Impact of straw-biochar amendments on microbial activity and soil carbon dynamics in wheat-maize system

Soil and Tillage Research, Год журнала: 2024, Номер 244, С. 106284 - 106284

Опубликована: Авг. 28, 2024

Biochar is a promising carbon sequestration strategy, however, the mechanisms underlying regulation of microbial-derived (M-C) and plant-derived (P-C) in soil organic (SOC) formation stabilisation remain elusive, constraining accurate predictions pool. This study examined biotic abiotic factors that influence plant microbial biomarkers SOC accumulation. A 5-year field experiment was conducted temperate wheat-maize agroecosystem north-western China, with three treatments: (i) no straw incorporation (C), (ii) (S), (iii) + biochar (SB). The results showed M-C reached carrying capacity gradually, whereas P-C selectively continuously accumulated, displaying complementary S-curve pattern. Straw increased SOC, biomass (MBC), dissolved (DOC) contents, which stimulated richness enzyme activities, resulting 29.1 % 25.5 increase respectively. mineralisation (26.2 %) led to significantly lower content S compared SB practice. combined decreased DOC (18.5 comparison incorporation, suppressed particularly Actinobacteriota (12.3 β-N-acetyl-glucosaminidase (24.2 %). It resulted 10.9 14.3 fungal-to-bacterial necromass ratio (F/B), respectively, while decreasing by 9.6 over 5 years. Overall, effectively enhanced reduced mineralisation, suggesting its potential augment quantity stability pools mitigate global climate change.

Язык: Английский

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Wetland restoration after agricultural abandonment enhances soil organic carbon efficiently by stimulating plant- rather than microbial-derived carbon accumulation in Northeast China

CATENA, Год журнала: 2024, Номер 241, С. 108077 - 108077

Опубликована: Май 6, 2024

Язык: Английский

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No‐till reduced subsoil organic carbon due to decreased microbial necromass in micro‐aggregates

Land Degradation and Development, Год журнала: 2024, Номер 35(5), С. 1792 - 1803

Опубликована: Янв. 9, 2024

Abstract Microbial necromass is a crucial contributor to the formation of soil aggregates and serves as key source stable organic carbon (SOC). However, how tillage practices regulate microbial accumulation within aggregate fractions at different depths remains unclear. Thus, 20‐year field experiment was carried out identify (MC) distributed in its contribution SOC under no‐till (NT) plow (PT) rice‐wheat rotation system. The results showed that NT significantly increased bacterial fungal (C) concentrations both macro‐ micro‐aggregates (>0.25 <0.25 mm), enhanced MC compared with PT 0–5 cm topsoil depth. decreased concentration by 12.4% mainly attributed lower C 21.6% 27.6% 5–15 subsoil There no significant difference for mineralization per unit between PT, which can be equilibrium labile (e.g., dissolved C). Random forest partial least squares path model demonstrated total nitrogen, available NH 4 + , NO 3 − positively regulated β‐glucosidase activity, thus affected concentration. nitrogen activity micro‐aggregates, lowered Our findings highlights reduced due micro‐aggregates.

Язык: Английский

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Bacterial functions are main driving factors on paddy soil organic carbon in both surface soil and subsoil

Agriculture Ecosystems & Environment, Год журнала: 2024, Номер 373, С. 109123 - 109123

Опубликована: Июнь 17, 2024

Язык: Английский

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Fungal necromass contribution to carbon sequestration in global croplands: A meta-analysis of driving factors and conservation practices

The Science of The Total Environment, Год журнала: 2024, Номер 949, С. 174954 - 174954

Опубликована: Июль 26, 2024

Язык: Английский

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Patterns and determinants of plant- and microbial-derived carbon in desert riparian ecosystems: Implications for organic C accumulation

CATENA, Год журнала: 2025, Номер 250, С. 108789 - 108789

Опубликована: Фев. 7, 2025

Язык: Английский

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Effects of tillage practices on soil organic carbon, microbial community and necromass in a double rice cropping system

Applied Soil Ecology, Год журнала: 2023, Номер 194, С. 105190 - 105190

Опубликована: Ноя. 17, 2023

Язык: Английский

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Arbuscular mycorrhizal symbiosis enhances the accumulation of plant-derived carbon in soil organic carbon by regulating the biosynthesis of plant biopolymers and soil metabolism

Plant Physiology and Biochemistry, Год журнала: 2024, Номер 217, С. 109230 - 109230

Опубликована: Окт. 23, 2024

Язык: Английский

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Global synthesis on the responses of microbial- and plant-derived carbon to conservation tillage

Plant and Soil, Год журнала: 2025, Номер unknown

Опубликована: Фев. 19, 2025

Язык: Английский

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Potential and benefits of biochar production: crop straw management and carbon emission mitigation in Shaanxi Province, China

Environmental Science and Pollution Research, Год журнала: 2024, Номер unknown

Опубликована: Янв. 24, 2024

Язык: Английский

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