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Spatial aggregations parameters : Eritrea
This table synthesizes the area thresholds used to spatially aggregate
the land cover data base and the polygon count before and after
the aggregation:
ORIGINAL |
SPATIAL AGGREGATION
|
LC GROUP |
POLYGON-COUNT |
AREA THRESHOLD |
POLYGON-COUNT |
A11 & A23 - Cultivated Terrestrial
& Aquatic |
2695 |
< 125 ha |
1885 |
A12 - Natural Vegetation - Terrestrial
|
9474 |
< 140 ha |
6660 |
A24 - Natural Vegetation - Aquatic |
239 |
< 45 ha |
184 |
B15 - Artificial Surfaces |
160 |
< 25 ha |
108 |
B16 - Bare Areas |
1998 |
< 115 ha |
1450 |
B27 & B28 - Artificial & Natural
Water |
438 |
< 20 ha |
309 |
TOTAL POLYGONS |
15004 |
- |
10596 |
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You can also download
the table (pdf) containing the detailed comparison between the polygon
counts of the original and spatially aggregated data base. (If you
do not have Adobe Acrobat, use the right mouse button and save target
to your hardisk)
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