可再生资源动态经济效应的理论分析

Theoretical Analysis of Dynamic Economic Effects of Renewable Resources

文章将经济增长问题定义为物质资本和可再生资源的积累过程问题。把可再生资源作为资本以外的一种生产投入要素,引入最优经济增长模型,建立三部门经济增长模型。通过计算经济稳定状态下的最优资本积累量和最优可再生资源积累量来分析可再生资源的动态经济效应。得出以下结论:(1)可再生资源产出弹性的增加,使稳定状态下的最优资本积累量减少,资本积累的减少对经济增长产生负的影响(;2)可再生资源产出弹性的增加,使稳定状态下的最优可再生资源积累量增加。可再生资源积累的增加对经济增长产生正的影响;(3)可再生资源技术水平较高时,其产出弹性对经济增长的影响为正;(4)可再生资源技术水平较低时,其产出弹性对经济增长的影响为负。

This paper defines the problem of economic growth as the problem of the accumulation process of physical capital and renewable resources.Taking renewable resources as a production input factor other than capital,it is introduced into the optimal economic growth model,and a three-sector economic growth model is established.The dynamic economic effects of renewable resources are analyzed by calculating the optimal capital accumulation and the optimal renewable resource accumulation in the economic steady state.The following conclusions are drawn:(1)The increase in the output elasticity of renewable resources reduces the optimal amount of capital accumulation in a steady state,and the reduction in capital accumulation has a negative impact on economic growth.(2)The increase in the output elasticity of renewable resources increases the optimal accumulation of renewable resources in a steady state.An increase in the accumulation of renewable resources has a positive impact on economic growth.(3)When the technical level of renewable resources is relatively high,its output elasticity has a positive impact on economic growth.(4)When the technical level of renewable resources is low,its output elasticity has a negative impact on economic growth.