Ecological Indicators, Год журнала: 2025, Номер 171, С. 113201 - 113201
Опубликована: Фев. 1, 2025
Язык: Английский
Agriculture Ecosystems & Environment, Год журнала: 2023, Номер 354, С. 108543 - 108543
Опубликована: Май 5, 2023
Язык: Английский
Процитировано
63
Global Change Biology, Год журнала: 2023, Номер 29(22), С. 6188 - 6200
Опубликована: Сен. 21, 2023
Abstract Plant‐ and microbially derived carbon (C) are the two major sources of soil organic matter (SOM), their ratio impacts SOM composition, accumulation, stability, turnover. The contributions key factors defining plant microbial C in along profile not well known. By leveraging nuclear magnetic resonance spectroscopy biomarker analysis, we analyzed three types using regional‐scale sampling combined these results with a meta‐analysis. Topsoil (0–40 cm) was rich carbohydrates lignin (38%–50%), whereas subsoil (40–100 contained more proteins lipids (26%–60%). proportion increases, while decreases content. decrease rate to plant‐derived (C M:P ) content 23%–30% faster topsoil than regional study had high potential stabilize through intensive transformations necromass formation. Plant input mean annual temperature were main topsoil, fungi‐to‐bacteria clay influencing . Combining meta‐analysis, highlighted contribution litter up 1‐m depth elucidated regulating long‐term preservation.
Язык: Английский
Процитировано
62
Annual Review of Ecology Evolution and Systematics, Год журнала: 2023, Номер 54(1), С. 375 - 401
Опубликована: Авг. 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
Язык: Английский
Процитировано
59
Global Change Biology, Год журнала: 2024, Номер 30(1)
Опубликована: Янв. 1, 2024
Soils store large quantities of carbon in the subsoil (below 0.2 m depth) that is generally old and believed to be stabilized over centuries millennia, which suggests sequestration (CS) can used as a strategy for climate change mitigation. In this article, we review main biophysical processes contribute storage mathematical models represent these processes. Our guiding objective whether process understanding soil movement vertical profile help us assess persistence at timescales relevant Bioturbation, liquid phase transport, belowground inputs, mineral association, microbial activity are contributing formation profiles, represented using diffusion-advection-reaction paradigm. Based on simulation examples measurements from radiocarbon profiles across biomes, found advective diffusive transport may only play secondary role profiles. The difference between root inputs decomposition seems primary determining shape with depth. Using transit time new show small travel through horizons longer than 50 years, implying activities promote CS must take into consideration very long term.
Язык: Английский
Процитировано
26
Ecological Indicators, Год журнала: 2024, Номер 160, С. 111796 - 111796
Опубликована: Фев. 29, 2024
As soil fungi are major players in the carbon accumulation process, two main fungal degraders topsoil, Ascomycetes and Basidiomycetes, were investigated as indicators of land use effectiveness increasing function. The study focused on organic content increase a 20-year short rotation forest cycle with broadleaf woody plantations compared to nearby arable cropping system. Total fungi, Ascomycota Basidiomycota, quantified terms DNA copy number, specific probes using SYBR® Green I dye QuantStudio™ 3D digital PCR system (dPCR). Previously, next generation sequencing analysis general primer confirmed that Basidiomycota most represented phyla community composition significantly differed between treatments. A range key enzyme activities for C-cycle also assessed. (TOC), microbial biomass term dsDNA increased soil. TOC wood species, Salix Robina gave greatest (+30 20 % respectively), followed by Populus (+12), highly correlated showing same trend. three four times (average 3144 n copies µl−1 DNA) (1419 µl−1); almost absent (av. 94n µl−1) five six 490 µl−1). ascomycetes strongly TOC, whereas basidiomycetes did not. These findings showed represent largest portion agricultural soils even after 20-years they can be taken processes. Therefore, this suggests joining quantity topsoil Ascomycota:Basidiomycota ratio seems good option when setting regional strategies improving C accrual farmland short-term afforestation.
Язык: Английский
Процитировано
22
Nature Food, Год журнала: 2025, Номер unknown
Опубликована: Янв. 3, 2025
Язык: Английский
Процитировано
4
Geoderma, Год журнала: 2023, Номер 435, С. 116496 - 116496
Опубликована: Май 12, 2023
Increased plant carbon (C) input into the soils after cropland abandonment results in not only C accumulation, but also higher microbial activities and consequently faster organic matter decomposition. We investigated link between soil accumulation properties a chronosequence (0–65 years) of post-agricultural self-restoration Luvisols - dominating type worldwide. Microbial biomass (MBC) enzyme increased top (0–20 cm) during 37-year period self-restoration. Accumulation was than at earlier stages (0–22 because fast growth induced by labile litter components. The response activity more sensitive to land use changes compared that C. Activities enzymes responsible for cycle nitrogen (N) phosphorus (P) cycles least up 37 years abandonment, indicating adaptations high with wide C/N C/P ratios. Similarly, β-xylosidase solely which reached similar secondary forest 65 years, due recalcitrant age. demand caused bacterial portion community (based on PLFA composition), turn, resulted lower ratio. Enzyme stoichiometry revealed microorganisms were limited N topsoil years. Overall, quantity quality inputs, changed restoration, regulated production, offering profound comprehension ecosystem succession.
Язык: Английский
Процитировано
40
Agriculture Ecosystems & Environment, Год журнала: 2023, Номер 349, С. 108444 - 108444
Опубликована: Март 7, 2023
Язык: Английский
Процитировано
33
Nature Geoscience, Год журнала: 2023, Номер 16(10), С. 909 - 914
Опубликована: Окт. 1, 2023
Язык: Английский
Процитировано
33
Scientific Reports, Год журнала: 2023, Номер 13(1)
Опубликована: Янв. 20, 2023
This study aims to investigate soil organic carbon (SOC) and total nitrogen (TN) contents stocks, CO2 emissions selected properties in croplands, grazing lands, exclosures forest lands of semi-arid Ethiopia. Sampling was done at 0-30, 30-60 60-90 cm depths concentration stocks SOC, TN were determined using standard routine laboratory procedures. There variations distribution SOC stock over 90 depth across land use types locations, decreasing from topsoils subsoil, with average values ranging 48.68 Mg C ha-1 4.80 N Hugumburda cropland 303.53 24.99 Desa'a respectively. Forest sequestered significant higher stock, depth, compared other types. In Hugumburda, the conversion resulted a loss 9.04 2.05 ha-1, respectively, an increase emission 33.16 7.52 yr-1, The establishment 10 years (Geregera) 6 (Haikihelet) on degraded increased by 13% 37%
Язык: Английский
Процитировано
24