Dual strategies enable migrating temperate broadleaf trees to overcome nitrogen limitation in the southern boreal forest

Our data were obtained from experiments and comprise information on Mongolian oak across variables associated with leaves (leaf N concentration, leaf N:P ratio, leaf N resorption efficiency, leaf area, leaf mass, SLA, leaf N per unit area, SPAD, and Asat), fine roots (fine-root N concentration and root δ¹⁵N), litters (litter N concentration, litterfall N input and litter C:N ratio), and soils (total soil N concentration, soil C:N ratio, DON concentration, NH₄⁺-N concentration, and DTN concentration). Data from Dahurian larch are also partially included.