Plant and microbial pathways driving plant diversity effects on soil carbon accumulation in subtropical forest

Jia, Yufu; Zhai, Guoqing; Zhu, Shanshan; Liu, Xiaojuan; Schmid, Bernhard; Wang, Zhiheng; Ma, Keping; Feng, Xiaojuan

doi:10.1016/j.soilbio.2021.108375

Cited by 56 publications

(22 citation statements)

References 77 publications

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“…Plant species diversity may impact multiple biotic and abiotic variables (Chen et al, 2019, 2020; Furey George & Tilman, 2021; Liu et al, 2021; Tedersoo et al, 2016). As aforementioned, higher PSD usually enhances SOC and TN (Jia et al, 2021; Liu et al, 2021). Besides, higher PSD may improve soil texture and pore structure (Chen et al, 2022), and increase microbial abundance and activity (Chen et al, 2019).…”

Section: Introductionmentioning

confidence: 92%

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Plant species diversity enhances soil gross nitrogen transformations in a subtropical forest, southwest China

Zhu

Gao

et al. 2023

Journal of Applied Ecology

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1. Plant species diversity (PSD) regulates ecosystem structure and functions, and is a key issue we need to consider when design vegetation restoration projects.Increasing PSD has been shown to promote or decrease soil nitrogen (N) availability, but the underlying mechanisms have not been well explored.2. Here, 45 plots with the Shannon-Weiner indices ranging from 0.15 to 3.57 were selected in a subtropical forest to explore the effect of PSD on soil N transformations.3. Higher PSD significantly enhanced the rates of gross N mineralization, gross nitrification, microbial N immobilization, net N mineralization, net nitrification and the contents of soil total N and inorganic N. Structural equation modelling showed that PSD indirectly impacted gross N transformations via its roles in regulating soil organic matter, mineral and microbial traits. Higher PSD stimulated gross N mineralization and nitrification mainly via its positive effects on microbial biomass content and gene abundances of chiA, archaeal or bacterial amoA, while increased microbial N immobilization mainly due to its stimulation of soil organic matter.4. Synthesis and applications. Our findings highlight the crucial role of PSD in stimulating soil N availability and provide a mechanistic understanding which can be integrated into Earth system models to better predict soil N availability and C sequestration in response to PSD.

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Section: Introductionmentioning

confidence: 92%

“…Plant species diversity may impact multiple biotic and abiotic variables (Chen et al, 2019(Chen et al, , 2020Furey George & Tilman, 2021;Liu et al, 2021;Tedersoo et al, 2016). As aforementioned, higher PSD usually enhances SOC and TN (Jia et al, 2021;Liu et al, 2021).…”

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confidence: 98%

Plant species diversity enhances soil gross nitrogen transformations in a subtropical forest, southwest China

Zhu

Gao

et al. 2023

Journal of Applied Ecology

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“…There are numerous links between plant and soil microbial diversity, and plant species and microbial diversity both play important roles in maintaining ecosystem stability and health ( Zak et al, 2003 ; Gabriele et al, 2017 ; Rawat et al, 2020 ). Numerous scholars have conducted systematic studies on the response of diversity to environmental changes and investigated the feedback mechanisms of plant species and microbial diversity ( Bouasria et al, 2012 ; Oliveira et al, 2012 ; Jia et al, 2021 ; Li et al, 2021a ). Currently, it is extremely difficult to replace new populations of M .…”

Section: Introductionmentioning

confidence: 99%

Effects of Temperature and Nitrogen Application on Carbon and Nitrogen Accumulation and Bacterial Community Composition in Apple Rhizosphere Soil

Zhang

Phillip

et al. 2022

Front. Plant Sci.

