Land use and mineral type jointly control stability of newly formed mineral-associated organic matter

Research Square (Research Square), Год журнала: 2025, Номер unknown

Опубликована: Март 31, 2025

Formation of mineral-associated organic matter (MAOM) is a key process in the global carbon cycle, stabilising C (OC) soils. The relative importance mineral composition and land use as potential controls MAOM stability at regional scales underlying microbial processes are still unresolved. Here, we assessed formed on goethite (iron oxide) illite (phyllosilicate clay) exposed for five years topsoils 68 forest grassland sites across Germany. We incubated newly MAOM, determined its extractability, analysed functioning associated communities. Decomposition was always significantly lower than illite, highlighting that higher OC accumulation not exclusively due to larger sorption capacity. Instead, reduced extractability phosphorus-acquiring enzyme activities indicated stronger substrate limitation growth illite. Across two minerals, decomposition consistently forests grasslands, relating greater nutrient constraints different community forests. Overall, type explained almost similar proportions variance decomposition. pronounced effect underlines responsiveness environmental change.

Язык: Английский

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Global Patterns of Leaf Litter C:N:P Stoichiometry Under Current and Future Climate Scenarios

Global Biogeochemical Cycles, Год журнала: 2025, Номер 39(5)

Опубликована: Май 1, 2025

Abstract Plant litter carbon (C), nitrogen (N), and phosphorus (P) stoichiometry can indicate ecosystem nutrient use efficiency limitation. Yet, a comprehensive quantification of plant C:N:P ratios at the global scale remains elusive, limiting our understanding how their variation responds to future climate change. We constructed database comprising 11,807 records leaf ratios, quantifying patterns under current (2041–2100) scenarios using random forest method. found that mean C:N, C:P N:P were 46.5, 669.4 16, respectively, while they dependent on mycorrhizal association, taxonomic division, and/or functional type. Leaf C:N showed opposite latitudinal patterns, being larger in high low latitude regions, ratio remained relatively stable regions but increased significantly toward poles. Our simulations further revealed increasing warming decreased terrestrial plants, despite fact variations largely These findings clearly benefit us understand role regulating cycling C nutrients, responding development with

Язык: Английский

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Integrating soil biofilms: A holistic approach to understanding their role in soil health

Applied Soil Ecology, Год журнала: 2025, Номер 212, С. 106213 - 106213

Опубликована: Май 23, 2025

Язык: Английский

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Land use and mineral type determine stability of newly formed mineral-associated organic matter

Communications Earth & Environment, Год журнала: 2025, Номер 6(1)

Опубликована: Май 27, 2025

Язык: Английский

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