本研究分析「南投－彰林34萬5仟伏特超高壓輸電線路」對鄰近土地價值的影響，使用條件評估法設計問卷，調查對象為高壓電線50公尺內土地所有權人，運用Heckman兩階段評估法估測土地離高壓電線的距離與土地價格間之關連性。本研究顯示受訪者擔心高壓電線對健康產生影響會選擇購買離高壓電線較遠的土地，以Heckman兩階段評估法估測結果顯示高壓電線影響線下土地價格的降幅約在71－78.4%，高壓電線對土地價值影響範圍最遠可達725公尺。根據本研究結果，高壓電線會對土地價值造成負面影響，因此台電和其他相關單位應更完善規劃高壓電線興建的路線，盡量避免經過人民居住或是耕作區域，以維護人民生命財產安全。

The main purpose of this study is to analyze the impacts of the Nantou-ChangLin 345KV Power Transmission Line (HVOETL) on the adjacent farm land value. Contingent valuation method (CVM) was adopted by surveying the land owner within 50 meters of this HVOETL. Heckman two-stage least square method was used to estimate the willingness to pay (WTP) values for purchasing farm land. The results showed that those who worried about power lines having a negative impact on health would choose to purchase the land far away from power lines. The impacts of this HVOETL on the reduction of farm land value were estimated to be within 71% to 78.4%. This impact can be extended as far as 725 meters and beyond that it will become negligible. According to our analysis, the negative effects of this HVOETL on farm land value are very strong. Therefore, Taipower Company and the related government agencies should be highly considerate when planning such a HVOETL project. In particular, the HVOETL should not go through the populated and farming areas for the safety of human lives and the protection of property values.