Kerroslukua

Kerroslukua is a Finnish term that translates to "layer number" or "stratification number." It is most commonly used in geology and soil science to describe the distinct layers within a soil profile or a geological stratum. Each layer, or horizon, is typically distinguished by differences in physical characteristics such as color, texture, structure, and chemical composition.

In soil science, kerroslukua refers to the sequential numbering of these soil horizons, starting from the surface. For example, the uppermost organic layer might be designated as layer 1, followed by the topsoil as layer 2, the subsoil as layer 3, and so on, down to the parent material. The specific numbering system and the terminology for each layer can vary depending on the classification system being used, such as the Finnish soil classification system or international standards.

Understanding the kerroslukua is crucial for various applications. In agriculture, it helps in assessing soil fertility, drainage, and suitability for different crops. In construction and engineering, it informs decisions about foundation design and excavation. Geologists use it to understand the processes of soil formation, erosion, and deposition, as well as to reconstruct past environmental conditions. The distinctiveness of each layer within the kerroslukua provides valuable clues about the history and development of the land.