The Forestry Act Article 11

The government agency may, based on where a forest is located, restrict or prohibit the harvest or excavation of grass cover, tree roots and grass roots to a specific location and time period.
中文原文 森林法第11條
主管機關得依森林所在地之狀況,指定一定處所及期間,限制或禁止草皮、樹根、草根之採取或採掘。

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