Environmental Data: Calibration data for empirical mortality models of...

Description

The dataset comprises > 90 000 records from inventories in 54 strict forest reserves in [Switzerland](https://www.wsl.ch/de/wald/biodiversitaet-naturschutz...

Citation

Hülsmann, L., Bugmann, H., Cailleret, M., Brang, P., Meyer, P. (2017). Calibration data for empirical mortality models of 18 European tree species. EnviDat. https://www.doi.org/10.16904/envidat.27.

Resources

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Calibration data
A set of three consecutive inventories was used to generate records for the calibration of mortality models based on trees that were alive in the first and second inventory and either dead or alive in the third inventory. ## Meta data __Reserve:__ Name of the forest reserve __Plot:__ Permanent plot number ## Tree data __Species:__ Latin species name (or species group, cf. _Quercus_ spp.) __y:__ Status of the tree with 0 = alive and 1 = dead __dt:__ Length of the mortality period (years) __DBH:__ Diameter at breast height (mm) of the second inventory __relBAI:__ Annual relative basal area increment (-) calculated based on the first and the second DBH measurement as the compound annual growth rate of the trees basal area ## Stand data _All stand variables were calculated for the second inventory._ __mDBH:__ Mean diameter at breast height (mm) __iqrDBH:__ Interquartile range of diameter at breast height (mm) __BA:__ Basal area per hectare (m2 ha-1) __N:__ Number of trees per hectare (ha-1) ## Climate data _Both climate variables were calculated for the period between the second and the third inventory._ __P:__ Mean annual precipitation sum (mm) __mT:__ Mean annual air temperature (°C)
Calibration data