How to measure DBH?

Measure the diameter of trees at 1.3m above the ground with standard measuring tools, such as a tree diameter measuring ruler.

Brief introduction of tree DBH ruler: You can measure the diameter, perimeter and specifications of trees, and the values read around the trunk are the perimeter and the diameter corresponding to the perimeter.

Related words:

1.DBH: DBH, only used for measuring trees.

2. Ground diameter: also known as base diameter, refers to the diameter of soil traces. Some requirements are 10cm above the ground.

3. Crown diameter: refers to the diameter of shrubs and vertical projection surfaces of shrubs.

4. Meter diameter: refers to the diameter at the ground 1 meter.

5. Measurement requirements:

A set of vertical cross data should be measured, but it is not necessary to measure DBH below 5 cm. If trees grow on a slope, they should be measured from the upper part of the slope to the breast height. If the height of the measured tree is scarred or bifurcated, which can't reflect the situation of the standing tree normally, you can find another normal part to measure the trunk diameter up or down, but you must record the height of the measurement place for data analysis.

Extended data:

Due to the different heights of people, in order to make the measurement points consistent, the specific height of chest height is uniformly stipulated within a country, but it is not consistent in different countries. In China and most countries, the breast height is set at1.3m above the ground. This standard height is more convenient for ordinary adults to measure readings with a wheel ruler.

The concept of DBH (abbreviated as DBH, abbreviated as DBH) was introduced to China from European countries (non-Japan and the United States), but the height of DBH measured by European countries and most Commonwealth countries is 4 feet 3 inches above the ground, 4 feet 3 inches = 4× 0.3048+3× 0.0254 = 1.25.