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Distinguishing Brush and Weeds on Rangelands Using Video Remote Sensing

Published online by Cambridge University Press:  12 June 2017

James H. Everitt,
David E. Escobar,
Mario A. Alaniz,
Ricardo Villarreal and
Michael R. Davis
James H. Everitt
Affiliation:
Remote Sensing Research Unit, Agr. Res. Serv., U.S. Dep. Agric., 2413 E. Hwy. 83, Weslaco, TX 78596-8344
David E. Escobar
Affiliation:
Remote Sensing Research Unit, Agr. Res. Serv., U.S. Dep. Agric., 2413 E. Hwy. 83, Weslaco, TX 78596-8344
Mario A. Alaniz
Affiliation:
Remote Sensing Research Unit, Agr. Res. Serv., U.S. Dep. Agric., 2413 E. Hwy. 83, Weslaco, TX 78596-8344
Ricardo Villarreal
Affiliation:
Remote Sensing Research Unit, Agr. Res. Serv., U.S. Dep. Agric., 2413 E. Hwy. 83, Weslaco, TX 78596-8344
Michael R. Davis
Affiliation:
Remote Sensing Research Unit, Agr. Res. Serv., U.S. Dep. Agric., 2413 E. Hwy. 83, Weslaco, TX 78596-8344
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Abstract

This paper describes the application of a relatively new remote sensing tool, airborne video imagery, for distinguishing weed and brush species on rangelands. Plant species studied were false broomweed, spiny aster, and Chinese tamarisk. A multispectral video system that acquired color-infrared (CIR) composite imagery and its simultaneously synchronized three-band [near-infrared (NIR), red, and yellow-green] narrowband images was used for the false broomweed and spiny aster experiments. A conventional color camcorder video system was used to study Chinese tamarisk. False broomweed and spiny aster could be detected on CIR composite and NIR narrowband imagery, while Chinese tamarisk could be distinguished on conventional color imagery. Quantitative data obtained from digitized video images of the three species showed that their digital values were statistically different (P = 0.05) from those of associated vegetation and soil. Computer analyses of video images showed that populations of the three species could be quantified from associated vegetation. This technique permits area estimates of false broomweed, spiny aster, and Chinese tamarisk populations on rangeland and wildland areas.

Keywords

False broomweed, Ericameria austrotexana M. C. Johnst. # EIMAUspiny aster, Aster spinosus Benth. # ASTSNChinese tamarisk, Tamarix chinensis Lour. # TAACHAirborne videocolor-infrared video imagerymultispectral narrowband video imageryconventional color video imageryEIMAUASTSNTAACH

Information

Type
Research
Information
Weed Technology , Volume 6 , Issue 4 , December 1992, pp. 913 - 921
Copyright
Copyright © 1990 by the Weed Science Society of America 

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