Data Biosphere GNV33

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Vegetation was originally to be derived from the UNESCO vegetation maps for the Mediterranean and the area south of the Sahara as well as the NOAA chlorophyl index imagery. However, careful inspection of the data indicated that the classifications, based largely on potential vegetation conditions, did not provide an adequate estimate of actual vegetative structure or crown cover. The vegetation patterning shown on the DMA topographic map sheets shows vegetation structure and average density for forest, tree savanna, and bunch grass. It was decided in conjunction with the FAO desertification coordinator to include the DMA vegetation information in the data base.

The DMA sheets originally at 1:2 million were photo reduced as color film transparencies and overlain by the FAO basemaps with attached matte film overlays. The vegetation patterns were traced and given a two digit code number. The first digit described the vegetation type and the second digit indicated drainage condition.

INUNDATED NOT INUNDATED OR RICE COLOUR CLASS CLASS COLOUR B R G B R G

0 0 10 11 FOREST 19 0 0 6 10 0 15 21 TREE SAVANNA 29 0 0 15 10 15 15 31 GRASSLAND 39 0 15 15 10 15 0 41 MANGROVES 49 0 15 0 15 15 10 51 MARSH/SWAMP 59 15 15 0 15 0 10 61 OASIS 69 10 0 0 3 7 5 91 OTHER 99 4 9 7 5 15 10 92 OTHER - RICE 10 0 0 88 WATER