Research on Ancient Ginkgo biloba Resource and Growth Characteristic in Jiangxi Province

Ancient Ginkgo biloba was selected as material to make factfinding.The result showed that there were 442 ancient Ginkgo biloba trees in Jiangxi Province, which were distributed among 9 cities,45 countries and 63 villages and towns.Among of them,153trees had growth indexes. In the 88 known sex of Ginkgo biloba,the female plants accounted for 7500%.The maximum tree height was 400m, while the minimum was 70m.The maximum tree age was 2 900 years and the minimum was 100years.The maximum DBH was 357m while the minimum was 020m.The maximum average crown was 310m while the minimum was 055m.There were 7 chichied ginkgo trees,and the maximum number of chichies was 10,and the largest chichi was 60cm.There were 22 multtrunked ginkgoes,of which the maximum number of multtrunks was 15 per individual and the DBH of the biggest multtrunk was 115m.There were also twocolored ginkgoes, different fruit ginkgo. There are two typical ancient ginkgo trees in Jiangxi Province.