Evaluation of the physical vulnerability of the infrastructure using the concept of emergy.

The data of a methodology carried out for the Combeima river basin in Colombia (South America) is presented, in which the effect of the evolution of land use on the flood regime and physical vulnerability in the period 1976- 2017 through hydrological and hydraulic modeling and the implementation of a method for the evaluation of vulnerability to floods. This allowed confirming reports related to the statement that changes in land use produce effects on the behavior of direct runoff in watersheds and its relationship with the vulnerability of structures near surface watercourses. The research work focused on: i) evaluating the effect of changes in land use on physical vulnerability in the flood regime; ii) propose the evaluation of physical vulnerability based on the variation of soil properties through the concept of emergy. The results indicate that the incorporation of variables related to soil and the hydraulic properties of rivers improve the evaluation of vulnerability in land use change scenarios, so this approach could be useful for planners in decision-making processes.

本研究呈现了针对南美洲哥伦比亚孔贝马（Combeima）流域所开展的方法学相关数据，该研究借助水文与水力学建模及洪水脆弱性评估方法的应用，剖析了1976年至2017年间土地利用演变对洪水情势及物理脆弱性的影响。本研究证实了相关论断：土地利用变化会对流域直接径流行为产生影响，且该变化与地表水道周边设施的脆弱性存在关联。本研究聚焦于两大核心目标：其一，评估土地利用变化对洪水情势下物理脆弱性的影响；其二，基于能值（emergy）概念，结合土壤属性变化提出物理脆弱性评估方法。研究结果表明，纳入与土壤及河道水力学属性相关的变量，可提升土地利用变化情景下的脆弱性评估精度，因此该研究方法可为规划决策者提供有力支撑。