Moss Regeneration for lithium mine waste rock revegetation in Québec, Canada

IF 1 4区生物学 Q3 PLANT SCIENCES

Botany Pub Date : 2023-11-30 DOI:10.1139/cjb-2023-0110

Chao Liu, Kathy Pouliot, Sébastien Roy, L. Rochefort

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引用次数: 0

Abstract

Despite bryophytes being well adapted to various ecological settings, they are rarely considered in reclamation projects. In this study, propagation regenerative capabilities of bryophytes on different substrates (sand, amphibolite and pegmatite) and conditions (with or without peat amendment, shade and shredding) were tested in greenhouse and field experiments. In the greenhouse trial, after six months of reintroduction, Racomitrium species (Racomitrium canescens and R. elongatum) had higher regeneration compared to Polytrichum species (Polytrichum juniperinum mixed with P. piliferum; A combination of shade (65% shading) and peat amendment (0.5 cm depth) was found to be particularly effective, resulting in up to 100% of Racomitrium species regeneration; Shredding the stems of Polytrichum species into small pieces of 0.5 to 1.0 cm inhibited its regeneration. In the field trial, peat amendment had no effect on moss regeneration. The addition of fluvioglacial sand or till on waste rocks promoted bryophytes regeneration both in the greenhouse and field. These results provide science based, practical knowledge to support the inclusion of native bryophytes in waste rock restoration plans for mines located in northern boreal forests.

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苔藓再生用于加拿大魁北克锂矿废石的植被重建

尽管红叶植物能很好地适应各种生态环境，但在填海工程中却很少考虑到它们。本研究在温室和田间试验中，测试了在不同基质（沙、闪长岩和伟晶岩）和条件（有无泥炭添加剂、遮荫和粉碎）下，红叶石楠的繁殖再生能力。在温室试验中，经过 6 个月的重新引入，Racomitrium 物种（Racomitrium canescens 和 R. elongatum）的再生率高于 Polytrichum 物种（Polytrichum juniperinum 与 P. piliferum 混合；遮荫（65% 遮荫）和泥炭添加剂（0.5 厘米深）的组合特别有效，可使 Racomitrium 树种的再生率达到 100%；将 Polytrichum 树种的茎切成 0.5 至 1.0 厘米的小段会抑制其再生。在实地试验中，泥炭添加剂对苔藓再生没有影响。在温室和田间试验中，在废石上添加冰川砂或耕层可促进苔藓植物的再生。这些结果提供了以科学为基础的实用知识，支持在北部寒带森林矿山的废石恢复计划中纳入本地红叶石楠。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Botany 生物-植物科学

CiteScore

2.20

自引率

9.10%

发文量

期刊介绍： Botany features comprehensive research articles and notes in all segments of plant sciences, including cell and molecular biology, ecology, mycology and plant-microbe interactions, phycology, physiology and biochemistry, structure and development, genetics, systematics, and phytogeography. It also publishes methods, commentary, and review articles on topics of current interest, contributed by internationally recognized scientists.