TY - JOUR
T1 - Characteristic spectral reflectance of a semi-arid environment
AU - Pinker, R. T.
AU - Karnieli, A.
N1 - Funding Information:
Acknowledgments The work of R. T. P. is supported by grants NAG5-914 from the National Aeronautics and Space Administration, Earth Science and Space Administration, Earth Science and Applications, Climate Research Program and grant NA16RC0113-01 from NOAA/Climate and Global Change Program. We wish to thank the granting agencies, Drs J. alterman, and S. Goward for helpful comments, T. Mulhern for assistance with the Spectron Engineering SE-590 Spectroradiometer, Dr M. V. Chien and Ch.-Ch. Chang for their assistance' with data processing.
PY - 1995/5/10
Y1 - 1995/5/10
N2 - Comprehensive information on the spectral reflectivity of several desert habitats and of dominant desert vegetation are presented. No previous high resolution spectral reflectance measurements were made in this semi-arid Sahara-Arabian phytogeographic zone. Due to the relative homogeneity of the region, in terms of terrain type and comprehensive sampling, the local scale surface albedo was estimated to be about 30-33 per cent. It was also possible to revisit the currently accepted hypothesis on the observed contrasts in surface reflectivity between protected and overgrazed areas. It seems that anthropogenic activities, which prevent the accumulation of crust or destroy an existing crust, rather than the overgrazing mechanism itself, are the main reasons for the sharp contrast between the protected and overgrazed surfaces.
AB - Comprehensive information on the spectral reflectivity of several desert habitats and of dominant desert vegetation are presented. No previous high resolution spectral reflectance measurements were made in this semi-arid Sahara-Arabian phytogeographic zone. Due to the relative homogeneity of the region, in terms of terrain type and comprehensive sampling, the local scale surface albedo was estimated to be about 30-33 per cent. It was also possible to revisit the currently accepted hypothesis on the observed contrasts in surface reflectivity between protected and overgrazed areas. It seems that anthropogenic activities, which prevent the accumulation of crust or destroy an existing crust, rather than the overgrazing mechanism itself, are the main reasons for the sharp contrast between the protected and overgrazed surfaces.
UR - http://www.scopus.com/inward/record.url?scp=0029472750&partnerID=8YFLogxK
U2 - 10.1080/01431169508954480
DO - 10.1080/01431169508954480
M3 - Article
AN - SCOPUS:0029472750
SN - 0143-1161
VL - 16
SP - 1341
EP - 1363
JO - International Journal of Remote Sensing
JF - International Journal of Remote Sensing
IS - 7
ER -
