m a Tie E 
  
  
  
TABLE 3. CLASSIFICATION FOR BAKOLORI AREA — DRY SEASON, 1384 
Pixels % Total 
1.U Settlements 827 0.42 
2.0 Water Bodies 7,414 3.73 
3.0 Wetlands 4941 1.68 
3.1 Vegetated (3,962 1.19) 
3.2 Non-vegetated ( 979 0.49) 
4,0 Intensive Agriculture 98,928 49.70 
4.1 Natural fadama (7,790 3.91) 
4.2 Rice (10,966 5.51) 
4.3 Sugar Cane ( 135 0.07) 
4.4 |rrigated fadama — intercropped ( 6,229 3.13) 
4.5 Rain-fed cultivation (Rain-fed Wet) (73808 37.08) 
5.0 Low intensity Agriculture (Rain.fed Dry) 27,205 13.67 
6.0 Shrubland and Grasses . 35,501 17.84 
7.0 Wooded Shrubland and Thicket 13,479 6.77 
8.0 Non-agricultural Bare Surface ' 10,761 et 5.41 
8.1 Sandy and Hardpan Surfaces (10,111 ; 5.08) 
8.2 Lateritic and Rocky Surfaces ( 850 — 0.33) 
9.0 Burned Areas a 0 ' d + 0.00 
The fourth stage oh change detection Studie This work has been concentrated in the 
Bakolori area, using data from 1975 and 1984. Several enhancement techniques have been tested 
to determine the most appropriate methods for identifying change. These have been combined 
with classification procedures to measure the amount of change in different land use/cover cate- 
gories, This aspect of the study forms the major part of a Master's thesis being prepared by. Plon 
{ 1986). 
The final stage is s field checking of the results of the supervised classifications. At the time "n 
writing, this phase has yet to be undertaken, so that the results presented below must be cons 
idered preliminary. - 
LAND USE/CO VER MAPPING 
The land use/cover classification developed for the Bakolori irrigation area (Table 3) may be 
compared with that identified during field interviews with the farmers (Table 4). It is clear that 
farmers divide cultivated land on the basis of flooding and soils. However, they can identify the 
crops which they commonly grow on the various soils, and to that extent, it is a land-use classifi- 
cation. Uncultivated land is classified by cover, use and potential use. Class 1.0 in this scheme 
broadly matches Classes 3.0 through 4.4 of the supervised classification; class 2.0 equates with 
Classes 4.5 and 5.0, and Class 3.0 with classes 5.0 through 8.2. The class ''Y ashi/Rairai"", which 
may be found in either fadama or tudu, would probably be placed in classes 3.2 or 8.1 of the 
supervised classification based on dry season imagery, although when found in the fadama, it 
is used for the dry season planting of cassava. 
    
    
  
  
  
   
  
    
  
    
   
   
   
   
   
  
   
  
  
   
   
  
  
  
    
  
  
  
  
  
  
  
  
  
  
   
  
  
  
    
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