農地價格漲跌或一路上升均影響農地之利用及擁有。農場經營因須靠農地本身肥力，地價之漲跌影響農場面積之擴展及出售。本研究探文獻回顧方式探討美國及台灣漲跌現象及主要影響因素。美國農地價值仍受生產力影響（約半數）；餘爲區分政策(zoning)、金融變數（利率及物價）及政府農業各種補貼政策等；近都市者更受都市化影響。台灣農地價值在1950及1960年代初期受生產力影響，目前較少但仍爲上漲原因，係受農產品價格上漲的綠故。而上漲之主要因素爲人地比例高、各項用途競爭及預期轉用爲非農業用途之資產增值等影響。今後如何將農地價值變動與經濟結構相連結是項值得研究的課題。
Both the fluctuation and ever increase of farmland prices affect the utilization and preservation of farmland. Farm operation will result in either expansion or closure due to the change of farmland prices. Through the review of literature, this study attempts to analyze the changes of and major factors affecting farmland prices in the U. S. and Taiwan. In the U. S., farmland prices have been mainly influenced by land productivity (roughly 50%); other factors are large zoning of agricultural land, financial variables (the rate of interest; inflation etc.) and urbanization near metropolitan fringes. In Taiwan, in 1950's and early 1960's, farmland prices were influenced by land productivity (government payments and technological improvement) which still contributes the increase of land value, but with decreasing share. Farmland prices have been mainly influenced by the high man-land ratio, increasing demand for non farms uses and the expectation of increasing value resulting from the transfer of land uses from farm to non-farm. In Taiwan, how to combine farmland prices and economic change will be an issue deserving for further research.
