Stratified random sampling is a method of sampling that divides a population into smaller groups that form the basis of test samples.

Within a survey of mountain forest types in the Swiss Alps, we compared three statistical sampling methods, i.e. stratified random sampling of the investigation area, systematic sampling and ...

A flexible sampling model is outlined for use in a spatial context. The new method is designed to distribute the available samples in such a way that areas of greatest vegetational heterogeneity are ...