Abstract
Agroforestry practices aim to achieve environmentally friendly land use. Fungi play a primarily role in soil organic carbon and nutrient maintenance, while the response of the soil fungi community to land use changes is little explored. Here, a high-throughput sequencing method was applied to understand the fungal community structure distinction in ginkgo agroforestry systems and adjacent croplands and nurseries. Our results showed that the agroforestry systems achieved better soil fertility and carbon contents. The agroforestry practices significantly altered the composition of soil fungal communities comparing with pure gingko plantation, adjacent cropland, and nursery. The dominant fungal phyla were always Ascomycota and Basidiomycota. The relative abundance of Ascomycota was correlated with the TN and AP, while the abundance of Basidiomycota was negatively correlated with the TN and NN. The soil organic carbon, total nitrogen, and nitrate nitrogen explained 59.80% and 63.36% of the total variance in the fungal community composition in the topsoil and subsoil, and the available phosphorus also played a key role in the topsoil. Considering soil fertility maintenance and fungal community survival and stability, the agroforestry systems achieved better results, and the ginkgo and wheat system was the best among the five planting systems we studied. In the ginkgo and wheat system, applying readily available mineral nitrogen fertilizer either alone or in combination with organic amendments will improve the soil quality and fertility.
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This work was supported by the Agricultural Science and Technology Independent Innovation Funds of Jiangsu Province (CX(16)1005), the National Key Research and Development Program of China (2017YFD0600700), the Priority Academy Program Development of Jiangsu Higher Education Institution (PAPD), the Postgraduate Research and Practice Innovation Program of Jiangsu Province (KYCX18_0955), and the Doctorate Fellowship Foundation of Nanjing Forestry University.
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Guo, J., Wang, G., Wu, Y. et al. Ginkgo agroforestry practices alter the fungal community structures at different soil depths in Eastern China. Environ Sci Pollut Res 26, 21253–21263 (2019). https://doi.org/10.1007/s11356-019-05293-w
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DOI: https://doi.org/10.1007/s11356-019-05293-w