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首页> 外文期刊>Ecological informatics: an international journal on ecoinformatics and computational ecology >Soil microbial community characteristics under different vegetation types at the national nature reserve of Xiaolongshan Mountains, Northwest China
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Soil microbial community characteristics under different vegetation types at the national nature reserve of Xiaolongshan Mountains, Northwest China

机译：西北夏龙山山国家自然保护区不同植被类型下的土壤微生物群落特征

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摘要

Microorganisms provide ecosystem services, such as decomposition and mineralization processes in forest soils. Quercus aliena var. acuteserrata and Larix kaempferi are the main natural forest and planted forest, respectively, in the national nature reserve of the Xiaolongshan Mountains of China. Understanding the composition and structure of soil microbial communities under these two typical vegetation types is critical for achieving effective management and sustainable utilization of the forest vegetation in the Xiaolongshan Mountain region. In this study, we analysed and compared the soil microbial communities of the Q. acuteserrata natural forest and L kaempferi planted forest using high-throughput sequencing technology, and cultivated land soil samples were selected as controls. The results indicated that soil nutrient contents and stoichiometric ratios (organic carbon to total nitrogen ratio (C:N), organic carbon to total phosphorus ratio (C:P) and nitrogen to phosphorus ratio (N:P)) were higher in the natural forest than in the planted forest and were lowest in the cultivated land. The soil bacterial community in the Q. acuteserrata natural forest had lower diversity indices than that in the L kaempferi planted forest and cultivated land, and the soil fungal community in the Q. acuteserrata natural forest had higher diversity indices than that in the cultivated land. Proteobacteria was more abundant in the natural forest soil with higher nutrient levels, and Acidobacteria was more abundant in the plantation forest soil with lower nutrient levels. Ascomycota abundance was lowest in the natural forest, and Basidiomycota abundance was lowest in the plantation forest. Microbial composition was sensitive to soil nutrients and the stoichiometric ratio, which explained 82.67% and 70.72% of the total variations in the soil bacterial and fungal community composition, respectively. There were significant differences in soil microbial community composition and structure between the natural forest and planted forest, and these changes were influenced by soil nutrient conditions. Total phosphorus (TP) may be an important factor regulating microbial community structure in different vegetation soil types.
机译：微生物提供生态系统服务，例如森林土壤中的分解和矿化过程。 Quercus Aliena var。 AcuteErrata和Larix Kaempferi分别是主要的天然森林和种植森林，在中国小龙山山脉的国家自然保护区。了解这两种典型植被类型下土壤微生物群落的组成和结构对于实现小龙山山区森林植被的有效管理和可持续利用至关重要。在这项研究中，我们分析并比较了Q.AcuteerRata天然森林和L Kaempferi使用高通量测序技术的土壤微生物群体，并选择了耕地土壤样品作为对照。结果表明，自然的土壤营养物质和化学计量比（组化学计量比（CO：N），有机碳与总磷比（C：P）和氮以磷比（N：P））较高森林比种植的森林，耕地中最低。 Q. Acuteerrata天然森林的土壤细菌群落具有较低的多样性指数，而不是在L Kaempferi种植的森林和耕地中，Q.Acuteerrata天然森林的土壤真菌群落具有比耕地的多样性指数更高。植物水平较高的天然林地植物植物在天然林土中更丰富，抗酸杆菌在种植植物林土中具有较低的营养水平。 Ascomycota丰富在天然森林中最低，底霉素丰度在种植园森林中最低。微生物组合物对土壤营养素和化学计量的比例敏感，分别解释了土壤细菌和真菌群落组合物总变化的82.67％和70.72％。天然林和种植林之间的土壤微生物群落组成和结构存在显着差异，这些变化受土壤养分条件的影响。总磷（TP）可能是不同植被土壤类型中的微生物群落结构的重要因素。

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