The census of ancient and famous tree resources in Yunnan Province was conducted from 2017 to 2019.The results showed that there were a total of 4765 ancient walnut resources in Yunnan,belong-ing to 3 genera and 4 species.There were 2881 ancient walnut plants,21 ancient tree groups with an ar-ea of 151.05 hm2 and 1884 plants.There were 71 first-class ancient trees,accounting for 1.49%of the total trees,243 second-class ancient trees,accounting for 5.10%,and 4451 third-class ancient trees,accounting for 93.43%.Except for Xishuangbanna Prefecture,walnut ancient trees were distributed in 15 other prefectures(cities)and 88 counties(cities,districts)in Yunnan.The national second-class protected plants,25 Annamocarya sinensis ancient trees,which were listed as"critically endangered(CR)"species by IUCN,were all distributed in Wenshan Prefecture.
ancient walnut resourcesancient tree plantancient tree groupresource statusYunnan Province
NETL
NSTL
万方数据
