# Beech on dry sites, total aboveground dry biomass from DBH (Table 3)

Aboveground biomass equation for Fagus sylvatica, Germany, Switzerland, from Chakraborty et al. 2016. 66 trees, DBH 2–18 cm. Listed on Tree Allometrics, a free library of tree allometric equations, each quoted from the source that published it.

## Equation

As printed in Chakraborty et al. 2016 (Table 3, AB Dry row):

> AB Dry a 0.201 b 2.173 Adj-R² 0.94 N 66

Cite: https://treeallometry.org/equations/chakraborty-2016-dbh-agb/#equation

In this library's units, ready to compute (aboveground biomass in kg):

```
Aboveground biomass = 0.201 * D^2.173
```

Inputs: D = Diameter at breast height (1.3 m) (cm).
The source's own form: 0.201 * DBH^2.173, with DBH in cm; output in kg.
Cite: https://treeallometry.org/equations/chakraborty-2016-dbh-agb/#canonical

## What it covers

- Output: Aboveground biomass, kg
- Taxon: Fagus sylvatica (species), family Fagaceae; broadleaf
- Where: Five abandoned oak-coppice stands on dry south-facing sites, southern Germany and northern Switzerland. Cite: https://treeallometry.org/equations/chakraborty-2016-dbh-agb/#where
- Biomes: temperate
- Stand: natural
- Trees measured: 66. Cite: https://treeallometry.org/equations/chakraborty-2016-dbh-agb/#n_trees
- DBH range: 2–18 cm. Cite: https://treeallometry.org/equations/chakraborty-2016-dbh-agb/#dbh
- Method: power function regression, biomass = a * diameter^b (dry mass). Cite: https://treeallometry.org/equations/chakraborty-2016-dbh-agb/#method
- Verification: read in the original source
- Last checked: 2026-11-02. Cite: https://treeallometry.org/equations/chakraborty-2016-dbh-agb/#checked_at

A missing fit statistic is one the source doesn't state, or that we haven't recorded; it is never estimated. Outside the stated DBH range or region, the equation is an extrapolation.

## Source

Chakraborty, T., Saha, S., & Reif, A. (2016). Biomass equations for European beech growing on dry sites. iForest, 9(5), 751-757.

- DOI: https://doi.org/10.3832/ifor1881-009
- Access: open access
- Copy we read: https://iforest.sisef.org/pdf/?id=ifor1881-009
- Every equation from this source: https://treeallometry.org/sources/chakraborty-2016/
- Cite: https://treeallometry.org/equations/chakraborty-2016-dbh-agb/#source

## The facts, in the source's words

**Equation** (Table 3, AB Dry row):

> AB Dry a 0.201 b 2.173 Adj-R² 0.94 N 66

Cite: https://treeallometry.org/equations/chakraborty-2016-dbh-agb/#equation

**Trees measured** (Table 3, AB Dry row):

> N 66

Cite: https://treeallometry.org/equations/chakraborty-2016-dbh-agb/#quote-fit-n-trees

**Smallest DBH** (Materials and methods, Sampling design):

> The range of the DRC and DBH of 86 plants were 1.1-4.1 cm and 2-18 cm, respectively.

Cite: https://treeallometry.org/equations/chakraborty-2016-dbh-agb/#quote-fit-dbh-min-cm

**Our note:** Dry biomass in kg. Adjusted R2 as printed: 0.94. Includes leaves (AB is stem with bark plus branches including foliage).. Fitted on dry-site beech; the paper also gives fresh-biomass and log-transformed variants (not added).

## Checks this equation passes

On every build, the library's form and the source's own form (in its units) must both give these values within 1%.

| Inputs | Expected | We get | From |
| --- | --- | --- | --- |
| D = 5 | 6.64 | 6.64 | Computed from the printed form: computed from the published coefficients |
| D = 10 | 29.9 | 29.9 | Computed from the printed form: computed from the published coefficients |
| D = 15 | 72.3 | 72.3 | Computed from the printed form: computed from the published coefficients |

Cite: https://treeallometry.org/equations/chakraborty-2016-dbh-agb/#checks

The calculator on the page shows carbon as biomass × 0.47 (IPCC 2006 Guidelines, Vol. 4, Ch. 4, Table 4.3) and CO₂e as carbon × 44/12.

## How to cite

Cite the source for the equation: Chakraborty, T., Saha, S., & Reif, A. (2016). Biomass equations for European beech growing on dry sites. iForest, 9(5), 751-757. https://doi.org/10.3832/ifor1881-009

Cite this page for the record and checks: Tree Allometrics (Restoration Scope), "Beech on dry sites, total aboveground dry biomass from DBH (Table 3)", checked 2026-11-02, https://treeallometry.org/equations/chakraborty-2016-dbh-agb/. Data CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Quotes are the authors' words.

Data for this equation: https://treeallometry.org/data/equations/chakraborty-2016-dbh-agb.json
Report a problem: email info@restorationscope.com with the equation id (chakraborty-2016-dbh-agb) and where the right value appears.