Although the transition from linear to circular economy is being carried out by many different actors, there is still not a well-established methodology for its assessment. In this paper, a review of available approaches for evaluating circular economy (technical and biological cycles) has been conducted. In total, 2.113 information sources have been revised and 105 of them were included in the review. They have been categorised per level (macro, , micro and nano), cycle (technical, biological or both) and methodology used, together with the sector according to NACE codes. Using this information, a positioning framework for classifying the different appraisal options has been developed and depicted in a 3D cube where each category is represented in one of the axes (level, cycle, and methodology). Moreover, a decision support tool has been created to help triple helix stakeholders selecting the most suitable approach according to the information they are looking for, i.e. the initial question they pose regarding how to assess circular economy. Since the main gap concerning available approaches has been identified for the biological cycle at micro and nano levels, a critical analysis of existing choices has been conducted. Finally, open areas for future work towards promoting circular bioeconomy assessment are identified.

中文翻译：

---

如何选择最佳的循环经济评估方法？生物系统的 3D 定位框架、决策支持工具和关键分析

尽管从线性经济向循环经济的转变是由许多不同的参与者进行的，但仍然没有一个完善的评估方法。本文对评估循环经济（技术和生物循环）的可用方法进行了回顾。共修订信息源2.113个，纳入审核105个。它们按照级别（宏观、微观和纳米）、周期（技术、生物或两者）和所使用的方法以及根据 NACE 规范的部门进行分类。利用这些信息，开发了一个用于对不同评估选项进行分类的定位框架，并在 3D 立方体中进行了描述，其中每个类别都以一个轴（级别、周期和方法）表示。此外，还创建了一个决策支持工具，帮助三螺旋利益相关者根据他们正在寻找的信息（即他们提出的有关如何评估循环经济的最初问题）选择最合适的方法。由于已经确定了微米和纳米水平生物循环中可用方法的主要差距，因此对现有选择进行了批判性分析。最后，确定了促进循环生物经济评估的未来工作的开放领域。