In this paper a decision support system for systematically evaluating the impact of labeling products with their carbon footprints is developed and applied to prioritize products for carbon labeling in a large superma...In this paper a decision support system for systematically evaluating the impact of labeling products with their carbon footprints is developed and applied to prioritize products for carbon labeling in a large supermarket chain in the UK.Carbon labels may change consumers’ behavior and encourage suppliers to implement carbon-reduction solutions.Those changes may,however,lead to unintended risks.To handle the challenges of uncertainties in the evaluation,the Evidential Reasoning approach and the Intelligent Decision System software for multi-criteria decision analysis are applied to support the process.The system developed can be applied to assessing the impact of sustainable development policies to maximize their benefits and minimize their risks.展开更多
在温室气体的累积排放导致全球增温趋势明显,人类生存面临挑战的气候环境条件下,研究蔬菜生产碳足迹,对于控制蔬菜生产温室气体排放,缓解气候变化与蔬菜生产可持续发展的矛盾具有积极意义。基于IPCC国家温室气体清单指南,运用过程生命...在温室气体的累积排放导致全球增温趋势明显,人类生存面临挑战的气候环境条件下,研究蔬菜生产碳足迹,对于控制蔬菜生产温室气体排放,缓解气候变化与蔬菜生产可持续发展的矛盾具有积极意义。基于IPCC国家温室气体清单指南,运用过程生命周期评价法、动态评估及多元回归分析,对湖北省2003-2013年蔬菜生产系统碳足迹进行了核算。结果表明,湖北省蔬菜生产系统碳足迹由2003年的116.05万t CE增长到2013年的142.81万t CE,增加了23.06%。各生产投入品温室气体排放碳足迹排在前3位的为肥料、农药和排灌电能,分别占总排放碳足迹的58.07%、18.47%、9.03%。2003-2013年土地利用碳强度保持在0.97-1.29 t CE/hm2;单位产量碳强度从2003年的37.06 kg CE/t提高到39.91 kg CE/t,收益碳强度从2003年的0.10 kg CE/元降低到2013年的0.02 kg CE/元;碳生态效率从2003年的1.87降低到2013年的1.73。多元回归分析表明,湖北省蔬菜生产系统温室气体排放碳足迹与肥料用量、农药使用量、排灌电能三者间存在显著的线性相关,其相关性分别为0.571、0.341和0.228。根据分析结果,提出了强化科学施肥力度,提高土地规模化经营水平;推广生物防治,建设绿色防控体系;推广节水灌溉技术等可显著减少温室气体排放的策略。展开更多
文摘In this paper a decision support system for systematically evaluating the impact of labeling products with their carbon footprints is developed and applied to prioritize products for carbon labeling in a large supermarket chain in the UK.Carbon labels may change consumers’ behavior and encourage suppliers to implement carbon-reduction solutions.Those changes may,however,lead to unintended risks.To handle the challenges of uncertainties in the evaluation,the Evidential Reasoning approach and the Intelligent Decision System software for multi-criteria decision analysis are applied to support the process.The system developed can be applied to assessing the impact of sustainable development policies to maximize their benefits and minimize their risks.
文摘在温室气体的累积排放导致全球增温趋势明显,人类生存面临挑战的气候环境条件下,研究蔬菜生产碳足迹,对于控制蔬菜生产温室气体排放,缓解气候变化与蔬菜生产可持续发展的矛盾具有积极意义。基于IPCC国家温室气体清单指南,运用过程生命周期评价法、动态评估及多元回归分析,对湖北省2003-2013年蔬菜生产系统碳足迹进行了核算。结果表明,湖北省蔬菜生产系统碳足迹由2003年的116.05万t CE增长到2013年的142.81万t CE,增加了23.06%。各生产投入品温室气体排放碳足迹排在前3位的为肥料、农药和排灌电能,分别占总排放碳足迹的58.07%、18.47%、9.03%。2003-2013年土地利用碳强度保持在0.97-1.29 t CE/hm2;单位产量碳强度从2003年的37.06 kg CE/t提高到39.91 kg CE/t,收益碳强度从2003年的0.10 kg CE/元降低到2013年的0.02 kg CE/元;碳生态效率从2003年的1.87降低到2013年的1.73。多元回归分析表明,湖北省蔬菜生产系统温室气体排放碳足迹与肥料用量、农药使用量、排灌电能三者间存在显著的线性相关,其相关性分别为0.571、0.341和0.228。根据分析结果,提出了强化科学施肥力度,提高土地规模化经营水平;推广生物防治,建设绿色防控体系;推广节水灌溉技术等可显著减少温室气体排放的策略。
