A substantial amount of below-ground carbon (C) is suggested to be associated with fungi, which may significantly affect the soil C balance in forested ecosystems. Ergosterol from in-growth mesh bags and litterbags was used to estimate fungal biomass production and community composition in drained peatland forests with differing fertility. Extramatrical mycelia (EMM) biomass production was generally higher in the nutrient-poor site, increased with deeper water table level and decreased along the length of the recovery time. EMM biomass production was of the same magnitude as in mineral-soil forests. Saprotrophic fungal biomass production was higher in the nutrient-rich site. Both ectomycorrhizal (ECM) and saprotrophic fungal community composition changed according to site fertility and water table level. ECM fungal community composition with different exploration types may explain the differences in fungal biomass production between peatland forests. Melanin-rich Hyaloscypha may indicate decreased turnover of biomass in nutrient-rich young peatland forest. Genera Lactarius and Laccaria may be important in nutrient rich and Piloderma in the nutrient-poor conditions, respectively. Furthermore, Paxillus involutus and Cortinarius sp. may be important generalists in all sites and responsible for EMM biomass production during the first summer months. Saprotrophs showed a functionally more diverse fungal community in the nutrient-rich site.

中文翻译：

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场地肥力和土壤地下水位影响北方泥炭地森林的真菌生物量和群落组成

大量的地下碳（C）被认为与真菌有关，这可能会显着影响森林生态系统中的土壤碳平衡。来自生长网袋和垃圾袋的麦角甾醇用于估计具有不同肥力的排水泥炭地森林中的真菌生物量产量和群落组成。基质外菌丝体 (EMM) 生物量在营养贫乏地区普遍较高，随着地下水位的增加而增加，随着恢复时间的延长而减少。EMM 生物量产量与矿物土壤森林的产量相同。在营养丰富的地点，腐生真菌生物量的产量较高。外生菌根 (ECM) 和腐生真菌群落组成都根据场地肥力和地下水位而变化。不同勘探类型的 ECM 真菌群落组成可以解释泥炭地森林之间真菌生物量产生的差异。富含黑色素Hyaloscypha可能表明营养丰富的年轻泥炭地森林中生物量的周转减少。Lactarius 属和Laccaria属可能分别在营养丰富和Piloderma中在营养贫乏的条件下很重要。此外，Paxillus involutus和Cortinarius sp。可能是所有地点的重要通才，并在最初的夏季月份负责 EMM 生物质生产。Saprotrophs 在营养丰富的地点显示出功能更多样化的真菌群落。