Responses of soil nitrogen and carbon mineralization rates to fertilization and crop rotation

Journal of Soils and Sediments, Год журнала: 2023, Номер 24(3), С. 1289 - 1301

Опубликована: Дек. 20, 2023

Язык: Английский

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Wooded biocorridors substantially improve soil properties in low-altitude rural benchlands

Heliyon, Год журнала: 2024, Номер 10(2), С. e24381 - e24381

Опубликована: Янв. 1, 2024

This study examines soil properties in 30- and 60-year-old agricultural biocorridors provides a comparative overview with neighbouring farmland. Both mixed undisturbed samples were collected from six farmland/biocorridor areas to assess wide spectrum of physical, hydrophysical, chemical biological properties. Biocorridor soils characterised by higher water retention capacities, porosity, aeration carbon stock, the latter increasing depth. On other hand, biocorridor bulk density under forest vegetation cover was lower, indicating progressive restoration. Slightly lower reactions disproved hypothesis that nutrient-rich would form substrates high base cation content, leading acidification. Biological activity, expressed through respiration coefficients, generally low due unfavourable physical conditions (clayey or silty-clay substrates), lowest levels biocorridors. Nevertheless, microbiota displayed more effective utilisation organic matter as nitrogen source, lighter-textured tending show after excluding influence land use. Our results confirm an important landscape component, contributing both stability local revitalisation environments further emphasising their potential climate-change mitigation tools role sinks.

Язык: Английский

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Topography Variations Alter the Nitrogen Utilization Strategies of Two Dominant Plant Species in an Alpine Steppe

Journal of soil science and plant nutrition, Год журнала: 2024, Номер unknown

Опубликована: Июнь 17, 2024

Язык: Английский

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Minor Effects of Canopy and Understory Nitrogen Addition on Soil Organic Carbon Turnover Time in Moso Bamboo Forests

Forests, Год журнала: 2024, Номер 15(7), С. 1144 - 1144

Опубликована: Июль 1, 2024

Increased atmospheric nitrogen (N) deposition has greatly influenced soil organic carbon (SOC) dynamics. Currently, the response of SOC to N is generally detected through understory addition, while canopy processes have been largely ignored. In present study, addition (CN) and (UN, 50 100 kg ha−1 year−1) were performed in a Moso bamboo forest compare whether CN UN consistent effects on turnover times (τsoil: defined as ratio stock heterotrophic respiration) with local NHx:NOy 2.08:1. The experimental results showed that after five years, content water without (CN0) was 82.9 g C kg−1, it 79.3, 70.7, 79.5 74.5 kg−1 for CN50, CN100, UN50 UN100, respectively, no significant difference found between UN. Five-year did not significantly change τsoil, which 34.5 ± 7.4 (mean standard error) CN0, 24.9 4.8, 22.4 4.9, 30.5 4.0 22.1 6.5 years respectively. Partial least squares structural equation modeling explained 93% variance enzyme activity most important positive factor controlling τsoil. These findings contradicted previous assumption may overestimate impacts SOC. Our mainly related high background study area, special type short duration experiment. Therefore, our had implications dynamics areas.

Язык: Английский

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Nitrogen input decreases microbial nitrogen use efficiency in surface soils of a temperate forest in northeast China

Geoderma, Год журнала: 2024, Номер 453, С. 117159 - 117159

Опубликована: Дек. 25, 2024

Язык: Английский

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