Changes in composition and function of soil microbial communities during secondary succession in oldfields on the Tibetan Plateau
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Changes in composition and function of soil microbial communities during secondary succession in oldfields on the Tibetan Plateau. / Ma, Hui; Yan, Xiaoping; Gao, Erliang; Qiu, Yizhi; Sun, Xiaofei; Wang, Sheng; Wang, Yuxian; Bruun, Hans Henrik; He, Zhibin; Shi, Xiaoming; Zhao, Zhigang.
In: Plant and Soil, Vol. 495, 2024, p. 429–443.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Changes in composition and function of soil microbial communities during secondary succession in oldfields on the Tibetan Plateau
AU - Ma, Hui
AU - Yan, Xiaoping
AU - Gao, Erliang
AU - Qiu, Yizhi
AU - Sun, Xiaofei
AU - Wang, Sheng
AU - Wang, Yuxian
AU - Bruun, Hans Henrik
AU - He, Zhibin
AU - Shi, Xiaoming
AU - Zhao, Zhigang
N1 - Publisher Copyright: © 2023, The Author(s), under exclusive licence to Springer Nature Switzerland AG.
PY - 2024
Y1 - 2024
N2 - Aim: Soil microbes can significantly influence restoration outcomes via interaction with plant community assembly processes, yet knowledge about variation in soil microbial communities – in particular functional variation – during oldfield succession is limited. Methods: We divided a well-dated successional chronosequence on the Tibetan Plateau into five stages: stage 1 (continued arable land), stage 2 (arable abandoned for 2 years), stage 3 (arable abandoned for 10 years), stage 4 (arable abandoned for 20 years), and natural grassland. We investigated the changes in taxonomic and functional composition of bacterial and fungal communities in these successional stages. Results: The richness of bacterial and fungal communities had a unimodal relationship with successional age, as the both were initially low and decreased again in natural grasslands. These changes were more correlated to soil properties. For both bacterial and fungal communities, taxonomic similarity to natural grasslands increased monotonously with successional age. The functional composition of bacterial communities shifted with successional age towards increased importance of strains involved in the C cycle rather than the N cycle, due to higher plant richness. For fungal communities, saprotrophs showed an increasing trend with successional age although low relative abundance in natural grasslands, which was regulated by belowground biomass. Symbiotrophs did not change during succession, but pathotrophic fungal relative abundance decreased rapidly after agricultural abandonment because of increased plant richness. Conclusions: Overall, twenty years of oldfield succession did not appear to restore richness of soil bacterial and fungal communities to the levels of natural grasslands. Community taxonomic and functional composition in successional stages up to 20 y old were also different from natural grasslands. Our results suggest more important role of plant community than microbial community to soil nutrient cycling during restoration in oldfields.
AB - Aim: Soil microbes can significantly influence restoration outcomes via interaction with plant community assembly processes, yet knowledge about variation in soil microbial communities – in particular functional variation – during oldfield succession is limited. Methods: We divided a well-dated successional chronosequence on the Tibetan Plateau into five stages: stage 1 (continued arable land), stage 2 (arable abandoned for 2 years), stage 3 (arable abandoned for 10 years), stage 4 (arable abandoned for 20 years), and natural grassland. We investigated the changes in taxonomic and functional composition of bacterial and fungal communities in these successional stages. Results: The richness of bacterial and fungal communities had a unimodal relationship with successional age, as the both were initially low and decreased again in natural grasslands. These changes were more correlated to soil properties. For both bacterial and fungal communities, taxonomic similarity to natural grasslands increased monotonously with successional age. The functional composition of bacterial communities shifted with successional age towards increased importance of strains involved in the C cycle rather than the N cycle, due to higher plant richness. For fungal communities, saprotrophs showed an increasing trend with successional age although low relative abundance in natural grasslands, which was regulated by belowground biomass. Symbiotrophs did not change during succession, but pathotrophic fungal relative abundance decreased rapidly after agricultural abandonment because of increased plant richness. Conclusions: Overall, twenty years of oldfield succession did not appear to restore richness of soil bacterial and fungal communities to the levels of natural grasslands. Community taxonomic and functional composition in successional stages up to 20 y old were also different from natural grasslands. Our results suggest more important role of plant community than microbial community to soil nutrient cycling during restoration in oldfields.
KW - Abandoned farmland
KW - Alpine grassland
KW - Ecological restoration
KW - Functional groups
KW - Microbial community structure
KW - Succession
U2 - 10.1007/s11104-023-06336-5
DO - 10.1007/s11104-023-06336-5
M3 - Journal article
AN - SCOPUS:85174288314
VL - 495
SP - 429
EP - 443
JO - Plant and Soil
JF - Plant and Soil
SN - 0032-079X
ER -
ID: 372185368