1.1 该实践提供了选择参考场景时应遵循的准则和标准，利用基于科学的可测量指标，以促进透明和可复制的比较。 1.1.1 评估生物产品的效果是决策者、研究人员和其他人的共同愿望。这种评估本质上需要比较有生物产品的系统（测试场景）和没有生物产品的系统（参考场景）下的条件。 1.1.2 该实践适用于但不限于生命周期评估（LCA）、可持续性分析和技术经济评估（TEA）。 1.2 该实践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用于其他文件中，也可由其他具有替代定义的从业者使用。 1.3 当测试或参考场景直接涉及生物质或生物质能源或工业化学品时，本实践适用。 1.4 本实践提供了制定和记录参考场景的指南，这些场景代表了最佳可用数据，并预测了在缺乏待评估的基于生物质的测试场景的情况下预期会发生的情况。 1.5 本规程适用于: 1.5.1 审查和评估为现有研究或比较选择的参考场景的适用性。 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、副产品和废物。 1.6 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户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（TBT）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.