In urban areas, pre‐existing concrete‐based demolition wastes and purposely introduced crushed dolerite have been used to create artificial soils, which capture carbon (C) as carbonate minerals and offset greenhouse gas (GHG) emissions. Arbuscular mycorrhizal fungi (AMF) can enhance capture of C in artificial soils through production of glomalin‐related soil protein (GRSP), which facilitates soil organic carbon (SOC) storage and aggregation, and may also enhance precipitation of soil inorganic carbon (SIC). In this paper, we show how different mixtures of dolerite and concrete affect AMF community structure and function, GRSP fractions, and soil organic and inorganic carbon contents. We used nine demonstration plots, 1 m deep, to simulate a constructed urban soil, consisting of different proportions (0, 30, 50, 70 and 100%) of either crushed concrete demolition waste or dolerite quarry fines and sown to a species‐rich meadow mixture, to investigate AMF colonization and community structure (using DNA terminal restriction fragment length polymorphism), contents of easily‐extractable and difficultly‐extractable GRSP, and both organic and inorganic carbon contents. All artificial soils supported functioning AMF communities with different levels of GRSP, SIC and SOC. The 100% dolerite and 100% concrete soils had higher values of difficultly‐to‐extract GRSP andSOC than pure sand, whereas 100% concrete had higher AMF colonization and SOC than sand. AMF community analysis indicated that high GRSP producing species were abundant in 100% dolerite and 100% concrete. These findings demonstrate that there is potential to incorporate demolition waste or dolerite products into the land to support environmental sustainability and enhance soil C sequestration.

中文翻译：

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丛枝菌根真菌和gloomalin相关土壤蛋白促进人工硅酸盐土壤中的碳固存

在城市地区，已经使用了预先存在的混凝土拆除废物和故意引入的碎白云石来制造人造土壤，这些人造土壤捕获了碳酸盐（C）作为碳酸盐矿物并抵消了温室气体（GHG）的排放。丛枝菌根真菌（AMF）可以通过产生与草甘膦相关的土壤蛋白（GRSP）来增强人工土壤中C的捕获，从而促进土壤有机碳（SOC）的存储和聚集，还可以增强土壤无机碳（SIC）的沉淀。在本文中，我们显示了不同的针铁矿和混凝土混合物如何影响AMF群落结构和功能，GRSP分数以及土壤有机碳和无机碳含量。我们使用了1个深度为1 m的9个示范区来模拟由不同比例（0、30、50，将破碎的混凝土拆除废料或白云石采石场的细粉中的70％和100％）播种到物种丰富的草甸混合物中，以研究AMF的定殖和群落结构（使用DNA末端限制片段长度多态性），易提取且难于提取的含量可提取的GRSP，以及有机和无机碳含量。所有人造土壤均支持具有不同水平的GRSP，SIC和SOC的功能性AMF社区。100％的钙铝石和100％的混凝土比纯砂具有更高的难提取GRSP和SOC值，而100％的混凝土具有比砂更高的AMF菌落和SOC。AMF群落分析表明，高GRSP产生物种在100％的白云石和100％的混凝土中含量很高。