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- Normalized Difference Vegetation Index (NDVI) - NASA Earthdata
Vegetation indices are used to remotely examine vegetation over a given area One commonly-used index is the Normalized Difference Vegetation Index (NDVI), which uses the difference between near-infrared (NIR) and red reflectance from the Earth's surface, divided by their sum In healthy photosynthesizing plants, chlorophyll - the main pigment involved in photosynthesis - strongly reflects NIR
- Vegetation Index - NASA Earthdata
Vegetation indices measure the amount of green vegetation over a given area and can be used to assess vegetation health NASA’s Earth-observing satellites collect several different vegetation indices, including Normalized Difference Vegetation Index (NDVI), Enhanced Vegetation Index (EVI), Leaf Area Index (LAI), and Fraction of Photosynthetically Active Radiation (FPAR)
- Use Remote Sensing Data to Study Vegetation Dynamics
Overview Remote sensing data can be used to study vegetation dynamics, such as plant healthiness Like all objects, plants have unique spectral characteristics, and this information can be interpreted from remote sensing data to determine a plant’s condition
- Impacts of the Largest Dam in China on the Local Vegetation Cover
An increase in dense vegetation cover is observed in elevation zones 2 and 3 (175 to 775 meters) The authors attribute the change in vegetation cover type to a possible increase in local atmospheric moisture and resulting precipitation caused by the construction of the Three Gorges Dam and the rising of the Yangtze River
- Global Vegetation Greenness (NDVI) from AVHRR GIMMS-3G+, 1981-2022
Description This dataset holds the Global Inventory Modeling and Mapping Studies-3rd Generation V1 2 (GIMMS-3G+) data for the Normalized Difference Vegetation Index (NDVI) NDVI was based on corrected and calibrated measurements from Advanced Very High Resolution Radiometer (AVHRR) data with a spatial resolution of 0 0833 degree and global coverage for 1982 to 2022 Maximum NDVI values are
- MEaSUREs Vegetation Continuous Fields (VCF) Yearly Global 0 . . . - Earthdata
Fractional vegetation cover (FVC) is the ratio of the area of the vertical projection of green vegetation above ground to the total area, capturing the horizontal distribution and density of vegetation on the Earth's surface
- MODIS Terra Vegetation Continuous Fields Yearly L3 Global . . . - Earthdata
The MOD44B Version 6 Vegetation Continuous Fields (VCF) yearly product is a global representation of surface vegetation cover as gradations of three ground cover components: percent tree cover, percent non-tree cover, and percent non-vegetated (bare) VCF products provide a continuous, quantitative portrayal of land surface cover at 250 meter (m) pixel resolution, with a sub-pixel depiction of
- The Harmonized Landsat Sentinel-2 Project Releases Vegetation Indices
This suite of vegetation indices has a lot of applications, mainly in the area of agriculture, forest monitoring, vegetation health, and wildfire By providing change detection and monitoring capabilities at 30-meter spatial resolution every two to three days is extremely beneficial for agricultural applications, or really any type of phenological or seasonal vegetation monitoring
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