Abstract
Background and aims
The problem of desertification is becoming increasingly serious in the Zoige Plateau. How to carry out vegetation restoration more efficiently in desertified area has been a hotspot. This study aims to improve the vegetation restoration capacity in the desertified area of Zoige Plateau.
Methods
In this study, Elymus sibiricus, Elymus dahuricus Turcz and Avena sativa were used as restoration plants in desertified areas. The application concentrations of palygorskite fertilizers (PF), bacterial fertilizers (BF) and phyto-hormones were determined by orthogonal test. The restoration effects were determined based on the fractional vegetation cover (FVC), soil physicochemical properties and soil microbial community after restoration.
Results
The results showed that FVC was improved in desertified lands through the addition of PF, BF and phyto-hormones, and the best performance of the combined application improved the FVC up to 67.9%. Meanwhile, the contents of available phosphorus and available nitrogen were also significantly increased compared with the control. Moreover, 16S sequencing analysis showed that Flavobacteria and Herbaspirillum were increased in the plots with high FVC compared to the ones in the control (p < 0.05). Functional prediction by using Tax4Fun revealed that the KEGG pathways of bacteria in the plots with high FVC were enriched for oxidation and amino associated enzymes.
Conclusion
The addition of fertilizers and phytohormones improves FVC in desertified areas, and this improvement may be caused by increased soil nutrients and some functional soil microorganisms.
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Data availability
The data that support the findings of this study are available from the corresponding author upon reasonable request.
Change history
21 July 2023
A Correction to this paper has been published: https://doi.org/10.1007/s11104-023-06178-1
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Huang, J., Shi, Y., Li, B. et al. The effects of combined application of chemical fertilizer, functional bacteria and plant hormones on vegetation restoration of desertification land in Zoige Plateau. Plant Soil 491, 355–368 (2023). https://doi.org/10.1007/s11104-023-06116-1
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DOI: https://doi.org/10.1007/s11104-023-06116-1