Abstract
ABSTRACT Soils are the interface of streams of matter and energy. In the modern world, they are constantly under man-made pressure, not least from pollution, so we need to monitor their status. If we know the points of impact, we can model the flows of solid particles and salts in solution, predict the trajectory of pollutants and, thereby, reduce the number of samples needed in a monitoring scheme. This is especially useful in areas of subdued relief where it is hard to see the zones of concentration. Sampling points may be selected according to accumulative surface curvature that separates shedding zones from the receiving zones where sampling should be concentrated. The cartographic model clearly indicates the zones of concentration and, so, minimises the chance of sampling the wrong places.
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