Effects of fire on the soil microbial metabolic quotient: A global meta-analysis

Liu, Weichao; Zhang, Zhenjiao; Li, Jiaxin; Wen, Yang; Liu, Fuhe; Zhang, Wei; Liu, Hanyu; Ren, Chao; Han, Xinhui

doi:10.1016/j.catena.2023.106957

Cited by 11 publications

(6 citation statements)

References 43 publications

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“…Soil pH also alters the NAC by modifying microbial activities. The microbial metabolic quotient is remarkably decreased with lower pH in terrestrial ecosystems (Liu et al., 2023; Xu et al., 2017). Soil microbes with low pH generally exhibit relatively high carbon acquisition capacities, CUE and exudation of extracellular enzymes (Li et al., 2021).…”

Section: Discussionmentioning

confidence: 99%

Microbial traits dictate soil necromass accumulation coefficient: A global synthesis

Han,

Yao,

Wang

et al. 2023

Global Ecol Biogeogr

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AimThe accumulation of microbial necromass carbon has gained increasing attention due to its slow decomposition. However, it remains unclear what induces the accumulation of microbial necromass carbon via reiterated community turnover on large spatial scales. This study explores the characteristics of soil necromass carbon accumulation in terrestrial ecosystems.LocationGlobal.Time PeriodContemporary (1999–2022).Major Taxa StudiedSoil microorganisms.MethodsA dataset was compiled using 993 observations from 82 peer‐reviewed papers on the effects of coefficients of microbial necromass accumulation (hereafter NAC) in equilibrium. Linear mixed‐effect models and structural equation models were used to ascertain the controlling factors of the NAC.ResultsThe average NAC was higher in croplands (28.2) and forests (26.8) than in grasslands (21.1). Edaphic factors seemingly affected the NAC, which was lower in soils with high pH and clay content on a global scale. Biotic factors, particularly those related to living microorganism abundance and microbial biomass nitrogen content, were the pivotal drivers of NAC and accounted for approximately 43.6% of its geographic variability. More organic carbon was likely to be preserved in soil with a higher NAC, regardless of ecosystem type.ConclusionsNovel findings regarding the overriding controls for the living microorganism abundance and microbial biomass nitrogen that drive the NAC highlight an urgent need for viable strategies to manipulate microbial attributes for enhancing carbon sequestration.

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Section: Discussionmentioning

confidence: 99%

Microbial traits dictate soil necromass accumulation coefficient: A global synthesis

Han,

Yao,

Wang

et al. 2023

Global Ecol Biogeogr

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“…As wildfires tend these days to be more severe, the authors claim that post-fire management is necessary to speed up rates of recovery and so favour biogeochemical dynamics. Similarly, Liu et al (2023), based on an analysis of 371 works studying the impact of fire on microbial properties, conclude that the effects are highly variable depending on the location and soil type, but given that the majority constitute short-term studies, what may occur in the long term is largely unknown. These authors report that their review of the literature suggests that SOM is not affected in the long term, although the biological properties may be impacted.…”

Section: Internal Soil Variablesmentioning

confidence: 99%

How Long Is Long? A Bibliographic Review of What Is Meant by the Long-Term Effects of Fire on Soil Properties

Garcia-Braga,

Peñalver-Alcalá,

Farguell

et al. 2024

Span. J. Soil Sci.

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Wildfires pose one of the greatest threats to the world’s forests soils. After exposure to fire, forests lose many of their ecological functions; moreover, the repercussions can extend well beyond the forest itself, as the erosive processes attributable to the combustion of vegetation and the soil’s lack of protection against rainfall are likely to impact any areas of a catchment, contaminating reservoirs, estuaries and aquifers. A forest fire is not solely, therefore, an environmental issue, but also a social and economic problem. The recovery of a forest is heavily dependent on just how the soil has been affected and how rapidly the latter can be restored. Fire intensity is critical in understanding the temporal evolution of the forest, while its location—a clear determinant of its climate and the ecosystem it occupies—can undermine the functionality of the forest system and is critical in determining the duration of the effects of the fire episode. This paper undertakes a review of the literature with the aim of understanding what might be understood when studies speak of the long-term effects of fire on the soil and when a soil might be considered to have recovered from these effects. What is evident is that many variables have a role to play and that not all soil properties recover at the same rate; indeed, some may never be restored to pre-fire levels.

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“…The impact of fire on soil microorganisms has two main aspects: first, the high temperature generated by wildfires directly kills soil microorganisms and, second, wildfires change their environment, indirectly affecting their growth and abundance [6,7]. Fire intensity, soil moisture content, soil pH, and available nutrients can all affect the composition and quantity of soil microorganisms [48]. High intensity fire can kill microorganisms by rupturing cell membranes, denaturing proteins and destroying The impact of fire on soil microorganisms has two main aspects: first, the high temperature generated by wildfires directly kills soil microorganisms and, second, wildfires change their environment, indirectly affecting their growth and abundance [6,7].…”

Section: State Of the Artmentioning

confidence: 99%

“…High intensity fire can kill microorganisms by rupturing cell membranes, denaturing proteins and destroying The impact of fire on soil microorganisms has two main aspects: first, the high temperature generated by wildfires directly kills soil microorganisms and, second, wildfires change their environment, indirectly affecting their growth and abundance [6,7]. Fire intensity, soil moisture content, soil pH, and available nutrients can all affect the composition and quantity of soil microorganisms [48]. High intensity fire can kill microorganisms by rupturing cell membranes, denaturing proteins and destroying nucleic acids [49].…”

Section: State Of the Artmentioning

confidence: 99%

Current Status of Research on Wildland Fire Impacts on Soil Environment and Soil Organisms and Hotspots Visualization Analysis

Cheng,

Wu,

Wei

et al. 2024

Fire

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Ecosystems are frequently disturbed by fires that have an important impact on the soil environment and the composition of soil organisms. In order to provide a baseline for the current research and identify trends on the effects of wildland fire on soil environment and biological changes, the available literature was identified from the Web of Science database, covering the period from 1998/1998/1999 (the year of the earliest publication in this field) to 2023. A bibliometric analysis was performed and the data were visually displayed for the number of publications, countries, authors, research institutions, and keywords representing research hotspots. Specifically, the effects of wildland fire on the soil environment, on soil microorganisms and on soil fauna were analyzed. The results show that the annual number of publications describing effects of wildland fire on the soil environment and on soil microorganisms are increasing over time, while those describing effects on soil fauna are fewer and their number remains constant. The largest number of papers originate from the United States, with the United States Department of Agriculture as the research institution with the largest output. The three authors with the largest number of publications are Stefan H. Doerr, Manuel Esteban Lucas-Borja and Jan Jacob Keizer. The research hotspots, as identified by keywords, are highly concentrated on wildfire, fire, organic matter, and biodiversity, amongst others. This study comprehensively analyzes the current situation of the research on the effects of wildland fire on changes in the soil environment and organisms, and provides reference for relevant scientific researchers in this trend and future research hotspots.

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Effects of fire on the soil microbial metabolic quotient: A global meta-analysis

Cited by 11 publications

References 43 publications

Microbial traits dictate soil necromass accumulation coefficient: A global synthesis

Microbial traits dictate soil necromass accumulation coefficient: A global synthesis

How Long Is Long? A Bibliographic Review of What Is Meant by the Long-Term Effects of Fire on Soil Properties

Current Status of Research on Wildland Fire Impacts on Soil Environment and Soil Organisms and Hotspots Visualization Analysis

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