Soil organic matter formation, persistence, and functioning: A synthesis of current understanding to inform its conservation and regeneration

Advances in agronomy, Journal Year: 2022, Volume and Issue: unknown, P. 1 - 66

Published: Jan. 1, 2022

Language: Английский

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Soil carbon sequestration by root exudates

Trends in Plant Science, Journal Year: 2022, Volume and Issue: 27(8), P. 749 - 757

Published: May 20, 2022

Language: Английский

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Plant phosphorus-acquisition and -use strategies affect soil carbon cycling

Trends in Ecology & Evolution, Journal Year: 2021, Volume and Issue: 36(10), P. 899 - 906

Published: July 7, 2021

Language: Английский

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Advancing the mechanistic understanding of the priming effect on soil organic matter mineralisation

Functional Ecology, Journal Year: 2022, Volume and Issue: 36(6), P. 1355 - 1377

Published: March 9, 2022

Abstract The priming effect (PE) is a key mechanism contributing to the carbon balance of soil ecosystem. Almost 100 years research since its discovery in 1926 have led rich body scientific publications identify drivers and mechanisms involved. A few review articles summarised acquired knowledge; last major one was published 2010. Since then, knowledge on microbial communities involved PE + C sequestration has been considerably renewed. This article reviews current state what extent new insights may improve our ability understand predict evolution stocks. We propose framework unify different concepts terms that emerged from international community this topic, report recent discoveries needs. Seventy per cent studies were 10 years, illustrating renewed interest for PE, probably linked increased concern about importance climate change food security issues. Among all proposed along with explain some are named differently but actually refer same object. overall introduces ‘artificial’ complexity mechanistic understanding we common, shared terminology. Despite remaining gaps, consistent progress achieved decipher abiotic underlying together role enzymes identity actors However, including into models SOM dynamics remains challenging as long not fully understood. In meantime, empirical alternatives available reproduce observations accurately when calibration robust. Based knowledge, scenarios depicting impact ecosystem services under conditions. Read free Plain Language Summary Journal blog.

Language: Английский

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Stabilisation of soil organic matter: interactions between clay and microbes

Biogeochemistry, Journal Year: 2022, Volume and Issue: 160(2), P. 145 - 158

Published: July 25, 2022

Abstract Soil organic matter (SOM) plays a central role in the global carbon balance and mitigating climate change. It will therefore be important to understand mechanisms of SOM decomposition stabilisation. stabilisation is controlled by biotic factors, such as efficiency which microbes use produce compounds varying chemistry, but also abiotic adsorption plant- microbially-derived onto soil minerals. Indeed, physicochemical minerals, forming mineral associated (MAOM), one significant processes for We integrate existing frameworks illustrate how microbial control over interacts with In our new integrated framework, we emphasise interplay between substrate characteristics abundance active clay surfaces on recycling. postulate that recycling substrates decline increased surfaces, shape these relationships depend affinity each adsorb, thereby affecting remains stabilised into MAOM. Our framework provides avenues novel research ideas incorporate interactions biogeochemical models. Graphical abstract

Language: Английский

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Belowground processes and sustainability in agroecosystems with intercropping

Plant and Soil, Journal Year: 2022, Volume and Issue: 476(1-2), P. 263 - 288

Published: May 28, 2022

Language: Английский

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Plant litter strengthens positive biodiversity–ecosystem functioning relationships over time

Trends in Ecology & Evolution, Journal Year: 2023, Volume and Issue: 38(5), P. 473 - 484

Published: Jan. 2, 2023

Language: Английский

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Root Exudates Mediate the Processes of Soil Organic Carbon Input and Efflux

Plants, Journal Year: 2023, Volume and Issue: 12(3), P. 630 - 630

Published: Jan. 31, 2023

Root exudates, as an important form of material input from plants to the soil, regulate carbon and efflux plant rhizosphere soil play role in maintaining nutrient balance whole ecosystem. exudates are notoriously difficult collect due their underlying characteristics (e.g., low concentration fast turnover rate) associated methodological challenges accurately measuring root native soils. As a result, up until now, it has been quantify organic most studies. In recent years, contribution ecological effects have paid more attention. However, mechanism mediated by rarely analyzed comprehensively. this review, main processes influencing factors demonstrated. Soil minerals microbes key roles processes. The allocation is influenced relationship between functional traits. Compared with quantity response exudate quality environmental changes affects function more. future, different availability will be quantified, which helpful understand sequestration.

Language: Английский

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Nitrogen availability mediates soil carbon cycling response to climate warming: A meta‐analysis

Global Change Biology, Journal Year: 2023, Volume and Issue: 29(9), P. 2608 - 2626

Published: Feb. 6, 2023

Abstract Global climate warming may induce a positive feedback through increasing soil carbon (C) release to the atmosphere. Although can affect both C input and output from soil, direct convincing evidence illustrating that induces net change in is still lacking. We synthesized results field experiments at 165 sites across globe found had no significant effect on stock. On average, significantly increased root biomass respiration, but effects respiration strongly depended nitrogen (N) availability. Under high N availability (soil C:N ratio < 15), biomass, promoted coupling between sizes of relative limitation > enhanced biomass. However, enhancement did not corresponding accumulation possibly because microbial CO 2 offset input. Also, reactive alleviated warming‐induced loss elevated atmospheric or precipitation increase/reduction not. Together, our findings indicate (i.e., ratio) critically mediates dynamics, suggesting its incorporation into C‐climate models improve prediction cycling under future global scenarios.

Language: Английский

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The Deep Soil Organic Carbon Response to Global Change

Annual Review of Ecology Evolution and Systematics, Journal Year: 2023, Volume and Issue: 54(1), P. 375 - 401

Published: Aug. 22, 2023

Over 70% of soil organic carbon (SOC) is stored at a depth greater than 20 cm belowground. A portion this deep SOC actively cycles on annual to decadal timescales and sensitive global change. However, responses change likely differ from surface because biotic controls cycling become weaker as mineral predominate with depth. Here, we synthesize the current information drivers warming, shifting precipitation, elevated CO 2 , land use cover Most can only be hypothesized few studies measure soils, even fewer experiments manipulate soils. We call scientists incorporate soils into their manipulations, measurements, models so that response accounted for in projections nature-based climate solutions terrestrial feedbacks

Language: Английский

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