Status of Ancient and Famous Trees in Wenjiang District,Chengdu City
In order to understand the resources and health status of ancient and famous trees in Wenjiang District,a per-tree survey of ancient and famous trees was conducted.Survey results show that Wenjiang District has 90 ancient trees,belonging to 8 families,9 genera and 9 species,8 second-grade ancient trees,82 third-grade ancient trees,no first-grade ancient trees and famous trees.Height,diameter at breast height and crown of ancient trees are normally distributed on the whole.Among the 90 ancient trees,74 are normal ancient trees and 16 are weakened ancient trees.The overall health condition of ancient trees is relatively good,but there are still a large number of ancient trees with health problems such as deviated crowns,irrational pruning,bark breakage,hollows and leaning of trees.
ancient and valuable treesresource statushealth statusWenjiang District
NETL
NSTL
万方数据
