In this article, I analyze the arguments marshaled in favor of and against the project to build a new port on the Danube River in the wetland area popularly referred to as Belgrade's Amazonia. Building on scholarship on ascribing value to infrastructures and the environment, I use the term estimation to highlight ambiguity in the process of ongoing and open-ended valuation. Estimation denotes a rough determination of value, a process of valuation based on approximation rather than measurement or enumeration. In estimations articulated by disparate social actors in this case, various economic and socioenvironmental values sometimes clashed, sometimes blended with one another. The flexibility in the use of registers of value enabled contradictory outcomes: a coalition was formed to protect Belgrade's Amazonia despite the heterogeneous arguments against the project, and later, the project's critique was co-opted by the government. Estimations are fundamentally open to opportunistic political uses owing to their malleability, with implications for the politics of valuation with regard to infrastructures and environmental protection more broadly.

中文翻译：

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“贝尔格莱德亚马逊流域”的价值估算

在本文中，我分析了支持和反对在多瑙河上湿地地区（通常被称为贝尔格莱德亚马逊流域）建设新港口项目的争论。基于对基础设施和环境赋予价值的学术研究，我使用“估计”一词来强调持续和开放式评估过程中的模糊性。估计是指对价值的粗略确定，是基于近似而不是测量或枚举的估价过程。在这种情况下，不同的社会参与者所表达的估计中，各种经济和社会环境价值观有时会发生冲突，有时会相互混合。价值登记册使用的灵活性导致了矛盾的结果：尽管对该项目存在不同的争论，但还是成立了一个联盟来保护贝尔格莱德的亚马逊流域，后来，该项目的批评被政府采纳。由于其可塑性，估算从根本上对机会主义政治用途开放，对更广泛的基础设施和环境保护方面的估值政治产生影响。