比北京还老的古树

Ancient Trees that are Older than Even Beijing

北京市市区有2万多株古树。据1988年第三次古树普查,仅北京市内及近郊就有300年以上树龄的一级古树3804株,百年以上的古树19723株,如加上远郊区县的古树约50000株左右。(古树的树龄必须超过100年,300年以上的为一级古树,100年以上的为二级古树。但古树并不仅仅只是老树,老树是指存活时间长的树木,有可能就长在深山老林,自生自灭。)它们大多种植在辽金时期至明清两代,最早的可以追溯到汉唐。其树种主要是常绿的柏树、松树和落叶的银杏、槐树、枣树等。

There are over 20,000 ancient trees within the territory of Beijing. According to the 1988's third ancient tree census, within the city and suburbs, there are over 3804 trees over three hundred years old, 19,723 trees over one hundred years old, and the ancient trees in the far suburban towns number as many as 50,000. Most of these trees were planted between the Liao-Jin and the Ming-Qing Dynasties. The oldest trees trace back to the Han and Tang Dynasties. Many of these trees are evergreen Cyprus trees, pine trees, and leaf-bearing trees like ginkgo trees, pagoda trees, and jujube trees.