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- W2801782169 endingPage "e4623" @default.
- W2801782169 startingPage "e4623" @default.
- W2801782169 abstract "Background Fertilization as one of the measures in restoring degraded soil qualities has been introduced on arid steppes in recent decades. However, the fertilization use efficiency on arid steppes varies greatly between steppe types and years, enhancing uncertainties and risks in introducing fertilizations on such natural system to restore degraded steppes. Methods The experiment was a completely randomized design with five fertilization treatments, 0 (Control), 60 kg P ha −1 (P), 100 kg N ha −1 (N), 100 kg N ha −1 plus 60 kg P ha −1 (NP), and 4,000 kg sheep manure ha −1 (M, equaling 16.4 kg P ha −1 and 81.2 kg N ha −1 ). Soils were sampled from a degraded arid steppe which was consecutively applied with organic and inorganic fertilizers for three years. We analyzed the diversity and abundance of soil bacteria and fungi using high-throughput sequencing technique, measured the aboveground biomass, the soil chemical properties (organic carbon, available and total phosphorus, available and total nitrogen, and pH), and the microbial biomass nitrogen and microbial biomass carbon. Results In total 3,927 OTU (operational taxonomic units) for bacteria and 453 OTU for fungi were identified from the tested soils. The Ace and Chao of bacteria were all larger than 2,400, which were almost 10 times of those of fungi. Fertilizations had no significant influence on the richness and diversity of the bacteria and fungi. However, the abundance of individual bacterial or fungi phylum or species was sensitive to fertilizations. Fertilization, particularly the phosphorus fertilizer, influenced more on the abundance of the AMF species and colonization. Among the soil properties, soil pH was one of the most important soil properties influencing the abundance of soil bacteria and fungi. Discussion Positive relationships between the abundance of bacteria and fungi and the soil chemical properties suggested that soil bacteria and fungi communities in degraded steppes could be altered by improving the soil chemical properties through fertilizations. However, it is still not clear whether the alteration of the soil microbe community is detrimental or beneficial to the degraded arid steppes." @default.
- W2801782169 created "2018-05-17" @default.
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- W2801782169 date "2018-04-16" @default.
- W2801782169 modified "2023-09-26" @default.
- W2801782169 title "Effects of fertilizations on soil bacteria and fungi communities in a degraded arid steppe revealed by high through-put sequencing" @default.
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- W2801782169 doi "https://doi.org/10.7717/peerj.4623" @default.
- W2801782169 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/5907784" @default.
- W2801782169 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/29682416" @default.
- W2801782169 hasPublicationYear "2018" @default.
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