Soil available nitrogen and phosphorus affected by functional bacterial community composition and diversity as ecological restoration progressed

Wang, Honglei; Bu, Lianyan; Song, Fangqin; Tian, Jing

doi:10.1002/ldr.3707

Cited by 20 publications

(8 citation statements)

References 86 publications

(161 reference statements)

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“…In addition, SOM is always associated with multiple soil nutrients like P and N, as well SM and pH in soils, were reported to correlate with the microbial community [55,56]. Thus, we deduced that SOM improved after NVR, and then regulated soil microbial diversity by three paths via the association of SOM and other soil properties (Figure 1c).…”

Section: Nvr Influenced the Microbial Community In Gullies By The Acc...mentioning

confidence: 81%

Microbial Community and Their Potential Functions after Natural Vegetation Restoration in Gullies of Farmland in Mollisols of Northeast China

Xiao

Zhang

Yan

et al. 2022

Land

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Although huge numbers of gullies have been widely formed and have severely decreased the quality of farmlands in mollisols, it is still unclear how the microbial community distributes after natural vegetation restoration (NVR), which highly relates to the ecological functions in the farmland. In this study, both the microbial community and their potential ecological functions after NVR were reviewed, together with the environmental factors relating to microbial evolution which were detected in two gullies of mollisols situated on farmland in Northeast China. The main results showed that NVR improved the microbial diversity and complexity of the co-occurrence network in gullies, and promoted bacterial community composition to be similar between the gully and deposition area. Moreover, the soil organic matter (SOM) regulated the microbial diversity by balancing soil available phosphorus (AP), soil moisture (SM), and pH, thus stimulating the key bacterial biomarkers of gullies (Rhizobiales, Microtrichales, TRA3-20) and regulating the bacterial composition, as well as indirectly enriching the function of bacteria to perform denitrification, C fixation, and phosphorus transport in gullies. In addition, abundant Dicotyledons in gullies mainly regulate the fungal community composition, and increased fungal richness in 0–20 cm soil depth, but decreased bacteria richness in 0–20 cm soil depth. Our findings revealed the repair mechanism of NVR on soil bacterial and fungal communities, especially on bacterial functionality, which should be given further attention in nutrient cycling across eroding mollisols in gullies.

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Section: Nvr Influenced the Microbial Community In Gullies By The Acc...mentioning

confidence: 81%

Microbial Community and Their Potential Functions after Natural Vegetation Restoration in Gullies of Farmland in Mollisols of Northeast China

Xiao

Zhang

Yan

et al. 2022

Land

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“…PCoA analysis suggested that the microbial communities of the 10 types of grassland were clustered into three groups, indicating that different grassland types had a greater impact on the composition of microbial communities compared to degradation and restoration. A recent study showed that grassland degradation or artificial restoration changed plant coverage and soil physical and chemical properties, thereby affecting the soil bacterial community structure ( Wang H. L. et al, 2021 ). After meadow degradation, the soil moisture content and the relative abundance of Proteobacteria were significantly decreased, and Proteobacteria grew better in swamp and meadow environments with high moisture contents ( Chen et al, 2019 ).…”

Section: Discussionmentioning

confidence: 99%

A functional metagenomics study of soil carbon and nitrogen degradation networks and limiting factors on the Tibetan plateau

