NDLI: Monitoring the vernal advancement and retrogradation (green wave effect) of natural vegetation

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Monitoring the vernal advancement and retrogradation (green wave effect) of natural vegetation

Content Provider	NASA Technical Reports Server (NTRS)
Copyright Year	1973
Description	The author has identified the following significant results. Continued evaluation of autumnal phase and early vernal phase data indicate that the quality of ERTS-1 imagery over the Great Plains Corridor test sites are adequate to show relatively small temporal changes in the condition and quantity of vegetation at the several test sites. Vegetation changes measured from August through April are observable in reflectance changes recorded by ERTS-1. Vegetation changes due to grazing treatment and environmental conditions at the test sites are being monitored with ground data and ERTS-1 data, and appear adequate to complete all phases of the Great Plains Corridor investigation. NASA high flight aerial photography proved to be an indispensable tool for locating the Great Plains Corridor test sites on the computer derived grey maps of ERTS-1 digital data.
File Size	455125
Page Count	15
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19730016613
Archival Resource Key	ark:/13960/t8hf2m61h
Language	English
Publisher Date	1973-05-27
Access Restriction	Open
Subject Keyword	Geophysics Resources Management Earth Resources Program Vegetation Agriculture Rangelands Seasons Imagery Great Plains Corridor North America Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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