Читать книгу Laboratory Methods for Soil Health Analysis, Volume 2 - Группа авторов - Страница 27

Stratified random sampling applies simple random sampling to preselected subareas of a site (Table 2.3). This design requires knowledge of site characteristics to accurately identify the location, extent, and boundary of subareas. This sampling design is most useful at sites with clearly defined soil, landscape, management, and/or contamination zones (Dick et al., 1996).

Assessing soil health indicators within defined subareas will provide a more complete understanding of inherent and/or management‐induced variation. The drawback of this sampling design is a corollary to its strength, since subarea stratification will require more resources than simple random sampling.