Normalized Difference Vegetation Index


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Vegetation is a process of plants growth and development activity.

One of the most popular methods for vegetation level appraisal is Normalized Difference Vegetation Index (NDVI).

NDVI can be calculated using the following formula: NDVI=NIR-RED/NIR+RED, where NIR means near-infrared region reflection, RED - red region reflection. This correlation is based on different spectral features of chlorophyll in a visible and short-range IR range. Modern technology enable us to use objects spectral characteristics, results of textures and colours intensity analysis ; to develop indices and functions on basis of these features.

For a manual probing agrarians use such gadgets as Yara N-Tester, Trimble GreenSeeker and FieldScout. The price range for a gadget lays within $3-5 ths range.

For a automatic probing agrarians use such gadgets as Trimble GreenSeeker and Yara N-Sensor which can be installed on self-propelled agriculture machines. The price range for a gadget lays within $25-40 ths range.

For large agriculture facilities  becomes popular to use satellite crop monitoring. The vegetation level is calculated on the base of each pixel from satellite images. Each field analysis can by displayed as a digital vegetation map. The most popular service providers are Monitoring Agricultural Resources (Italy), Astrium-Geo (France), Cropio (USA/Germany), Vega (Russia).

Tags: vegetation, NDVI, NIR, IR, satellite, Cropio, Mapexpert,Vega, Yara N-Tester, Trimble GreenSeeker, FieldScout, Trimble GreenSeeker, Yara N-Sensor, Normalized Difference Vegetation Index, crop, monitoring

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