Crop production intensity and haNDVI indicator – amplitude of NDVI related to harvest
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Date
2020
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Instytut Uprawy Nawożenia i Gleboznawstwa – Państwowy Instytut Badawczy w Puławach
Abstract
Description
In response to the growing needs of spatial recognition
of the intensity of agricultural crop production, a new haNDVI indicator
was developed, that measures the amplitude of the NDVI
indicator related to the harvest. The proposed way of calculating
haNDVI is to use the minimum and maximum functions for the
raster layers set from the growing season. This avoids the need
for preliminary classification of crops, including to determine the
moment of harvest. It has been shown that the haNDVI indicator
calculated on aggregated NDVI layers with a resolution of 1 km
is correlated with soil quality indexes, NPK fertilization intensity
(r = 0.69) and the share of crops in the total area (r = 0.86) for
municipalities. The properties of the haNDVI indicator make it
particularly useful for the initial, rapid scanning of environmental
quality in terms of the intensity of plant production and indicating
the hazards locations associated with the use of fertilizers and
plant protection products.
Keywords
remote sensing, NDVI, nitrogen fertilizers, Sentinel, MODIS
Citation
Polish Journal of Agronomy
2020, 42, 24–33