The Benefit Evaluation of The Flood Control Works

以往的防洪工程效益评价只是以降低损失成本为目标，而不是抓住状态概率的变化，即不确定性、区位选择作用引起的土地利用变化、扩大效应。定义了收益的概念，扩展了当量变异的概念，提出了包含状态变化收益和区位选择概率的非未定EV作为最合理的评价定义，并通过案例分析说明了区位均衡模型收益评价的应用可能性。

The past benefit evaluation of the flood control works is nothing but object of reducing damage cost, don't seize change for state probability, that is uncertainty, land use change due to location choice action, and extend effect.In this paper, we constructed Location Equilibrium Model based on multispace general equilibrium theory under uncertainty. And we defined the benefit, expanded the concept of Equivalent Variation, Proposed Non-Contingent EV including the benefits of change for state and location choice probability, as the most rational definition for evaluation.The applicable possibility of Location Equilibrium Model, Benefit Evaluation was shown through a case study.