Temperature sensitivity of SOM decomposition is linked with a K‐selected microbial community

Li, Hui; Yang, Shan; Semënov, Mikhail; Yao, Fei; Ye, Ji; Bu, Rencang; Ma, Ruiao; Lin, Junjie; Kurganova, I. N.; Wang, Xugao; Deng, Ye; Кравченко, И. К.; Jiang, Yong; Kuzyakov, Yakov

doi:10.1111/gcb.15593

Cited by 240 publications

(122 citation statements)

References 114 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In contrast, a large amount of newly generated organic matter was buried in the deep soil environment of the 10 years forest due to the influence of anthropogenic activities and the input of organic fertilizers and crop straw (Kramer and Gleixner, 2008). Along with this perennial plant residue lingering on the soil surface, which may increase anaerobic microsites and affect soil moisture and temperature and thus the decomposition of plant residues (Ramírez et al, 2020a), making a higher proportion of lignin and aromatic compounds in the surface soil, when the SOC is more difficult to be decomposed (Li et al, 2021). As restoration time and soil depth increased, humification in the soil would decrease, carbon from plants will increase, and organic matter in the soil will be more difficult to decompose.…”

Section: Influence Of Recovery Period On Soc Stability Of Larch Plantationsmentioning

confidence: 99%

Effects of stand age and soil organic matter quality on soil bacterial and fungal community composition in Larix gmelinii plantations, Northeast China

Sun

et al. 2022

Preprint

View full text Add to dashboard Cite

It is of great interest to elucidate the biogeographic patterns of soil microorganisms and their driving forces, which is fundamental to predicting alterations in microbial-mediated functions arising from environment changes. Although the vertical movement of dissolved organic matter (DOM) drives the cycle of nutrients such as soil carbon but, in the restored ecosystem, the relationship between DOM and soil microbial nutrient utilization remains to be determined. Here, we investigated the changes of soil microbial community at 0-40 cm depth profile in three stages (10-, 30-, 50-years) of succession in Larix olgensis plantations and the fluorescence spectrum composition of DOM. With the increase of soil depth, the signal source of microorganisms increases. In a coniferous forest soil environment, the possible main source of DOM in deep soil is the production of microbial metabolism. Difficulty in the decomposition of organic matter determines the distribution and composition of microorganisms. Increasing forest age makes bacteria and fungi more specific and bacterial-fungal associations greater. Overall, our work contributes to the understanding of factors underlying microbial community distribution in plantation forests and the importance of DOM quality in building microbial communities.

show abstract

Section: Influence Of Recovery Period On Soc Stability Of Larch Plantationsmentioning

confidence: 99%

Effects of stand age and soil organic matter quality on soil bacterial and fungal community composition in Larix gmelinii plantations, Northeast China

Sun

et al. 2022

Preprint

View full text Add to dashboard Cite

show abstract

“…Although the r /K strategy theory is oversimplified, it provides researchers with a fundamental ecological perspective for understanding mechanisms of assembly of microbial communities in response to environmental change (de Vries & Shade, 2013; Li et al, 2021). The increases in the relative abundances of Proteobacteria and Bacteroidetes with grassland degradation indicate that the bacterial community adopted r -selection strategies.…”

Section: Taxa Strategies In Response To Grassland Degradationmentioning

confidence: 99%

“…Environmental selection was potentially weak due to the rather mild changes in resources in the course of grassland degradation over the relatively small spatial and temporal scales. Nevertheless, environmental factors can indirectly influence community response strategies in the form of community assembly (Fierer et al, 2007;Li et al, 2021). The balance between r -and K -strategies mediated by community members of different phyla facilitates adaptation to resource loss under grassland degradation (Figure 6) .…”

Section: Taxa Strategies In Response To Grassland Degradationmentioning

confidence: 99%

“…Distinct life strategies also help microbial communities to better respond to changes in environmental conditions (Ho et al, 2017;Vadstein et al, 2018;Li et al, 2021;. The balance between r -selection and K -selection strategies in a community determines the productivity levels of communities and the survival of individuals (Pianka, 1970;Reznick et al, 2002;Ye et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Selection of r-K strategies by soil bacterial communities in response to grassland degradation

