Enforcement Rules of Soil and water Conservation Act Article 2

The phrase "afforested with legally prescribed tree species" as mentioned in Subparagraph 7, Paragraph 1, Article 3 of the Act refers to afforestation and nurture based on the types of tree, method, and density designated by the central or special municipality forestry regulatoryauthority.
中文原文 水土保持法施行細則第2條
本法第三條第七款所稱法定林木造林,係指依中央或直轄市林業主管機關所指定之樹種、方法及密度,從事造林及撫育者。

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