Microbial abundance as an indicator of soil carbon and nitrogen nutrient in permafrost peatlands
Microbial abundance as an indicator of soil carbon and nitrogen nutrient in permafrost peatlands
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微生物丰度作为多年冻土泥炭地土壤碳和氮养分的指标
DOI：
10.1016/j.ecolind.2020.106362
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发表时间：
2020-08
影响因子：
6.9
通讯作者：
Changchun Song
中科院分区：
文献类型：
--
作者：
Yanyu Song;Chao Liu;Xianwei Wang;Xiuyan Ma;Lei Jiang;Jianping Zhu;Jinli Gao;Changchun Song
土壤微生物丰度与土壤特性和加工速度有关，是土壤健康和质量变化的早期指标。然而，对多年冻土泥炭地土壤中的微生物功能群的研究很少。这些土壤是重要的碳氮库，可能容易受到气候变暖的影响。随机采集了中国东北零星海岛、不连续海岛和连续多年冻土区10个泥炭地的表层土壤(0~15 cm和15~30 cm土层)。目的是弄清不同类型多年冻土泥炭地土壤微生物丰度分布。结果表明，多年冻土类型对泥炭地不同土壤C-和N-循环微生物丰度的影响不同。在不连续的海岛多年冻土泥炭地，细菌、amoA和nirK基因在两个土层中的丰度最高。连续型和非连续型海岛多年冻土泥炭地0~15 cm土层中SoilmcrA和pmoA基因丰度较高。在不连续的海岛多年冻土泥炭地，TheamoA基因在两个土层中的丰度和NirS基因在15-30 cm土层中的丰度都很高。两层土壤中irK基因平均丰度大小顺序为：不连续海岛多年冻土泥炭地>连续多年冻土泥炭地>零星海岛多年冻土泥炭地。不同类型的多年冻土泥炭地在两个土层中的古生物丰度没有显著差异。土壤氨氮、pH和全碳对土壤微生物丰度变化的贡献率分别为42.5%、15.9%和15.3%。研究结果表明，土壤微生物丰度可以作为多年冻土泥炭地土壤N有效性、C库和pH的有效指标。
Soil microbial abundance, which is related to soil characteristics and process rates, is an early indicator of changes in soil health and quality. However, microbial functional groups in permafrost peatland soils have rarely been studied. These soils are important C and N stores and possibly vulnerable to climate warming. We randomly gathered surface soils (0–15 cm and 15–30 cm soil layers) from 10 peatlands in sporadic island, discontinuous island, and continuous permafrost regions in Northeast China. The aim was to clarify the soil microbial abundance distribution in different types of permafrost peatlands. Results revealed different effects of permafrost types on different soil C- and N-cycling microbial abundances in peatlands. The bacteria,amoA, andnirK gene abundances in the two soil layers were the highest in discontinuous island permafrost peatlands. SoilmcrA andpmoA gene abundances in 0–15 cm soil were high in continuous and discontinuous island permafrost peatlands, respectively. TheamoA gene abundance in both soil layers andnirS gene abundance in 15–30 cm soil were high in discontinuous island permafrost peatlands. The averagenirK gene abundance in both soil layers was in the order: discontinuous island permafrost peatlands > continuous permafrost peatlands > sporadic island permafrost peatlands. No significant differences in archaeal abundance were observed in both soil layers among the different types of permafrost peatlands. Moreover, 42.5%, 15.9%, and 15.3% of the variation in soil microbial abundances could be explained by soil ammonia-N, pH, and total C, respectively. Our results imply that soil microbial abundance can be utilized as effective soil N availability, C pool, and pH indicators in permafrost peatlands.
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影响因子：
3.7
作者：
Zhang Z;Zhou X;Tian L;Ma L;Luo S;Zhang J;Li X;Tian C
通讯作者：
Tian C
影响因子：
64.8
作者：
McCalley, Carmody K.;Woodcroft, Ben J.;Saleska, Scott R.
通讯作者：
Saleska, Scott R.
DOI：
10.1127/archiv-hydrobiol/154/2002/561
发表时间：
2002-08
期刊：
Archiv Fur Hydrobiologie
影响因子：
--
作者：
C. Blodau;C. Roehm;T. Moore
通讯作者：
C. Blodau;C. Roehm;T. Moore
影响因子：
4.6
作者：
Espenberg M;Truu M;Mander Ü;Kasak K;Nõlvak H;Ligi T;Oopkaup K;Maddison M;Truu J
通讯作者：
Truu J
影响因子：
4.4
作者：
S. Hallin;P. Lindgren
通讯作者：
S. Hallin;P. Lindgren