2005年台灣中部地區林戶林業收入影響因素之研究

Abstract

在台灣從事林業似乎是機會成本比較高的選擇，從政府節節高升的獎勵造林金可看出些端倪。本研究利用2005年林業普查資料，以財產權理論為主建構分析模型，以探討影響中部地區私有林戶林業收入的因素，並應用空間統計方法檢測鄉鎮之間的空間自相關，與使用一般迴歸與分量迴歸等方法分析影響林業收入的因素。 研究結果顯示，林地面積、勞動力、自有勞動比例、縣市別與土地所有權別皆是影響林戶林業收入的重要因素，當林地面積愈大、勞動力愈多、自有勞動比例愈低且為自有林戶，其林業收入愈高；但在不同林業收入分量下，其邊際效果有所不同。

The increase in payment of afforestation incentive program recently indicates a high opportunity cost of the forestry works in Taiwan. The purpose of this study is to use forestry censuses data to examine empirically the factors to affect income of the forest households in central region of Taiwan. An analysis model is developed mainly based on property right theory to find out the factors. Application of spatial statistical methods to detect the spatial effect of different townships, and use regression and quantile regression methods to analyze what factors would affect forest income. Based on regression analyses, the study result shows forest household income is affect positively by the size of forestland, the number of labours and private forest ownership of land, but the proportion of self-employed labours negatively. The marginal effect in different forestry income would not the same.