One obstacle for soil unit classification is that the supporting chemical data are completed
after the fieldwork is carried out. This means that field observations have to be later revised.
Another limitation is the rather few pit and auger analyses. With a total area of ca. 800 ha per
village and a total number of pits and auger samples of 26 there is roughly one analysis per 30
ha, equal to a mean distance of 300m between analysed points. This will of course limit the
resolution of produced maps, but might still be an appropriate and well-balanced approach
with reference to the programme objectives and resources. However, the risk is that SSLCC
over-interpret the data and produces maps with higher resolution than what is supported by
sampling intensity (see below section 4.2). In other words: the maps might not stand for what
they are promising and the real soil at a given point in the landscape might deviate from the
one in the map. In all scientific work like this the uncertainties should be stressed. Without
6
knowing the uncertainties the decision makers might come to wrong conclusions. It is
therefore advisable that the SSLCC in one or the other way describes uncertainties