Phosphorus addition regulates the responses of soil multifunctionality to nitrogen over-fertilization in a temperate grassland

Cui, Haiying; Sun, Wei; Delgado‐Baquerizo, Manuel; Song, Wenzheng; Ma, Jing; Wang, Keying; Ling, Xiaoli

doi:10.1007/s11104-020-04620-2

Cited by 38 publications

(15 citation statements)

References 55 publications

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“…The levels of N and P added exceeded the natural deposition rates of these nutrients in East Asia (Cui et al, 2020b;H. Yang et al, 2012), but conformed to predictions of N and P deposition from land use change and atmosphere (Cui et al, 2020b). In the early summer months, NH 4 NO 3 and Ca(H 2 PO4) 2 were inputted by manual work and distributed after sunset (when soil moisture levels were higher).…”

Section: Experimental Designsupporting

confidence: 66%

“…The buffer zones around the plots and blocks measured 1 m. The following treatments were combined in a cross factorial experiment: application of 0 or 10 g N m -2 *year -1 (NH 4 NO 3 ), application of 0 or 10 g P m -2 *year -1 [Ca(H 2 PO4) 2 ] and application of fungicide to suppress mycorrhizal fungi [12 g benomyl (50% active substance) in 10 L of deionized water per m 2 ] or plain water. The levels of N and P added exceeded the natural deposition rates of these nutrients in East Asia (Cui et al, 2020b;H. Yang et al, 2012), but conformed to predictions of N and P deposition from land use change and atmosphere (Cui et al, 2020b).…”

Section: Experimental Designsupporting

confidence: 64%

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Inter-annual precipitation fluctuation shapes plant communities regardless of fertilization addition and mycorrhizal suppression in desert steppe

Yang

Zang

Feng

et al. 2022

Preprint

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Intensified inter-annual precipitation fluctuation has profoundly altered the structure and functioning of grassland ecosystems. However, it remains elusive how fertilisation and arbuscular mycorrhizal (AM) fungi affect plant communities under a variable precipitation regime. We tested the interactive effects of inter-annual precipitation fluctuation, nutrient addition (nitrogen, N and phosphorus, P) and suppression of AM fungi on aboveground net primary productivity (ANPP) and the species composition of plant community of a desert steppe for two consecutive years (2019 and 2020). Our study demonstrated that inter-annual precipitation fluctuation had a greater impact on ANPP and the species composition of plant community than N and P addition and AM fungi, suggesting that the impacts of fertilisation and AM fungi varied by year and may be difficult to predict over time. In a normal year (2019), N and P inputs altered the ANPP and the species composition of plant community via enhancing the biomass and dominance of annual species but had few impacts on the same parameters in a dry year (2020). AM fungi had only a minimal effect on plant communities across the two years. P input alone slightly enhanced plant species richness and diversity. Our results indicate that plant community responses to nutrient enrichment and AM fungi could be changed by inter-annual precipitation fluctuation and that precipitation is a key factor affecting plant communities in desert steppe.

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Section: Experimental Designsupporting

confidence: 66%

Section: Experimental Designsupporting

confidence: 64%

Inter-annual precipitation fluctuation shapes plant communities regardless of fertilization addition and mycorrhizal suppression in desert steppe

Yang

Zang

Feng

et al. 2022

Preprint

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“…Soil multifunctionality was quantified based on ten soil functions widely adopted in previous studies [ 51 , 52 , 53 , 54 , 55 ]. These parameters are related to organic matter decomposition, climate regulation, and nutrient cycling, including αG, βG, βX, CBH, LAP, NAG, Nn, Nm, ALP, and AP.…”

Section: Methodsmentioning

confidence: 99%

Plant Diversity and Fungal Richness Regulate the Changes in Soil Multifunctionality in a Semi-Arid Grassland

Liu

Zhang

et al. 2022

Biology

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Loss in plant diversity is expected to impact biodiversity and ecosystem functioning (BEF) in terrestrial ecosystems. Soil microbes play essential roles in regulating ecosystem functions. However, the important roles and differences in bacterial and fungal diversity and rare microbial taxa in driving soil multifunctionality based on plant diversity remain poorly understood in grassland ecosystems. Here, we carried out an experiment in six study sites with varied plant diversity levels to evaluate the relationships between soil bacterial and fungal diversity, rare taxa, and soil multifunctionality in a semi-arid grassland. We used Illumina HiSeq sequencing to determine soil bacterial and fungal diversity and evaluated soil functions associated with the nutrient cycle. We found that high diversity plant assemblages had a higher ratio of below-ground biomass to above-ground biomass, soil multifunctionality, and lower microbial carbon limitation than those with low diversity. Moreover, the fungal richness was negatively and significantly associated with microbial carbon limitations. The fungal richness was positively related to soil multifunctionality, but the bacterial richness was not. We also found that the relative abundance of saprotrophs was positively correlated with soil multifunctionality, and the relative abundance of pathogens was negatively correlated with soil multifunctionality. In addition, the rare fungal taxa played a disproportionate role in regulating soil multifunctionality. Structural equation modeling showed that the shift of plant biomass allocation patterns increased plant below-ground biomass in the highly diverse plant plots, which can alleviate soil microbial carbon limitations and enhance the fungal richness, thus promoting soil multifunctionality. Overall, these findings expand our comprehensive understanding of the critical role of soil fungal diversity and rare taxa in regulating soil multifunctionality under global plant diversity loss scenarios.

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“…Multifunctionality refers here to a panel of enzymatic activities viewed as proxies of functions allowed by different kinds of microbial communities, i.e. an approach that has been used in many previous studies (Luo et al, 2018;Cui et al, 2020a;Li et al, 2021b).…”

Section: Introductionmentioning

confidence: 99%

Biochar addition regulates soil and earthworm gut microbiome and multifunctionality

Jin

Liu

Roux

et al. 2022

Soil Biology and Biochemistry

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Phosphorus addition regulates the responses of soil multifunctionality to nitrogen over-fertilization in a temperate grassland

Cited by 38 publications

References 55 publications

Inter-annual precipitation fluctuation shapes plant communities regardless of fertilization addition and mycorrhizal suppression in desert steppe

Inter-annual precipitation fluctuation shapes plant communities regardless of fertilization addition and mycorrhizal suppression in desert steppe

Plant Diversity and Fungal Richness Regulate the Changes in Soil Multifunctionality in a Semi-Arid Grassland

Biochar addition regulates soil and earthworm gut microbiome and multifunctionality

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