Current Status of Ancient Walnut Resources in Yunnan Province
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
