The environmental performance of protecting seedlings with plastic tree shelters for afforestation in temperate oceanic regions: A UK case study.

The environmental performance of protecting seedlings with plastic tree shelters for afforestation in temperate oceanic regions: A UK case study.
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温带海洋地区造林用塑料树棚保护幼苗的环境绩效:英国案例研究。

DOI:
10.1016/j.scitotenv.2021.148239
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发表时间:
2021
期刊:
The Science of the total environment
影响因子:
--
通讯作者:
Chau C
Chau C
中科院分区:
--
文献类型:
--
作者:
Chau C

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恢复林地是通过加强从大气中清除温室气体来实现净零排放目标的有效战略。最常见的植树造林战略设想种植树苗,树苗在苗圃发芽并长到所需的年龄,并有塑料棚,以增加树木的生长和存活。本文提出了一个全面的生命周期评估(LCA)的研究,比较了当前和未来的情况下,庇护所辅助幼苗种植的环境性能相比,一个基本的情况下,庇护所没有雇用。这项研究的重点是英国,但结果和结论适用于其他温带海洋地区。所调查的情况是不同的避难所材料和报废(EoL)战略的组合。我们的分析表明,(i)在大多数环境影响类别(包括气候变化)中,种植幼苗而不使用遮蔽物是最可取的选择,就加权结果而言,(ii)聚丙烯遮蔽物优于生物基替代品,包括聚乳酸-淀粉共混物和生物聚丙烯,(iii)回收利用是最环保的EoL处理。我们的研究还表明,与一棵树在25年内吸收的碳量相比,所调查的情景的碳排放量可以忽略不计。
Restoration of forested land represents an effective strategy to achieve net-zero target emissions by enhancing the removal of greenhouse gases from the atmosphere. The most common afforestation strategy envisages planting seedlings, which are germinated and grown to the desired age at tree nurseries, with plastic shelters to increase growth and survival of trees. This article presents a comprehensive Life Cycle Assessment (LCA) study that compares the environmental performance of current and prospective scenarios for shelter-aided seedling planting compared with a base case where shelters are not employed. The study focuses on the UK, but results and conclusions are valid for other temperate oceanic regions. The scenarios investigated are a combination of different shelters materials and end-of-life (EoL) strategies. Our analysis demonstrates that (i) planting seedling without shelters is the most preferable option across most environmental impact categories (including Climate Change), and in terms of weighted results, (ii) polypropylene shelters are preferable to bio-based alternatives, including polylactic acid-starch blends and bio-polypropylene, (iii) recycling is the most environmentally advantageous EoL treatment. Our study also showed that that the carbon emissions of the scenarios investigated are negligible when compared to the amount of carbon sequestered by a tree in 25 years.
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