Results 1 to 10 of about 110,156 (248)

Evaluation of vegetation cover using the normalized difference vegetation index (NDVI) [PDF]

open access: goldRevista Ambiente & Água, 2013
Soil loss by water erosion is the main cause of soil degradation in Brazil. However, erosion can be reduced by the presence of vegetation. The Normalized Difference Vegetation Index (NDVI) makes it possible to identify the vegetative vigor of crops or ...
Gabriela Camargos Lima   +6 more
doaj   +4 more sources

Drought Monitoring With Spectral Indices Calculated From Modis Satellite Images In Hungary [PDF]

open access: yesJournal of Environmental Geography, 2015
In this study a new remote sensing drought index called Difference Drought Index (DDI) was introduced. DDI was calculated from the Terra satellite’s MODIS sensor surface reflectance data using visible red, near-infrared and short-wave-infrared spectral ...
Gulácsi András, Kovács Ferenc
doaj   +4 more sources

Mapping and Attributing Normalized Difference Vegetation Index Trends for Nepal [PDF]

open access: yesRemote Sensing, 2017
Global change affects vegetation cover and processes through multiple pathways. Long time series of surface land surface properties derived from satellite remote sensing give unique abilities to observe these changes, particularly in areas with complex ...
Nir Y. Krakauer   +2 more
doaj   +2 more sources

Declining Effect of Precipitation on the Normalized Difference Vegetation Index of Grasslands in the Inner Mongolian Plateau, 1982–2010

open access: yesApplied Sciences, 2021
Grasslands play an irreplaceable role in maintaining carbon balance and stabilizing the entire Earth’s ecosystem. Although the grasslands in Inner Mongolia are sensitive and vulnerable to climate change, a generalized effect of climate change on the ...
Yanan Li   +3 more
doaj   +3 more sources

Mapping of the normalized difference vegetation index in cotton field

open access: yesPesquisa Agropecuária Tropical, 2012
The remote sensing data obtained at field level can provide detailed information about the variability of biophysical parameters related to yield over large areas, and present potential for monitoring these parameters throughout the crop development ...
Anamari Viegas de Araujo Motomiya   +3 more
doaj   +3 more sources

Connection between normalized difference vegetation index and yield in maize [PDF]

open access: yesPlant, Soil and Environment, 2016
The preliminary estimation of expected yields and the accuracy of this evaluation provide information for decisions related to the harvest. The quantification of predictions makes it possible to estimate the accuracy of the prognosis. The yields that can
T. Spitkó   +6 more
doaj   +2 more sources

Validation of the normalized difference vegetation index as a measure of neighborhood greenness. [PDF]

open access: yesAnn Epidemiol, 2011
To assess the validity of a Geographic Information Systems (GIS) measure, the Normalized Difference Vegetation Index (NDVI), as a measure of neighborhood greenness for epidemiologic research.Using remote-sensing spectral data, NDVI was calculated for a 100-m radial distance around 124 residences in greater Seattle.
Rhew IC   +4 more
europepmc   +4 more sources

Relationship between biophysical parameters and Normalized Difference Vegetation Index in maize

open access: diamondJournal of Agrometeorology, 2013
A field experiment was conducted for two years during kharif season at ARI farm, Rajendranagar, Hyderabad to study the spectral reflectance pattern of maize crop and its relationship with biophysical parameters like Leaf Area Index (LAI), stover yield ...
G. JAYASREE   +3 more
doaj   +3 more sources

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