内蒙古农牧交错带农田与草地土壤真菌群落特征差异性分析

doi:10.12190/j.issn.2096-1197.2022.02.05

Abstract

Abstract: 【Objective】To better understand the differences in soil fungal community structure and diversity between farming and grassland ecosystems in Inner Mongolia agro-pastoral ecotone.【Methods】The soil microorganisms in large area of farmland and grassland in the agro-pastoral ecotone of Inner Mongolia were sequenced using high throughput sequencing technology. The differences in soil fungal community structure and diversity between farmland and grassland in each ecological area were systematically analyzed.【Results】The dominant fungi in farmland and grassland soils were Ascomycota,Basidiomycota and Mortierellomycota. The total abundance of Ascomycota and Mortierellomycota in farmland soil was higher than that in grassland,while the total abundance of Basidiomycota in grassland soil was higher than that in farmland. The soil fungi α diversity index in grassland was higher than that in farmland. The soil α diversity index of farmland and grassland was high in the south foothill of Daxing′anling. According to the β diversity index analysis,the fungal distribution of farmland soil fungal community was significantly affected by crop types and geographical location. Basidiomycota,Olpidiomycot and Ascomycota are the marker species for inter group variations between farmland soil fungal groups. While the marker species for inter group differences between grassland soil fungal groups are Basidiomycota,Olpidiomycot,Glomeromycota and Mortierellomycota.【Conclusion】The number of fungal species in grassland soil was significantly higher than in farmland soil. In the south foothill of Daxing′anling,the diversity of farmland and grassland soil fungal communities was high.

Key words: Inner Mongolia, Agro-pastoral ecotone, Farmland, Grassland, Soil Fungi, Community structure, Diversity index

CLC Number:

S154.3

HAN Li, LI Lijun, ZHAO Ju, ZHANG Yanli, YIN Chunyan, SHA Song. Characteristics of soil fungal community in farmland-grassland of Inner Mongolia agro-pastoral ecotone[J].Journal of Northern Agriculture, 2022, 50(2): 38-46.

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https://journal30.magtechjournal.com/bfnyxb/EN/Y2022/V50/I2/38

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Characteristics of soil fungal community in farmland-grassland of Inner Mongolia agro-pastoral ecotone

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