2000年至2005年台灣中部農林土地利用變遷之探討

Abstract

普查資料顯示，中部縣市2000年至2005年之間林地面積增加了約10,807公頃，農地面積亦減少了近10,480公頃，表示農林土地利用的消長具有一定的相關性。本研究旨在以2000年與2005年農林普查資料進行路徑分析，找出可能影響農林土地變遷之因素，並釐清其中影響之因果關係，以瞭解當時農林土地利用變遷的原因。 路徑分析結果顯示，林地面積增加的直接影響因素，包括農地面積的減少以及林業勞動力的增加，而農地面積減少的直接影響因素，包括農業勞動力減少、休耕農戶數增加與銷貨收入低於五萬元農戶數增加，因此，此三項因素間接影響林地面積增加。

According to the agricultural and forestry census, forestland increased 10,807 hectares and agricultural land decreased 10,480 hectares in central Taiwan from 2000 to 2005. This indicated that the land-use changes between forest and agricultural sectors have closed related with each other. The purpose of this study is to find out the factors affecting the change in agricultural lands and forestlands and to clarify the relationship among the factors based on 2000-2005 agricultural and forestry census by path analysis. The study result indicates that the direct factors to the increase in forest land are the decrease in agricultural land and the increase in forestry labor. The direct factors to the decrease in agricultural land includes the decrease in agricultural labor, the increase in set-aside households and the increase in the number of agricultural households' revenues less than 50,000 NT dollars, the three factors therefore cause on the increase in forest land indirectly.