Enhanced woody biomass production in a mature temperate forest under elevated CO2

This data set reports tree growth and net primary productivity in response to experimentally elevated atmospheric CO2 concentration in the free-air CO2 enrichment (FACE) of the Birmingham Institute of Forest Research (BIFoR FACE). Data ae reported for a pre-treatment period (2010-2016) and from the onset of CO2 treatment (2017-2023). The BIFoR FACE experiment is located in central England (52.801°N, 2.301°W, 107 m above sea level) within a deciduous forest dominated by 180-year old Quercus robur L. trees, which represent 92% of the forest’s basal area. There are six experimental arrays of approximately 30 m diameter. Tree ring analysis was used to determine growth patterns within the arrays prior to the onset of CO2 treatment. The trees in three of the arrays have been exposed to elevated CO2 (ambient concentration + 150 ppm) during the growing seasons since 2017. Tree diameter was measured with manual dendrometers, and dry mass of oak trees was calculated using an allometric equation d..., All methods associated with the collection and processing of these data are described in: Norby RJ et al. 2024. Enhanced woody biomass production in a mature temperate forest under elevated CO2. Nature Climate Change., , # Data from: Enhanced woody biomass production in a mature temperate forest under elevated CO2

[https://doi.org/10.5061/dryad.z612jm6jw](https://doi.org/10.5061/dryad.z612jm6jw)

These data are internally consistent data products that have been subjected to quality checks and data management procedures. The provided data files are in comma separate format (csv):

BIFoR_tree_ring.csv

BIFoR_DMI.csv

BIFoR_litter.csv

BIFoR_NPP.csv

BIFoR_root_production.csv

BIFoR_TLS.csv

## Description of the data and file structure

**Data Dictionary: BIFoR_tree_ring.csv**

| Column number | Column name | Units | Description |
| :------------ | :------------------- | :------ | :----------------------------------------------------------------------------------------------------------------- |
| 1 | array |   | Arrays 2, 3, and 5 are in ambient CO2; arrays ...,