Functional traits and growth rate of 33 broad-leaved deciduous tree species in Changbai mountains

Functional trait data were collected during the growing seasons of 2020 and 2021 (June September), and radial growth rates were quantified through tree-ring data collected in October 2021.The full name, abbreviation, and unit of each functional trait are as follows:Parameters Abbr. UnitLight-saturated photosynthetic rate per unit leaf area Aa μmol m−2 s−1Light-saturated photosynthetic rate per unit leaf mass Am μmol g−1 s−1Stomatal conductance gs mol m−2 s−1Leaf hydraulic conductance Kleaf mmol m−2 s−1 MPa−1Vein length per unit leaf area VLA mm mm−2Leaf mass per area LMA g m−2Leaf tissue density LTD g cm−3Leaf thickness LT mmLeaf lifespan LL dayLeaf dry mass content LDMC g g−1Stem hydraulic conductance Kstem mmol m−2 s−1 MPa−1Hydraulically weighted vessel diameter of stems Dh_stem μmHuber value Hv m2 m−2Stem vessel density SVD no. mm−2Stem dry mass content SDMC g g−1Stem wood density SWD g cm−3Coarse root theoretical hydraulic conductivity kg m−1 s−1 MPa−1Coarse root hydraulically weighted vessel diameter Dh_CR μmCoarse root vessel density CRVD no. mm−2Coarse root wood density CRWD g g cm−3Fine root traitsAverage diameter AD mmBranch ratio BR n n−1Specific root length SRL cm g−1Root tissue density RTD g cm−3The full name, abbreviation, and unit of growth data are as follows:Diameter growth rate DGR mm year−1Basal area increment BAI cm2 year−1Mass growth rate MGR g cm−1 year−1Note: The data represent mean values of tree species with no missing data.

The number of individuals used to calculate the mean is 4–6 for functional traits and 8–16 for growth rate.