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银杏,第四纪冰川以后成为亚洲东部独存的树种。银杏在日本分布于北到本州青森县,南达九州鹿几岛的广大地区。全国1000年生以上的古银杏有57株,500年生以上的古银杏有161株。如长野县有2000年生的古银杏,福冈县有1870年生的古银杏,广岛县和大分县有1600年生的古银杏,等等。目前,日本文部省已把这些古老的银杏大树列为受保护的天然历史纪念物。岩手县有一株日本最大的银杏,树高达47米,胸径达5.5米。另一株在日本的德岛县,
Ginkgo, Quaternary glaciers later became the only species in eastern Asia. Ginkgo distributed in Japan in the north to Aomori Prefecture Honshu, south of Kyushu Kagoshima area. There are 57 ancient ginkgo trees above 1,000 years old and 161 ancient ginkgo trees over 500 years old. Such as ancient ginkgo born in 2000 in Nagano Prefecture, ancient ginkgo born in 1870 in Fukuoka Prefecture, ancient ginkgo born in 1600 in Hiroshima Prefecture and Oita Prefecture, and so on. At present, Japan’s Ministry of Education has listed these ancient ginkgo trees as protected natural historical monuments. Iwate Prefecture has one of Japan’s largest ginkgo tree up to 47 meters, diameter of 5.5 meters. Another strain in Tokushima, Japan,