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首页> 外文期刊>Regional Environmental Change >Mitigation of greenhouse gas emissions from an abandoned Baltic peat extraction area by growing reed canary grass: life-cycle assessment
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Mitigation of greenhouse gas emissions from an abandoned Baltic peat extraction area by growing reed canary grass: life-cycle assessment

机译：通过生长芦苇金丝雀草减少波罗的海废弃的泥炭开采区的温室气体排放：生命周期评估

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摘要

Abandoned peat extraction areas are continuous emitters of GHGs; hence, abandonment of peat extraction areas should immediately be followed by conversion to an appropriate after-use. Our primary aim was to clarify the atmospheric impact of reed canary grass (RCG, Phalaris arundinacea L.) cultivation on an abandoned peat extraction area and to compare it to other after-treatment alternatives. We performed a life-cycle assessment for five different after-use options for a drained organic soil withdrawn from peat extraction: (Ⅰ) bare peat soil (no management), (Ⅱ) non-fertilised Phalaris cultivation, (Ⅲ) fertilised Phalaris cultivation, (Ⅳ) afforestation, and (Ⅴ) rewetting. Our results showed that on average the non-fertilised and fertilised Phalaris alternatives had a cooling effect on the atmosphere (-10,837 and -477 kg CO_2-eq ha~(-1) year~(-1), respectively), whereas afforestation, rewetting, and no-management alternatives contributed to global warming (9,511, 8,195, and 2,529 kg CO_2-eq ha~(-1) year~(-1), respectively). The main components influencing the global warming potential of different after-use alternatives were site GHG emissions, carbon assimilation by plants, and emissions from combustion, while management-related emissions played a relatively minor role. The results of this study indicate that, from the perspective of atmospheric impact, the most suitable after-use option for an abandoned peat extraction area is cultivation of RCG.
机译：废弃的泥炭提取区域是温室气体的连续排放者。因此，废弃泥炭提取区域后应立即转换为适当的使用后。我们的主要目的是弄清芦苇金丝雀草（RCG，Phalaris arundinacea L.）种植对废弃的泥炭提取区的大气影响，并将其与其他后处理替代品进行比较。我们对从泥炭提取中抽出的排水有机土壤进行了五种不同的使用后选择方案的生命周期评估：（Ⅰ）泥炭裸土（无管理），（Ⅱ）未施肥的ala草栽培，（Ⅲ）施肥的ala草栽培，（Ⅳ）造林和（Ⅴ）重新湿润。我们的结果表明，平均而言，未施肥和施肥的Ph草替代品对大气具有降温作用（分别为-10,837和-477 kg CO_2-eq ha〜（-1）年〜（-1）），而造林，再湿润和无管理措施导致了全球变暖（分别为9,511、8,195和2,529千克CO_2当量ha〜（-1）年〜（-1））。影响不同使用后替代品的全球变暖潜能的主要因素是现场温室气体排放，植物的碳同化和燃烧产生的排放，而与管理相关的排放则发挥了相对较小的作用。这项研究的结果表明，从大气影响的角度来看，废弃的泥炭提取区最合适的使用后选择是种植RCG。

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  • 来源
    《Regional Environmental Change》 |2013年第4期|781-795|共15页
  • 作者

    Jaervi Jaerveoja; Janika Laht; Martin Maddison; Kaido Soosaar; Ivika Ostonen; UElo Mander;

  • 作者单位

    Department of Geography, Institute of Ecology and Earth Sciences, University of Tartu, Vanemuise 46, 51014 Tartu, Estonia;

    Department of Geography, Institute of Ecology and Earth Sciences, University of Tartu, Vanemuise 46, 51014 Tartu, Estonia;

    Department of Geography, Institute of Ecology and Earth Sciences, University of Tartu, Vanemuise 46, 51014 Tartu, Estonia;

    Department of Geography, Institute of Ecology and Earth Sciences, University of Tartu, Vanemuise 46, 51014 Tartu, Estonia;

    Department of Geography, Institute of Ecology and Earth Sciences, University of Tartu, Vanemuise 46, 51014 Tartu, Estonia;

    Department of Geography, Institute of Ecology and Earth Sciences, University of Tartu, Vanemuise 46, 51014 Tartu, Estonia;

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  • 正文语种 eng
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  • 关键词

    Bioenergy crops; Carbon dioxide; LCA; Methane; Nitrous oxide; Peatlands;

    机译：生物能源作物;二氧化碳;LCA;甲烷笑气;泥炭地;

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