一、历史悠久的乡土树种黄桷树 Ficus Lacor Ham,别名大叶榕、黄桷榕等,桑科榕树属。原产华南、西南地区,尤以四川最为普遍。《水经注》中记述,长江与嘉陵江汇合后穿过的第一峡为“黄桷峡”(即铜锣峡),皆因当时在峡之两岸黄桷树茂密成林,葱茏蔽天而得名。可见黄桷树栽培历史之久远。最近,黄桷树被重庆市推选为市树。 First, a long history of native tree species Ficus Lacor Ham, Ficus Lacor Ham, the big ficus, yellow ficus, etc., Sangke banyan tree. Native South China, Southwest China, especially in Sichuan most common. “Water Meridian Note” described in the Yangtze River and the Jialing River after the convergence of the first gully “Huangpi Gorge” (ie, Tongluoshangxia), both because at that time the two sides of the Gorge on both sides of densely clogged forests, scallion name . Visible Huangpi tree cultivation history is long. Recently, Huangpi tree was elected as the city of Chongqing tree.