Dynamics and fractions of soil organic carbon in response to 35 years of afforestation in subtropical China

Plant and Soil, Год журнала: 2024, Номер 500(1-2), С. 481 - 494

Опубликована: Фев. 14, 2024

Язык: Английский

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How does exotic Spartina alterniflora affect the contribution of iron-bound organic carbon to soil organic carbon in salt marshes?

The Science of The Total Environment, Год журнала: 2024, Номер 926, С. 171605 - 171605

Опубликована: Март 8, 2024

Язык: Английский

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Soil conditioners promote the formation of Fe-bound organic carbon and its stability

Journal of Environmental Management, Год журнала: 2023, Номер 349, С. 119480 - 119480

Опубликована: Окт. 31, 2023

Язык: Английский

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Contrasting stocks and origins of particulate and mineral-associated soil organic carbon in a mangrove-salt marsh ecotone

Geoderma, Год журнала: 2024, Номер 446, С. 116904 - 116904

Опубликована: Май 7, 2024

The global warming-driven poleward expansion of mangrove habitats (e.g., Avicennia germinans and Rhizophora mangle) into temperate salt marshes Spartina alterniflora Juncus roemerianus) has been shown to alter coastal soil organic carbon (SOC) storage. However, the taxa-specific consequences this vegetation shift on origin size SOC sub-fractions (particulate OC (POC); mineral-associated (MAOC); reactive iron-associated (FeR-MAOC)) remain largely unexplored. In study, we used a particle size-based fractionation method compare quantity δ13C composition bulk each in cores collected from Apalachicola Bay barrier islands Florida, USA, highest latitude where monospecific communities all four aforementioned plants co-occur. Depth-dependent variation clearly showed replacement S. by mangroves, as well reciprocal substitutions J. roemerianus, probably driven changes wetland elevation. Higher burial rates suggested that soils were principally developed deposition. contrast, comparatively lower but higher stocks marsh illustrated subsurface input roots. POC was primarily derived contemporary plant detritus; its concentration (58.8 ± 9.0 % SOC) relative mangroves (38.4 6.0 SOC). MAOC content did not vary across (53.5 10.9 SOC), originated microbially-transformed pre-existing plants. FeR-MAOC essentially absent R. mangle (2.9 3.6 while representing minor fraction three other (7.8 7.0 more like present-day surface plants, highlighting situ formation their active oxidizing rhizospheres.

Язык: Английский

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Annual measurements of net ecosystem CO2 exchange at an alpine wetland on the eastern Qinghai-Tibetan Plateau: overlooked carbon sink potential

Journal of Soils and Sediments, Год журнала: 2025, Номер unknown

Опубликована: Янв. 21, 2025

Язык: Английский

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Overview of the Mineralosphere and research progress on its environmental effects

Science China Earth Sciences, Год журнала: 2025, Номер unknown

Опубликована: Март 19, 2025

Язык: Английский

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Plant and microbial-mediated soil organic carbon accumulation and stabilization in an estuary salt marsh wetland: Implications for blue carbon formation

Applied Soil Ecology, Год журнала: 2025, Номер 209, С. 106058 - 106058

Опубликована: Март 26, 2025

Язык: Английский

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The importance of moisture in regulating soil organic carbon content based on a comparison of “enzymic latch” and “iron gate” in Zoige Plateau peatland

CATENA, Год журнала: 2023, Номер 225, С. 107019 - 107019

Опубликована: Фев. 20, 2023

Язык: Английский

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Ecosystem-specific patterns and drivers of global reactive iron mineral-associated organic carbon

Biogeosciences, Год журнала: 2023, Номер 20(23), С. 4761 - 4774

Опубликована: Дек. 1, 2023

Abstract. Reactive iron (Fe) oxides are vital for long-term soil or sediment organic carbon (SOC) storage. However, the patterns and drivers of Fe-associated (Fe-OC) over global geographic scales under various ecosystem types remain controversial. Here, we provided a systematic assessment distribution determinants Fe-OC content its contribution to SOC (fFe-OC) by assembling dataset comprising 862 observations from 325 sites in distinct ecosystems. We found that across ecosystems ranged 0 83.3 g kg−1 (fFe-OC % 82.4 %), reflecting high variability pool. contents varied with type being greater wetlands molar ratio / dithionite-extractable Fe (Fed) compared marine terrestrial Furthermore, fFe-OC was significantly lower than other due rich (OC). In contrast climate variables pH, random forest modeling multivariate analysis showed : Fed were predominant predictors ecosystems, whereas primary driver Based on upper estimates storage types, further estimated 83.84 ± 3.8, 172.45 8.74, 24.48 0.87 Pg preserved association wetland, terrestrial, respectively. Taken together, our findings highlighted importance reactive preservation, their controlling factors specific.

Язык: Английский

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Organic carbon sequestration by Fe oxides in aggregates in a Pinus massoniana conifer-broadleaf mixed forest

Soil and Tillage Research, Год журнала: 2024, Номер 240, С. 106105 - 106105

Опубликована: Апрель 3, 2024

Язык: Английский

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