Agricultural Development Act Article 40

Agricultural lands engaged in agricultural purposes with the approval of the land value incremental tax application or with the exemptions of estate duty, bestow tax, or farmland tax shall be subject to regular or random inspections and shall be monitored and supervised by the competent authorities at the county or municipality level in concert with other authorities concerned. In the event of non-compliance of agricultural use pursuant to Articles 37 and 38, the violator shall be subject to the governance of the first paragraph of Article 69 in addition to re-pay the tax, which was exempted before.
中文原文 農業發展條例第40條
作農業使用之農業用地,經核准不課徵土地增值稅或免徵遺產稅、贈與稅、田賦者,直轄市或縣(市)主管機關應會同有關機關定期檢查或抽查,並予列管;如有第三十七條或第三十八條未依法作農業使用之情事者,除依本條例有關規定課徵或追繳應納稅賦外,並依第六十九條第一項規定處理。

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