TreeSense Wiki

The retention curve illustrates the relationship between water content and soil water potential. This relationship is characteristic of each soil type and is influenced by various factors. One of the most important factors is the pore size distribution. This is closely related to soil type, which is why it is common to specify typical retention curves for different soil types. The figure shows retention curves for sand, silt […]

Ein Boden setzt sich aus mineralischen Partikeln unterschiedlicher Größe zusammen. Je nach Partikelgröße werden drei Größenklasssen unterschieden: Ton (< 0,002 mm), Schluff (0,002 – 0,063 mm) und Sand (0,063 – 2 mm). Bei einer Partikelgröße über 2 mm spricht man von Grobboden. Die relativen Anteile von Sand, Schluff und Ton lassen sich im sogenannten Bodenartendreieck […]

When we talk about soil moisture, we are referring to the water content. This indicates how much water is present in the soil. Water content can be expressed in two different ways. The volumetric water content is the ratio of the volume of water to the total volume of the soil sample. The gravimetric water content is the ratio of the mass of water to the mass of the dry […]

A dendrometer is a scientific measuring instrument used to measure trunk diameter or trunk circumference over time. It is an essential tool in forestry, ecology, and climate research. A classic application is measuring a tree’s annual growth. This is often done using diameter tapes or mechanical band dendrometers with an accuracy of […]

As part of a project to plant young trees in the Munich metropolitan area, the Schernthaner company handled the watering. Typically, the company waters the trees once a week during the summer months, using about 100 liters per tree (based on FLL: Recommendations for Tree Plantings, Part 1). In collaboration with TreeSense, the watering regimen was to be optimized this time. Through the use of sensors […]

As a general rule, dry wood is a very poor conductor of electricity. Water, on the other hand, in which nutrients and salts are dissolved, conducts electricity very well. Pure (distilled) water is also a poor conductor. To measure the moisture content in a tree, we take advantage of precisely this relationship. The electrical resistance is measured between two electrically conductive screws […]