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美国首都华盛顿有一种挺拔优美的行道树,树冠浓密嫩绿,扇形叶子迎风飘舞,入秋一片金黄,银色果实累累坠枝。日本一些城市不但将它作为风景树,而且列为防火、防震的树种。韩国遍种此树,每年出口几千吨的果实。瑞典、德国……也能发现这种树的踪迹。它们都来自同一个祖家——中国,名叫银杏。爷爷种树孙儿得果 2亿年前银杏广泛分布于世界各地,第四纪冰川期大部分物种被冻死,唯中国的银杏幸免于难。这些“活化石”代代繁衍,汉代在江
Washington, the capital of the United States, has a tall and graceful road tree with dense crown of verdure and fan-shaped leaves flying in the wind, turning golden autumnal and silver fruit. Some cities in Japan not only use it as a landscape tree, but also as a fireproof, earthquake-resistant tree species. The tree is widely planted in Korea, exporting thousands of tons of fruit every year. Sweden, Germany ... ... can also find traces of this tree. They are from the same ancestor - China, called Ginkgo. Grandfather tree grandson fruit 200 million years ago, ginkgo widely distributed around the world, most of the Quaternary glacial period was frozen to death, the only Chinese ginkgo survived. These “living fossils” flourished from generation to generation, in the Han Dynasty in Jiang