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一、林木资产(Timber Capital)的理论与方法投入和产出的分析是测定和评价生产力强弱的基本方法和手段,对林业的木材生产力的测定和评价亦不例外。问题在于如何确定和量化表征木材生产力的投入指标和产出指标。以P.J.Ince 博士和 John Fedkiw 为代表的美国林业经济专家提出了以单位面积的生长量指标来衡量其产出水平,以林木资产和有效供材林地面积指标来衡量其投入水平。一般对于单位面积的生长量和有效供材林地面积两项指标表征的木材生产力大小是可以理解和接受的。关于林木资产指标,研究结果指出木材生产力所表达的意义在于它体现了森林的木材生产数量和可供生产木材的森林资源数量之间的相互的关系。换言之,就是研究木材产出量与用于
I. THEORY AND METHOD OF Timber Capital The analysis of input and output is the basic method and measure for measuring and evaluating the productivity. The determination and evaluation of the timber productivity of forestry is no exception. The question is how to identify and quantify input and output indicators that characterize wood productivity. American forestry economists represented by Dr. P.J.Incen and John Fedkiw proposed to measure the level of output per unit area of growth index and measure the level of inputs according to forest assets and the effective area of forest supply. Generally speaking, it is understandable and accepted that the productivity of wood represented by two indicators of the growth of unit area and the effective supply of woodland area. With regard to forest asset indices, the findings indicate that the significance of wood productivity lies in the fact that it reflects the interrelationship between the quantity of timber produced in forests and the quantity of forest resources available for the production of timber. In other words, it is to study the output of wood and use it