Fichier:Daedelus comparison, remote sensing in precision farming.jpg

Fichier d’origine(540 × 883 pixels, taille du fichier : 143 kio, type MIME : image/jpeg)

Ce fichier et sa description proviennent de Wikimedia Commons.

Description
English: These three false-color images demonstrate some of the applications of remote sensing in precision farming. The goal of precision farming is to improve farmers’ profits and harvest yields while reducing the negative impacts of farming on the environment that come from over-application of chemicals. The images were acquired by the Daedalus sensor aboard a NASA aircraft flying over the Maricopa Agricultural Center in Arizona.
  • The top image (vegetation density) shows the color variations determined by crop density (also referred to as "Normalized Difference Vegetation Index", or NDVI), where dark blues and greens indicate lush vegetation and reds show areas of bare soil.
  • The middle image (water deficit) is a map of water deficit, derived from the Daedalus’ reflectance and temperature measurements. Greens and blues indicate wet soil and reds are dry soil.
  • The bottom image (crop stress) shows where crops are under serious stress, as is particularly the case in Fields 120 and 119 (indicated by red and yellow pixels). These fields were due to be irrigated the following day.
See also Precision Farming (Feature Article on earthobservatory.nasa.gov).
Date avant 30 janvier 2001
date QS:P,+2001-01-30T00:00:00Z/7,P1326,+2001-01-30T00:00:00Z/11
Source earthobservatory.nasa.gov (NASA Earth Observatory, Image of the Day 2001-01-30 "Precision Farming")
Auteur Susan Moran, Landsat 7 Science Team and USDA Agricultural Research Service (U.S. Government work)
Autorisation
(Réutilisation de ce fichier)
Public domain Ce fichier provient de la NASA. Sauf exception, les documents créés par la NASA ne sont pas soumis à copyright. Pour plus d'informations, voir la politique de copyright de la NASA.
Attention :
Autres versions
Image rotated by 90° to left.

Historique du fichier

Cliquer sur une date et heure pour voir le fichier tel qu'il était à ce moment-là.

Date et heureVignetteDimensionsUtilisateurCommentaire
actuel28 juin 2010 à 03:10Vignette pour la version du 28 juin 2010 à 03:10540 × 883 (143 kio)Bdk{{Information |Description={{en|These three false-color images demonstrate some of the applications of remote sensing in precision farming. The goal of precision farming is to improve farmers’ profits and harvest yields whi

Les 2 pages suivantes utilisent ce fichier :

Usage global du fichier

Les autres wikis suivants utilisent ce fichier :