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Malus sieversii grows on the slopes of the Tianshan Mountains in Xinjiang where the difference in daily temperature is significant. In recent years, the rhizosphere soil health of Malus sieversii has been severely impacted by anthropogenic disturbance and pathogenic infestation. The soil nutrient content and soil microorganism diversity are the main components of soil health. Low temperature has negative effects on soil bacterial community structure by inhibiting the accumulation of carbon and nitrogen. However, the effects of temperature and nitrogen application on soil carbon and nitrogen accumulation and the bacterial community composition in the rhizosphere soil of Malus sieversii are unclear. We set two temperature levels, i.e., low temperature (L) and room temperature (R), combined with no nitrogen (N0) and nitrogen application (N1) to explore the response of plant carbon and nitrogen uptake, rhizosphere soil carbon and nitrogen accumulation and bacterial community composition to temperature and nitrogen fertilization. At the same temperature level, plant 13C abundance (P-Atom13C), plant 15N absolute abundance (P-Con15N), soil 15N abundance (S-Atom15N) and soil urease, protease and glutaminase activities were significantly higher under nitrogen application compared with the no-nitrogen application treatment. The bacterial community diversity and richness indices of the apple rhizosphere soil in the N1 treatment were higher than those in the N0 treatment. The relative abundances of Actinobacteria, Rhodopseudomonas, and Bradyrhizobium were higher in the LN1 treatment than in the LN0 treatment. Redundancy analysis (RDA) showed that plant 13C absolute abundance (P-Con13C) and plant 15N absolute abundance (P-Con15N) were the main factors affecting the soil bacterial community composition. In summary, Nitrogen application can alleviate the effects of low temperature stress on the soil bacterial community and is of benefit for the uptakes of carbon and nitrogen in Malus sieversii plants.

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“…This result has two explanations. First, compared with CK and SA, higher plant richness in the SG mode increased plant productivity through niche complementary effects, and consequently, improved plant C inputs into the soil and enhanced SOC accumulation ( Chen S. et al, 2018 ; Chen X. et al, 2019 ; Li et al, 2019 ; Jia et al, 2021 ). Second, SG enhanced soil N and P content more effectively, which played an important role in SOC accumulation by affecting primary productivity and SOC decomposition ( Averill and Waring, 2018 ; Chen et al, 2018a , b Chen S. et al, 2018 ; Wang et al, 2020 ; Ding et al, 2021 ).…”

Section: Discussionmentioning

confidence: 99%

Linking between soil properties, bacterial communities, enzyme activities, and soil organic carbon mineralization under ecological restoration in an alpine degraded grassland

et al. 2023

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Soil organic carbon (SOC) mineralization is affected by ecological restoration and plays an important role in the soil C cycle. However, the mechanism of ecological restoration on SOC mineralization remains unclear. Here, we collected soils from the degraded grassland that have undergone 14 years of ecological restoration by planting shrubs with Salix cupularis alone (SA) and, planting shrubs with Salix cupularis plus planting mixed grasses (SG), with the extremely degraded grassland underwent natural restoration as control (CK). We aimed to investigate the effect of ecological restoration on SOC mineralization at different soil depths, and to address the relative importance of biotic and abiotic drivers of SOC mineralization. Our results documented the statistically significant impacts of restoration mode and its interaction with soil depth on SOC mineralization. Compared with CK, the SA and SG increased the cumulative SOC mineralization but decreased C mineralization efficiency at the 0–20 and 20–40 cm soil depths. Random Forest analyses showed that soil depth, microbial biomass C (MBC), hot-water extractable organic C (HWEOC), and bacterial community composition were important indicators that predicted SOC mineralization. Structural equal modeling indicated that MBC, SOC, and C-cycling enzymes had positive effects on SOC mineralization. Bacterial community composition regulated SOC mineralization via controlling microbial biomass production and C-cycling enzyme activities. Overall, our study provides insights into soil biotic and abiotic factors in association with SOC mineralization, and contributes to understanding the effect and mechanism of ecological restoration on SOC mineralization in a degraded grassland in an alpine region.

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Plant and microbial pathways driving plant diversity effects on soil carbon accumulation in subtropical forest

Cited by 56 publications

References 77 publications

Plant species diversity enhances soil gross nitrogen transformations in a subtropical forest, southwest China

Plant species diversity enhances soil gross nitrogen transformations in a subtropical forest, southwest China

Effects of Temperature and Nitrogen Application on Carbon and Nitrogen Accumulation and Bacterial Community Composition in Apple Rhizosphere Soil

Linking between soil properties, bacterial communities, enzyme activities, and soil organic carbon mineralization under ecological restoration in an alpine degraded grassland

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