NDLI: Multiseasonal-multispectral remote sensing of phenological change for natural vegetation inventory. ph.d. thesis

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Multiseasonal-multispectral remote sensing of phenological change for natural vegetation inventory. ph.d. thesis

Content Provider	NASA Technical Reports Server (NTRS)
Copyright Year	1975
Description	The author has identified the following significant results. Variations in phenological development among plant species was noted, as well as the tendency for the seasonal appearance of some vegetation types to be dominated by the appearance of one or a few similarly developing species. Most of the common plants in the study area could be characterized by temporal aspects of their phenological development. There was a strong similarity among the spectral signatures of vegetation types in which the spectral return was dominated by green plant material. When the soil background dominated the spectral return from a vegetation stand, then the spectral radiance and the vegetation physiognomy were apparently related. When the deciduous shrubs lost their leaves, their spectral signature altered with a slight decrease of radiance in the visible wavelengths and a strong decrease in the near infrared. As the foliage of perennial grasses cured from August to November, its apparent green radiance remained unchanged, red radiance increased over 50 percent, and near infrared radiance decreased approximately 30 percent. A reflective mineral surface exhibited high radiance levels in all four bands, thus providing a marked contrast to the absorption characteristics of vegetation canopies.
File Size	31274159
Page Count	230
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19760018516
Archival Resource Key	ark:/13960/t2j72782x
Language	English
Publisher Date	1975-03-05
Access Restriction	Open
Subject Keyword	Earth Resources And Remote Sensing Inventories Multispectral Band Scanners Earth Resources Program Plants Botany Spectral Signatures Vegetation Multispectral Photography Maximum Likelihood Estimates Seasons Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Thesis

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