed. The dominant vegetation cover types in this region are grassland and forest, which can strongly influence the eco-environmental status of ...
Hao, F.   +4 more
core   +9 more sources

Detection of historical landscape changes in Lake Victoria Basin, Kenya, using remote sensing multi-spectral indices

open access: yesWatershed Ecology and the Environment, 2022
The Kenyan Lake Victoria basin has been experiencing land degradation and overexploitation as seen in various landscape changes. Quantifying and understanding the nature of these changes is essential for management decision-making.
Dancan O. Onyango, Stephen B. Opiyo
doaj   +1 more source

Evaluation of pre/post-fire differenced spectral indices for assessing burn severity in a Mediterranean environment with landsat thematic mapper [PDF]

open access: yes, 2011
In this study several pre/post-fire differenced spectral indices for assessing burn severity in a Mediterranean environment are evaluated. GeoCBI (Geo Composite Burn Index) field data of burn severity were correlated with remotely sensed measures, based ...
Goossens, Rudi   +3 more
core   +2 more sources

Monitoring vegetation dynamics using multi-temporal Normalized Difference Vegetation Index (NDVI) and Enhanced Vegetation Index (EVI) images of Tamil Nadu

open access: yesJournal of Applied and Natural Science, 2023
Vegetation indices serve as an essential tool in monitoring variations in vegetation. The vegetation indices used often, viz., normalized difference vegetation index (NDVI) and enhanced vegetation index (EVI) were computed from MODIS vegetation index ...
M. Priya   +8 more
semanticscholar   +1 more source

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