The large old ginkgos in Jiangsu province, East China

This dataset is the background survey data for our article which contains two parts in Excel. One is about \"Large old ginkgo individuals\", and the other is about \"Large old ginkgo groves\". In the first sheet, site, GPS, DBH, protection category, growth status and tree-habitat type of each ginkgo individual were included. In the second sheet, site,  GPS, mean DBH, growth status and tree-habitat type of each ginkgo grove were included.