Tree species_site_key: tree species: DF = Douglas-fir, NS = Norway spruce; soil textures: Cl = clay, Sa = sand, Lo = loam, Si = silt; site: sequence of tree numbers within a soil texture corresponds to the sequence of sites within this soil texture

DBH: stem diameter at breast height [cm]

Height: tree height [m]

Crown length: length of green tree crown [m]

Columns 2000 to 2020: tree ring width in the years 2000 to 2020 [mm], values of the two cores per tree were averaged, in all cases: values of both cores were available

The values for DBH, Height and Crown length are based on measurements in March 2021.