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Quantifying Area Changes of Internationally Important Wetlands Due to Water Consumption in LCA

机译:LCA中由于用水引起的国际重要湿地面积变化的量化

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摘要

Wetlands harbor diverse species assemblages but are among the world's most threatened ecosystems. Half of their global area was lost during the last century. No approach currently exists in life cycle impact assessment that acknowledges the vulnerability and importance of wetlands globally and provides fete factors for water consumption. We use data from 1184 inland wetlands, all designated as sites of international importance under the Ramsar Convention, to develop regionalized fete factors (FF) for consumptive water use. FFs quantify the change of wetland area caused per m~3/yr water consumed. We distinguish between surface water-fed and groundwater-fed wetlands and develop FFs for surface water and groundwater consumption. FFs vary over 8 (surface water-fed) and 6 (groundwater-fed) orders of magnitude as a function of the site characteristics, showing the importance of local conditions. Largest FFs for surface water-fed wetlands generally occur in hyper-arid zones and smallest in humid zones, highlighting the dependency on available surface water Bows. FFs for groundwater-fed wetlands depend on hydrogeological conditions and vary largely with the total amount of water consumed from the aquifer. Our FFs translate water consumption into wetland area loss and thus become compatible with life cycle assessment methodologies of land use.
机译:湿地拥有各种物种,但它们是世界上受威胁最大的生态系统之一。在上个世纪,他们失去了全球一半的土地。在生命周期影响评估中,目前尚没有一种方法能够认识到全球湿地的脆弱性和重要性,并提供耗水量的提要因素。我们使用来自1184个内陆湿地的数据(根据《拉姆萨尔公约》均被指定为具有国际重要性的站点)来开发消耗性水资源的区域化指标。 FFs量化了每m〜3 / yr耗水量引起的湿地面积变化。我们将地表水养分和地下水养分的湿地区分开来,并为地表水和地下水的消耗量开发FF。 FFs随场地特征变化超过8个(地表水)和6个(地下水地)数量级,显示了当地条件的重要性。地表水养湿地的最大果蝇一般发生在高干旱地区,最小地出现在湿地,这突出了对可用地表水弓的依赖。地下水喂养的湿地的FFs取决于水文地质条件,并随着含水层消耗的水量的不同而有很大差异。我们的合作社将耗水量转化为湿地面积的损失,因此与土地利用的生命周期评估方法兼容。

著录项

  • 来源
    《Environmental Science & Technology》 |2013年第17期|9799-9807|共9页
  • 作者单位

    ETH Zurich, Institute of Environmental Engineering, 8093 Zurich, Switzerland;

    ETH Zurich, Institute of Environmental Engineering, 8093 Zurich, Switzerland;

    ETH Zurich, Institute of Environmental Engineering, 8093 Zurich, Switzerland;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
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