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来自生物基生长媒介的温室气体排放:生命周期评估

Fatemeh Hashemi¹, Lisbeth Mogensen², Aidan Mark Smith³

¹Department of Agroecology, Aarhus University, Blichers Allé 20, 8830 Tjele, Denmark; Aarhus University Interdisciplinary Centre for climate change (iCLIMATE), Department of Agroecology, Blichers Alle 20, 8830 Tjele, Denmark.

The Science of the total environment

|October 24, 2023

概括

用木纤维和堆肥等生物基替代品取代泥炭可以显著减少温室气体排放. 即使是25%的混合物也为生长媒介提供了相当大的气候效益.

科学领域:

环境科学环境科学
可持续农业可持续农业
生命周期评估生命周期评估

背景情况:

用于生长媒介的泥炭开采有助于温室气体排放.
园艺中对泥炭的可持续替代品的需求越来越大.

研究的目的:

通过使用生命周期评估 (LCA) 方法评估生物基泥炭替代品在减少温室气体排放方面的潜力.
为了比较各种泥炭替代品及其与泥炭混合物的气候足迹.

主要方法:

生命周期评估 (LCA) 用于1立方米生长介质的功能单位.
从个人沟通和文献中获得的前景数据与Ecoinvent V3.8背景数据相结合.
系统边界从摇篮开始被定义为作为生长媒介的使用.

主要成果:

所有测试的泥炭替代品显示,与泥炭相比,全球变暖潜力显著降低,从89%到109%不等.
将25%的生物基替代品纳入泥炭混合物中,使气候足迹减少了16%至33%.
泥炭替代品的有效性取决于原料选择,加工和最终使用排放.

结论:

生物基的泥炭替代品为减少植物生产中的温室气体排放提供了可观的前景.
提高与泥炭混合物中生物成分的比例,以实现100%的替代是非常重要的.
该研究强调了从泥炭过渡到可持续生长媒介的环境益处.

关键词:

来自农业废物的脱气纤维.挤出的柳树木纤维纤维.温室气体排放的温室气体排放量生命周期评估生命周期评估基于柳的堆肥是基于柳的堆肥.基于柳树的碳化合物.

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