Land Act Article 5

“Improvement on land” referred to in this Act shall be divided into two different kinds: constructional improvements and agricultural improvements.Constructional improvements shall denote buildings or construction works affixed to land; agricultural improvements shall denote farm crops and other plants grown on land as well as improvement in irrigation and drainage and in soil.
中文原文 土地法第5條
本法所稱土地改良物,分為建築改良物及農作改良物二種。
附著於土地之建築物或工事,為建築改良物,附著於土地之農作物及其他植物與水利土壤之改良,為農作改良物。

English translation for reference only; the Chinese text prevails. Not legal advice.