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| Responses of soil fungal communities to different degrees of degradation in Bayinbuluk alpine wetland, China |
| Received:November 29, 2021 |
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| KeyWord:alpine wetland;degradation;fungal;community diversity;community composition |
| Author Name | Affiliation | E-mail | | Maidinuer·ABULAIZI | College of Resources and Environment, Xinjiang Agricultural University, Urumqi 830052, China | | | CHEN Mo | College of Grassland Science, Xinjiang Agricultural University, Urumqi 830052, China | | | YANG Zailei | College of Resources and Environment, Xinjiang Agricultural University, Urumqi 830052, China
Key Laboratory of Soil and Plant Ecological Process in Xinjiang, Urumqi 830052, China | | | YU Guangling | College of Resources and Environment, Xinjiang Agricultural University, Urumqi 830052, China | | | HU Yang | College of Resources and Environment, Xinjiang Agricultural University, Urumqi 830052, China | | | JIA Hongtao | College of Resources and Environment, Xinjiang Agricultural University, Urumqi 830052, China
Key Laboratory of Soil and Plant Ecological Process in Xinjiang, Urumqi 830052, China | jht@xjau.edu.cn |
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| Abstract: |
| Exploring the response of soil fungal community to degradation in Bayinbuluk alpine wetland is of great significance to the study of wetland degradation mechanisms. In this research, the non-degraded(ND), slightly degraded(SD), and severely degraded(HD)regions of Bayinbuluk alpine wetland were used as the research objects. The diversity and structural differences of soil fungal communities in differently degraded alpine wetlands were analyzed by high-throughput sequencing technology, and the environmental factors affecting fungal communities were further analyzed in combination with physicochemical indexes. The results showed that there was no significant difference in Simpson and Shannon diversity indexes between the ND and HD areas(P>0.05). However, the Simpson index in the SD area were significantly higher than that in the ND and HD areas, while the Shannon index were significantly lower than in the ND and HD areas (P<0.05). ACE and Chao1 richness indexes of fungal communities decreased with increasing degradation. At phylum level, the relative abundance of Ascomycota was the highest, whereas Sordariomycetes showed the highest relative abundance in three regions at the class level. The relative abundance of the orders Hypocreales, Pleosporales, and Mortierellales increased with the degree of degradation. At the genus level, Clavaria and Magnaporthe were the dominant fungal communities. LEfSe analysis found 11 potential biomarkers that could be used as indicators of degradation. Redundancy analysis and Monte Carlo test showed that the changes in fungal community structure at the phylum level were not significantly affected by environmental factors(P<0.05); At the genus level, changes in fungal community structure are only significantly affected by total organic carbon(P<0.05). The degradation of alpine wetland significantly changed soil pH, soil moisture content, total organic carbon, bulk density, and other physicochemical indexes, affecting the diversity and structure of fungal communities. |
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