Peng

Liu

et al. 2021

Preprint

View full text Add to dashboard Cite

Numerous studies have investigated bacterial community structure in grassland ecosystems and bacterial community responses to human management at various spatial and temporal scales; however, research on soil bacterial community assembly dynamics in the course of grassland degradation is limited. Here, the authors investigate the response and assembly processes of bacterial communities adopted in two grasslands with different degrees of degradation. Stochastic processes dominated bacterial community assembly processes in response to grassland degradation, with the bacterial diversity decreasing; however, functional gene diversity increased. Furthermore, different phyla exhibited distinct response strategies: Proteobacteria and Bacteroidetes, as r-strategists, exhibited positive responses, with increases in diversity, abundance, and niche width with an increase in grassland degradation, enhancing biodiversity and productivity; other phyla (mainly Acidobacteria) exhibited greater phylogenetic dispersion and functional redundancy, and less niche overlap, highlighting the role of K-strategy in improving community resource-use efficiency in response to resource loss in degraded grasslands. The transition from K- to r- strategy in bacterial communities following grassland degradation could help communities adapt to environmental disturbance in the form of nutrient loss. The results of the present study enhance our understanding of how nutrient loss in natural grassland ecosystems leads to shifts in bacterial community composition and assembly processes mediated by different response strategies of different phyla.

show abstract

“…But, due to higher labile SOC in the forest plantation which supported larger populations of soil microbes, Huang et al (2019) found that SOC mineralization was greater in the plantation forest than in the natural forest. The effects of soil properties on the Q 10 of SOC mineralization are also highly inconsistent (Wang et al 2019;Li et al 2021;Xu et al 2021). It was shown that the ratio of actinomycetes to bacteria (Liu et al 2017) and fungal phospholipid fatty acid (Qin et al 2019) were positively correlated with Q 10 , whereas the abundance of gram-negative bacteria decreased with the increasing Q 10 (Wang et al 2018).…”

Section: Introductionmentioning

confidence: 99%

Soil Organic Carbon Mineralization and its Temperature Sensitivity Along a Vegetation Restoration Gradient in Subtropical China

Fang

Sun

Huang

et al. 2021

Preprint

View full text Add to dashboard Cite

Background and aims Soil organic carbon (SOC) mineralization produces important CO2 flux from terrestrial ecosystems which can provide feedbacks to climates. Vegetation restoration can affect SOC mineralization and its temperature sensitivity (Q10), but how this effect is related to soil moisture remains uncertain. Methods We performed a laboratory incubation using soils of different vegetation restoration stages (i.e., degraded vegetation [DS], plantation [PS], and secondary natural forest [SFS]) maintained under different moisture and temperature conditions to explore the combined effects of vegetation restoration and soil moisture on SOC mineralization and Q10. Results We found that cumulative SOC mineralization in PS and SFS were about 11.7 times higher than that in the DS, associated with higher SOC content and microbial biomass. Increased soil moisture and temperature led to higher SOC mineralization in the SFS and PS. However, in the DS, soil moisture did not affect SOC mineralization, but temperature enhancement solely increased (158.7%) SOC mineralization at the 60%MWHC treatment. Furthermore, significant interactive effect of vegetation restoration and soil moisture on Q10 was detected. At the 60%MWHC treatment, Q10 declined with vegetation restoration age. Nevertheless, at the 30%MWHC treatment, Q10 was lower in the DS than that in the PS. Higher soil moisture did not affect Q10 in the PS and SFS, but enhanced Q10 in the DS. Conclusions Our results highlight that the responses of SOC mineralization and Q10 to vegetation restoration were highly dependent on soil moisture and substrate availability, and vegetation restoration reduced the influence of soil moisture on Q10.

show abstract

Temperature sensitivity of SOM decomposition is linked with a K‐selected microbial community

Cited by 240 publications

References 114 publications

Effects of stand age and soil organic matter quality on soil bacterial and fungal community composition in Larix gmelinii plantations, Northeast China

Effects of stand age and soil organic matter quality on soil bacterial and fungal community composition in Larix gmelinii plantations, Northeast China

Selection of r-K strategies by soil bacterial communities in response to grassland degradation

Soil Organic Carbon Mineralization and its Temperature Sensitivity Along a Vegetation Restoration Gradient in Subtropical China

Contact Info

Product

Resources

About