Phenological data of four woody plants monitored at 10 sites in China from 1963 to 2020

The long-term ground observation phenological data of 4 woody plants at 10 stations of the Chinese Phenological Observation Network (CPON) are made into a key phenological data set through unified data quality control. Time range: 1963-2020;Site name: Beijing, Xi'an, Shenyang, Minqin, Harbin, Hohhot, Nanjing, Changsha, Hefei, Kunming;Species name: Fraxinus chinensis, Robinia pseudoacacia, Ulmus pumila, Syringa oblata;Phenophases (unit: day of year): first leaf date (FLD) and leaf coloring date (LCD).