农地非农化的空间配置效率与农地损失

本文从资源经济学对资源空间配置的基本原理出发,构建了一个衡量农地非农化空间配置效率的模型,并对我国1989-2003年间的农地非农化进行检验,发现该期间我国农地非农化在空间配置上存在效率损失,如果将中部地区14.24%和西部地区3.66%的农地非农化指标转移到东部地区,将能够达到全国农地非农化空间配置的效率最优。然而,上述结论只是在其他条件不变的情况下对原配置的帕累托改善,而不是农地非农化的社会最优配置,因为最优配置还涉及其他方面效率的改善。所以,本文结论进一步指出,在现阶段农地资源存在过度非农化的情况下,对上述指标的调控虽然是必要的,但不是充要的。

Spatial Allocation Efficiency of Farmland Conversion and Farmland Resource Loss in China

Based on the principle of efficient spatial allocation of resource in resource economics, this paper builds a model to measure the efficiency of spatial allocation of farmland resource, and employs this model to test the efficiency of farmland allocation between 1989 and 2003. The result shows the inefficiency of spatial allocation during the farmland conversion process, and it also shows that if the farmland conversion quantity of the central and western China decreases 14.24% and 3.66% respectively, which means the quantity of eonversion transfer to the eastern China, it can leads to an optimal efficient of spatial allocation. The paper also points out that the transfer is a Pareto improvement, while not a Pareto optimal, for that spatial efficiency is only one aspects of an optimal allocation. So this paper draws the conclusion that the transfer of the farmland conversion permit is necessary, but not sufficient in the situation of excessive loss of farmland resource in current China.