Species composition Percentage Pixel radiance values 
canopy cover in MSS 5 for vegetation 
classes (figure 2) 
  
i) Dwarf shrubland with 0 68-80 
Indigofera species 
dominant and Aristida 
  
  
grassland 
ii) Shrubland with Acacia 0-20 58-68 
reficiens dominant combined 
with dwarf shrubland and 
grassland 
iii) e 20-40 50-58 
iv) " 40-60 43-50 
v) " 60-80 38-43 
vi) " 80-100 27-38 
T 
TABLE 1. VEGETATION CLASSES AND PIXEL RADIANCE VALUES of Lanc 
region 
stronge 
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Graetz, R.D., M.R Gentle, R.P.Peach, and J.F.0'Callaghan,1982. 
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ACKNOWLEDGEMENTS 
The authors wish to thank the UNESCO Integrated Project for T 
Arid Lands (IPAL), Nairobi, for their support in the field; the accurat 
Natural Environment Research Council (NERC), for the loan of regions 
image analysis equipment at the Experimental Cartography Unit and vis 
(ECU), and the Overseas Development Administration (ODA) for develop 
financial support towards the cost of image processing at the Canada 
National Remote Sensing Centre, Royal Aircraft Establishment, et al. 
Farnborough. capable 
(Ryerso 
generat 
elsewhe 
these n 
similar 
T 
adopted 
In the 
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