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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.

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Showing 1 to 3 of 3 (0.076 seconds)

Spelling suggestions: "subject:"egetation dynamics -- arizona."" "subject:"egetation dynamics -- orizona.""

1

Use of the U.S. General Land Office survey notes for investigating vegetation change in southern Arizona

Stoiber, Philip Edwin, 1949- January 1973 (has links)
No description available.
Plant communities -- Arizona.
Vegetation dynamics -- Arizona.
2

Dynamics of a desert grassland range in relation to drought, fire and grazing

Sourabie, Kouana Martin January 1982 (has links)
No description available.
Vegetation dynamics -- Arizona.
Rangelands -- Arizona.
Droughts -- Arizona.
Grazing -- Arizona.
Grassland fires -- Arizona.
3

Detection of phenological change in cultivated and uncultivated vegetation with multispectral video

Kliman, Douglas Hartley, 1963- January 1987 (has links)
Multispectral video (MSV) images were used to measure phenological changes in cultivated and uncultivated vegetation communities surrounding the Palo Verde Nuclear Generating Station (PVNGS). Multispectral video imagery was acquired from aircraft on seven dates between the middle of June and the end of September, 1986. Images representing three sites near the PVNGS were selected to calculate Ratio Vegetation Index (RVI) values for seven surface cover types. Mean RVI values were tested sequentially for change, plotted as a function of time, and then compared to a moisture index and the crop calendar. MSV detected changes in cultivated vegetation corresponding to the crop calendar. Changes in natural vegetation and the non-vegetated cover types were also detected, but did not correlate to the moisture index. There is insufficient evidence to determine if detected changes in uncultivated vegetation were the result of phenological changes or electronic noise.

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