中文摘要：

以湖北省银杏古树为对象,通过资料收集和实地调查,结果显示：湖北省有银杏古树11 431株,分布在15个市（区）,57个县（市、区）和123个乡（镇）。346株有生长指标,雌株占91.52%。树高最大为50.0 m,最小为6.0m;树龄最长为3 000 a;胸径最大为5.25 m（基径）,最小仅为0.35 m;平均冠幅最大为37.0 m,最小为4.5 m。垂乳银杏有19株,单株垂乳个数最多为84个,垂乳最长达80 cm;复干银杏有31株,单株复干数最多为40株,复干胸径最大为1.78 m。

英文摘要：

This study take ancient ginkgo trees in Hubei Province as the object,through data collection and field survey,the result shows that there are 11 431 ancient trees of Ginkgo biloba L.distributed in 15 cities（district）,57couties（county-level cities,district） and 123 townships（towns）.There are 346 ancient ginkgo trees of which female trees accounted for 91.52% have growth indexes.The maximum tree height is 50.0 m,the minimum is 6.0 m;the longest tree age is 3000 years;the maximum DBH is 5.25 m（base diameter）,the minimum is only 0.35 m;the maximum of average crown is 37.0 m,while the minimum is 4.5 m.There are 19 chichi ginkgo trees of which the maximum number of chichies is 84 of the single plant and the biggest chichi is as long as 80 cm;There are 31 mult-trunk ginkgoes of which the maximum number of mult-trunks is 40 of the single plant and the DBH of the biggest mult-trunk is 1.78 m.