et al. 2023

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IntroductionThe Three-River Source Nature Reserve is located in the core area of the Qinghai-Tibetan Plateau, with the alpine swamp, meadow and steppe as the main ecosystem types. However, the microbial communities in these alpine ecosystems, and their carbon and nitrogen degrading metabolic networks and limiting factors remain unclear.MethodsWe sequenced the diversity of bacteria and fungi in alpine swamps, meadows, steppes, and their degraded and artificially restored ecosystems and analyzed soil environmental conditions.ResultsThe results indicated that moisture content had a greater influence on soil microbial community structure compared to degradation and restoration. Proteobacteria dominated in high moisture alpine swamps and alpine meadows, while Actinobacteria dominated in low moisture alpine steppes and artificial grasslands. A metabolic network analysis of carbon and nitrogen degradation and transformation using metagenomic sequencing revealed that plateau microorganisms lacked comprehensive and efficient enzyme systems to degrade organic carbon, nitrogen, and other biological macromolecules, so that the short-term degradation of alpine vegetation had no effect on the basic composition of soil microbial community. Correlation analysis found that nitrogen fixation was strong in meadows with high moisture content, and their key nitrogen-fixing enzymes were significantly related to Sphingomonas. Denitrification metabolism was enhanced in water-deficient habitats, and the key enzyme, nitrous oxide reductase, was significantly related to Phycicoccus and accelerated the loss of nitrogen. Furthermore, Bacillus contained a large number of amylases (GH13 and GH15) and proteases (S8, S11, S26, and M24) which may promote the efficient degradation of organic carbon and nitrogen in artificially restored grasslands.DiscussionThis study illustrated the irrecoverability of meadow degradation and offered fundamental information for altering microbial communities to restore alpine ecosystems.

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“…One of the reasons might be that the dilution effect of soil C and N accumulation on soil P could cause or intensify the P limitation in the later stage of vegetation restoration ( Groenigen et al, 2006 ). Moreover, the distinct beta diversities of the apr- and phoD- harboring bacteria could cause a steady increase in soil available N and a general decrease in available P, which may further affect the plant nutrient limitation as ecosystem restoration proceeds ( Wang et al, 2020 ; Xu et al, 2020 ). In brief, our results suggest that the nitrogen limitation of plant and microbial communities was alleviated significantly and thereafter began to shift to P limitation at the later stages of vegetation restoration, supporting our first hypothesis, which is that plant and soil microbial metabolism are more likely limited by soil P in the late restoration stages.…”

Section: Discussionmentioning

confidence: 99%

Consistent Plant and Microbe Nutrient Limitation Patterns During Natural Vegetation Restoration

et al. 2022

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Vegetation restoration is assumed to enhance carbon (C) sequestration in terrestrial ecosystems, where plant producers and microbial decomposers play key roles in soil C cycling. However, it is not clear how the nutrient limitation patterns of plants and soil microbes might change during vegetation restoration. We investigated the nutrient limitations of the plant and microbial communities along a natural vegetation restoration chronosequence (1, 8, 16, 31, and 50 years) following farmland abandonment in Qinling Mountains, China, and assessed their relationships with soil factors. The result showed that following natural vegetation restoration, the nitrogen (N) limitation of plant and microbial communities was alleviated significantly, and thereafter, it began to shift to phosphorus (P) limitation at a later stage. Plants showed P limitation 50 years after restoration, while microbial P limitation appeared 31 years later. The changes in plant nutrient limitation were consistent with those in microbial nutrient limitation, but soil microbes were limited by P earlier than plants. Random forest model and partial least squares path modeling revealed that soil nutrient stoichiometry, especially soil C:N ratio, explained more variations in plant and microbial nutrient limitation. Our study demonstrates that the imbalanced soil C:N ratio may determine the soil microbial metabolic limitation and further mediate the variation in plant nutrient limitation during natural vegetation restoration, which provides important insights into the link between metabolic limitation for microbes and nutrient limitation for plants during vegetation restoration to improve our understanding of soil C turnover in temperate forest ecosystems.

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Soil available nitrogen and phosphorus affected by functional bacterial community composition and diversity as ecological restoration progressed

Cited by 20 publications

References 86 publications

Microbial Community and Their Potential Functions after Natural Vegetation Restoration in Gullies of Farmland in Mollisols of Northeast China

Microbial Community and Their Potential Functions after Natural Vegetation Restoration in Gullies of Farmland in Mollisols of Northeast China

A functional metagenomics study of soil carbon and nitrogen degradation networks and limiting factors on the Tibetan plateau

Consistent Plant and Microbe Nutrient Limitation Patterns During Natural Vegetation Restoration

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