Sampling strategies in a forest environment for the elaboration of Isoscapes
DOI:
https://doi.org/10.30441/smart-elab.v12i0.203Keywords:
Sampling strategies, isoscapes, softwareAbstract
This document introduces a sampling technique especially developed for the field collection of soil and plant samples in a complex forest environment. The technique consists in the definition of a spiders’ web georeferenced lattice to be used as a reference frame on the field collection. The web lattice points are equally distributed in polar coordinates, thus providing a finer coverage of the central area, maintaining a good rate up to the boundary. Such a spatial distribution is specially suited to many geostatistical algorithms including the widespread Kriging or Inverse Distance Weighting, which are commonly used in the production of Isoscapes (isotopic abundances maps).
A dedicated application, Webnodes, has been developed for the production of web sampling lattices.
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