Research Highlights: One of the priorities of the European Commission is to build up an effective circular economy based on recycling and multiple use of materials. Wood biomass is a renewable raw material and can be used several times in a cascading sequence. Each country has a unique situation regarding the availability and utilization of wood sources. Background and Objectives: The objective of this study was to analyze wood flow in the Czech Republic using the cascading principle of biomass use. The specific situation in the Czech Republic lies in a lack of valid and reliable input data from official statistics. Therefore, the reverse input method was applied. Materials and Methods: Input data analyses of roundwood sources and foreign trade were based on official statistical data. The calculation of raw wood volume consumption in primary processing was performed based on the data after our own correction and recalculation. It was then possible to build up a basic model of multi‐stage cascade wood use. The input volume of roundwood was divided among all types of primary processing production using conversion factors. Results: Cascading use of wood (CUW) showed the level of efficiency of the resource. Official statistical input data and the reversed input data regarding raw wood volume entering wood processing revealed differences at a level of 27%. The overall CUW in the Czech Republic indicates a high rate of wood use in primary processing with low added value and in generating energy. Conclusions: The reverse input method reveals the real situation of wood consumption irrespective of the level of official statistical data. It is suitable to apply in an environment of incomplete or incorrect input data. CUW in Czechia showed an opportunity for increasing the efficiency of wood utilization. The structure of wood use needs to be optimized towards creating greater added value.

中文翻译：

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捷克共和国的级联使用木材

研究重点：欧盟委员会的优先任务之一是在材料的循环利用和多次使用的基础上建立有效的循环经济。木材生物质是可再生的原材料，可以按级联顺序使用多次。每个国家在木材来源的获取和利用方面都有其独特的情况。背景与目的：本研究的目的是使用生物质利用的级联原理分析捷克共和国的木材流动。捷克共和国的具体情况是缺乏官方统计数据的有效和可靠输入数据。因此，应用了反向输入法。材料和方法：圆木来源和对外贸易的输入数据分析基于官方统计数据。根据我们自己的校正和重新计算后的数据，进行了初级加工中原木体积消耗的计算。这样就可以建立多级级联木材使用的基本模型。使用转换因子将圆木的输入量分配给所有类型的初级加工生产。结果：级联使用木材（CUW）显示了资源效率水平。关于进入木材加工的原木量的官方统计输入数据和反向输入数据显示差异为27％。捷克共和国的整体CUW值表明，初级加工中木材的使用率很高，但附加值较低，并且用于发电。结论：反向输入法揭示了木材消耗的真实情况，而与官方统计数据的水平无关。适用于输入数据不完整或不正确的环境。捷克共和国的CUW展示了提高木材利用效率的机会。木材使用的结构需要优化，以创造更大的附加值。