noun
preserved tree; protected tree
Refers to a tree that has been officially designated for preservation, often by a local government or community, due to its age, size, historical significance, or ecological value.
この神社の境内には、市の保存樹に指定された大きなクスノキがある。
In the grounds of this shrine, there is a large camphor tree designated as a city preserved tree.
Compound of 保存 (preservation) and 樹 (tree). A straightforward modern term for a tree designated for preservation.