The application of a geometric optical canopy reflectance model to semiarid shrub vegetation

Janet Franklin, Debra L. Turner

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

The Li-Strahler canopy model was tested, using SPOT HRV XS imagery, for semiarid shrub vegetation, based on 26 small (1-ha) sites in five classes of shrub vegetation, two dominated by tarbush, one by creosote bush, and two by mesquite. The model was driven by reflectance values derived from June and September imagery. While predictions of crown size and density for individual sites had a large average error of 35%, the predictions of shrub size and density were reasonably accurate when grouped by shrub class. The aggregated predictions for a number of stands within a class were accurate to within one or two standard errors of the observed average value. Accuracy was highest but predictions were biased for some classes (size was underestimated) when the nonrandom shrub pattern was characterized for the class based on the average coefficient of determination of density.

Original languageEnglish (US)
Pages (from-to)293-301
Number of pages9
JournalIEEE Transactions on Geoscience and Remote Sensing
Volume30
Issue number2
DOIs
StatePublished - Mar 1992
Externally publishedYes

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canopy reflectance
canopies
vegetation
shrub
reflectance
prediction
predictions
Creosote
imagery
SPOT (French satellite)
creosote
SPOT
canopy
coefficients

ASJC Scopus subject areas

  • Computers in Earth Sciences
  • Geochemistry and Petrology
  • Geophysics
  • Electrical and Electronic Engineering

Cite this

The application of a geometric optical canopy reflectance model to semiarid shrub vegetation. / Franklin, Janet; Turner, Debra L.

In: IEEE Transactions on Geoscience and Remote Sensing, Vol. 30, No. 2, 03.1992, p. 293-301.

Research output: Contribution to journalArticle

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