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首页> 外文期刊>The International Journal of Life Cycle Assessment >Developing characterisation factors for land fragmentation impacts on biodiversity in LCA: key learnings from a sugarcane case study
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Developing characterisation factors for land fragmentation impacts on biodiversity in LCA: key learnings from a sugarcane case study

机译：制定土地零散化对LCA中生物多样性的影响的表征因素：从甘蔗案例研究中获得的重要经验

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PurposeHabitat change was identified by the Millennium Ecosystem Assessment as the main direct driver of biodiversity loss. However, while habitat loss is already implemented in Life Cycle Impact Assessment (LCIA) methods, the additional impact on biodiversity due to habitat fragmentation is not assessed yet. Thus, the goal of this study was to include fragmentation effects from land occupation and transformation at both midpoint and endpoint levels in LCIA.MethodsOne promising metric, combining the landscape spatial configuration with species characteristics, is the metapopulation capacity , which can be used to rank landscapes in terms of their capacity to support viable populations spatially structured. A methodology to derive worldwide regionalised fragmentation indexes based on was used and combined with the Species Fragmented-Area Relationship (SFAR), which relies on to assess a species loss due to fragmentation. We adapted both developments to assess fragmentation impacts due to land occupation and transformation at both midpoint and endpoint levels in LCIA. An application to sugarcane production occurring in different geographical areas, more or less sensitive to land fragmentation, was performed.Results and discussionThe comparison to other existing LCIA indicators highlighted its great potential for complementing current assessments through fragmentation effect inclusion. Last, both models were discussed through the evaluation grid used by the UNEP-SETAC land use LCIA working group for biodiversity impact assessment models.ConclusionsMidpoint and endpoint characterisation factors were successfully developed to include the impacts of habitat fragmentation on species in LCIA. For now, they are provided for bird species in all forest ecoregions belonging to the biodiversity hotspots. Further work is required to develop characterisation factors for all taxa and all terrestrial ecoregions.
机译：目的栖息地的变化被千年生态系统评估确定为生物多样性丧失的主要直接动因。但是，尽管已经在生命周期影响评估（LCIA）方法中实现了生境丧失，但尚未评估由于生境破碎化而对生物多样性造成的其他影响。因此，本研究的目的是包括LCIA中点和终点水平的土地占用和土地转化带来的碎片化影响方法。一个有前途的度量标准是将景观空间配置与物种特征相结合，即种群密度，可以用来对在支持空间结构可行种群方面的能力。使用了一种基于此方法得出全球区域化碎片指数的方法，并将该方法与“物种碎片面积关系”（SFAR）相结合，该方法依赖于评估由于碎片而造成的物种损失。我们调整了这两种发展方式，以评估LCIA中点和终点水平上由于土地占用和改造而造成的碎片化影响。结果和讨论与其他现有LCIA指标的比较表明，通过将碎片效应纳入研究，可以补充现有评估的巨大潜力。最后，通过环境署-SETAC土地利用LCIA工作组用于生物多样性影响评估模型的评估网格对这两种模型进行了讨论。结论成功地建立了中点和终点特征因子，包括了生境破碎化对LCIA中物种的影响。目前，已经为属于生物多样性热点的所有森林生态区中的鸟类提供了它们。需要开展进一步工作来开发所有分类单元和所有陆地生态区的特征因子。

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