1.1 这一做法提供了在选择参考情景时应遵循的指导方针和标准，利用基于科学的可衡量指标，以促进透明和可复制的比较。 1.1.1 评估生物产品的影响是决策者、研究人员和其他人的共同愿望。这种评估本质上需要将有生物产品的系统（测试场景）与没有生物产品的体系（参考场景）下的条件进行比较。 1.1.2 这种做法适用于但不限于生命周期评估、可持续性分析和技术经济评估。 1.2 此做法为测试和参考场景提供了一致的术语。 本规程中使用的术语可以在其他文件中使用，也可以由其他具有替代定义的从业者使用。 1.3 只要测试或参考场景直接涉及生物质或来自生物质的能源或工业化学品，该实践就适用。 1.4 这一做法为制定和记录参考情景提供了指导方针，这些参考情景代表了在没有待评估的基于生物量的测试情景的情况下预计会发生的情况的最佳可用数据和预测。 1.5 该做法适用于: 1.5.1 对为现有研究或比较选择的参考方案的适用性进行审查和评估。 1.5.2 所有基于生物质的生产系统和材料，包括林业、农业、藻类、- 产品和废物。 1.6 本标准并不旨在解决与其使用相关的所有安全问题（如有）。本标准的使用者有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 1.7 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认的标准化原则制定的。

1.1 This practice provides guidelines and criteria to follow when selecting reference scenarios, utilizing science-based measurable indicators, to facilitate a transparent and replicable comparison. 1.1.1 It is a common desire for decision makers, researchers, and others to assess the effects of bioproducts. Such assessments inherently require the comparison of conditions under a system with the bioproduct (test scenario) to a system without the bioproduct (the reference scenario). 1.1.2 This practice is applicable, but not limited to, life-cycle assessments (LCA), sustainability analyses, and techno-economic assessments (TEA). 1.2 This practice provides consistent terminology for use with the test and reference scenario. The terminology used in this practice may be used in other documents and by other practitioners with alternate definitions. 1.3 This practice is applicable whenever the test or reference scenario involves biomass directly or energy or industrial chemicals from biomass. 1.4 This practice provides guidelines for developing and documenting reference scenarios that represent the best available data and projections for what is expected to occur in the absence of the biomass-based test scenario to be evaluated. 1.5 The practice is applicable to: 1.5.1 Reviews and evaluations of the suitability of the reference scenario selected for an existing study or comparison. 1.5.2 All biomass-based production systems and materials, including forestry, agriculture, algae, co-products, and wastes. 1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.7 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.