Styles David, Börjesson Pål, D'Hertefeldt Tina, Birkhofer Klaus, Dauber Jens, Adams Paul, Patil Sopan, Pagella Tim, Pettersson Lars B, Peck Philip, Vaneeckhaute Céline, Rosenqvist Håkan
School of Environment, Natural Resources and Geography, Bangor University, Deiniol Road, Gwynedd, Wales, Bangor, LL57 2UW, UK.
Environmental and Energy System Studies, Lund University, PO Box 118, 22100, Lund, Sweden.
Ambio. 2016 Dec;45(8):872-884. doi: 10.1007/s13280-016-0790-9. Epub 2016 May 30.
Whilst life cycle assessment (LCA) boundaries are expanded to account for negative indirect consequences of bioenergy such as indirect land use change (ILUC), ecosystem services such as water purification sometimes delivered by perennial bioenergy crops are typically neglected in LCA studies. Consequential LCA was applied to evaluate the significance of nutrient interception and retention on the environmental balance of unfertilised energy willow planted on 50-m riparian buffer strips and drainage filtration zones in the Skåne region of Sweden. Excluding possible ILUC effects and considering oil heat substitution, strategically planted filter willow can achieve net global warming potential (GWP) and eutrophication potential (EP) savings of up to 11.9 Mg COe and 47 kg POe ha year, respectively, compared with a GWP saving of 14.8 Mg COe ha year and an EP increase of 7 kg POe ha year for fertilised willow. Planting willow on appropriate buffer and filter zones throughout Skåne could avoid 626 Mg year POe nutrient loading to waters.
虽然生命周期评估（LCA）的边界已扩大，以考虑生物能源的负面间接影响，如间接土地利用变化（ILUC），但在LCA研究中，多年生生物能源作物有时提供的生态系统服务，如水净化，通常被忽视。本研究应用后果性生命周期评估，来评估瑞典斯科讷地区50米河岸缓冲带和排水过滤区种植的未施肥能源柳树的养分截留和保留对环境平衡的重要性。排除可能的ILUC影响并考虑石油热替代，与施肥柳树相比，战略性种植的过滤柳树每年每公顷可实现净全球变暖潜势（GWP）和富营养化潜势（EP）节省，分别高达11.9 公吨二氧化碳当量和47 千克磷当量，而施肥柳树每年每公顷的GWP节省为14.8 公吨二氧化碳当量，EP增加7 千克磷当量。在斯科讷各地的适当缓冲带和过滤区种植柳树，每年可避免向水体中输入626 公吨磷当量的养分。
