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In an agricultural context, land evaluation is assessment for a specified kind
of land utilisation. The final result of agricultural evaluation is a map,
which partitions the landscapes into suitable and unsuitable areas for a
particular land-use of interest. However, this approach may not represent the
continuity of land. Land suitability could be better expressed by a fuzzy
approach. In this paper a fuzzy methodology is used to evaluate land
suitability in the Edgeroi district for various crops including barley,
dryland cotton, oats, pasture, soybean, sorghum, sunflower, and wheat. This is
achieved using a membership function to derive a land-suitability membership
score ranging from non-suitable (i.e. 0) to suitable (i.e. 1). We express this
as continuous land suitability maps using punctual kriging. An expression for
overall land suitability (i.e. its versatility) and its capacity with respect
to suitability to particular rotations is introduced to highlight the most
productive units of soil.
DOI: 10.1071/SR99087
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