资源约束条件下长期经济增长的动力机制--基于内生增长理论模型的研究

文章通过将存量有限且不可再生的自然资源引入生产函数,构建了一个产品种类扩张型的四部门内生增长模型。首先,通过对模型的市场均衡分析,给出了平衡增长路径的经济增长率以及均衡解存在的一个充分性条件,系统地探讨了在人口增长、自然资源不断耗竭的约束条件下内生技术进步促进长期经济增长的动力机制;其次,通过对平衡增长路径进行比较静态分析,讨论了各经济变量以及经济环境参数的变化对稳态增长率的影响效应及其作用机制,并给出其经济学解释;最后是综合结论及政策涵义。

Resource Depletion and Long-run Economic Growth Based on a Endogenous Growth Model

We extend the endogenous growth model with horizontal innovations to construct a four-sector growth model in which we introduce a non-renewable resource sector. In this set-up, we focus on how population growth, increasing non-renewable resource depletion and degradation, and endogenous technological progress affect long-run economic growth. First, we study the equilibrium of a decentralized economy, derive the solution of the competitive equilibrium and clarify the sufficient condition under which the equilibrium paths exist; more specifically, we perform .some comparative static analysis to examine the effect of variables and parameters variations arising from the economic environment on the steadystate growth rate. Finally, we present some concluding remarks and discuss their policy implications.