Tree species diversity increases soil microbial carbon use efficiency in a subtropical forest

Global Change Biology, Journal Year: 2023, Volume and Issue: 29(24), P. 7131 - 7144

Published: Oct. 19, 2023

Plant communities strongly influence soil microbial and, in turn, carbon (C) cycling. Microbial use efficiency (CUE) is an important parameter for predicting C accumulation, yet how plant and community traits CUE remains poorly understood. Here, we determined influenced by traits, studying a natural gradient of species diversity subtropical forest. Our results showed that increased with increasing tree diversity, suggesting correlation between storage. The specific properties explained the greatest variation were associated (biomass, enzyme activities ratio oligotrophic to copiotrophic taxa); there weaker correlations plant-input properties, chemistry organic quality its mineral protection. Overall, high was correlated diversity: higher substrate availability (simple SOM chemical structures weak associations) growth rates despite dominance strategists. point mechanism which may increase forest sink affecting community.

Language: Английский

---

Mineral-mediated stability of organic carbon in soil and relevant interaction mechanisms

Eco-Environment & Health, Journal Year: 2024, Volume and Issue: 3(1), P. 59 - 76

Published: Jan. 3, 2024

Soil, the largest terrestrial carbon reservoir, is central to climate change and relevant feedback environmental health. Minerals are essential components that contribute over 60% of soil storage. However, how interactions between minerals organic shape transformation stability remains poorly understood. Herein, we critically review primary mechanisms, including sorption, redox reaction, co-precipitation, dissolution, polymerization, catalytic reaction. These interactions, highly complex with combination multiple processes, greatly affect through following processes: (1) formation or deconstruction mineral-organic association; (2) oxidative minerals; (3) polymerization (4) varying association according mineral transformation. Several pieces evidence related turnover during interaction in real eco-environment then demonstrated. We also highlight current research gaps outline priorities, which may map future directions for a deeper mechanisms-based understanding storage capacity considering its minerals.

Language: Английский

---

“Reactive Mineral Sink” drives soil organic matter dynamics and stabilization

npj Materials Sustainability, Journal Year: 2023, Volume and Issue: 1(1)

Published: Nov. 27, 2023

Abstract Reactive primary and secondary minerals play a critical role in the transformation stabilization of organic matter (OM) soil, aspect that has been largely overlooked existing literature. In this regard, we propose new model known as “reactive mineral sink” (RMS) to illustrate three mechanisms through which these drive bioprocessing, transformation, transport OM soil. Firstly, from biological perspective, reactive influence enzymatic microbial processing binding proteins or influencing structure communities. Secondly, chemical standpoint, have capacity adsorb and/or coprecipitate with it, leading more diverse distribution This distribution, turn, triggers catalysis redox reactions. Thirdly, on physical level, substantial impact soil architecture, aggregate dynamics, porosity development, hydrological processes. These changes then affect transport, reprocessing OM. The RMS provides conceptual framework underscores fundamental driving dynamics carbon (C) sequestration natural Furthermore, it promotes restoration biogeochemical processes ecological resilience. We advocate for implementation strategies based enhance C soils purposes rejuvenating health mitigating CO 2 emission.

Language: Английский

---

DOM Associates with Greenhouse Gas Emissions in Chinese Rivers under Diverse Land Uses

Environmental Science & Technology, Journal Year: 2023, Volume and Issue: 57(40), P. 15004 - 15013

Published: Oct. 2, 2023

Growing evidence indicates that rivers are hotspots of greenhouse gas (GHG) emissions and play multiple roles in the global carbon budget. However, terrestrial from land use river GHG remain largely unknown. We studied microbial composition, dissolved organic matter (DOM) properties, emission responses to different landcovers (n = 100). The bacterial community was mainly constrained by land-use intensity, whereas fungal controlled DOM chemical composition (e.g., with high photoreactivity). Anthropogenic stressors gross regional domestic product, total population) were main factors affecting chromophoric (CDOM). biodegradability exhibited a positive correlation CDOM contributed activity for transformation. Variations CO2 CH4 governed biodegradation or photomineralization derived autotrophic indirectly affected via changes properties water chemistry. Because offset some climatic benefits (or ocean) sinks, intensified urban inevitably alters cycling microclimate.

Language: Английский

---

Acidification of European croplands by nitrogen fertilization: Consequences for carbonate losses, and soil health

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 924, P. 171631 - 171631

Published: March 11, 2024

Soil acidification is an ongoing problem in intensively cultivated croplands due to inefficient nitrogen (N) fertilization. We collected high-resolution data comprising 19,969 topsoil (0–20 cm) samples from the Land Use and Coverage Area frame Survey (LUCAS) of European commission 2009 calculate impact N fertilization on buffering substances such as carbonates base cations. have only considered impacts mineral fertilizers total added N, a use efficiency 60 %. Nitrogen adds annually 6.1 × 107 kmol H+ croplands, leading annual loss 109 kg CaCO3. Assuming similar during last 50 years, were completely removed 3.4 106 ha croplands. In carbonate-free soils, 2.1 basic cations will lead strong at least 2.6 million within next years. Inorganic carbon cation losses rapid scale tremendously drop nutrient status production potential liming ameliorate acidity increases pH temporarily with additional financial environmental costs. Only direct soil carbonate stocks compensation carbonates-related CO2 correspond about 1.5 % proposed budget for 2023. Thus, controlling decreasing crucial avoid degradation agricultural which can be done by adopting best management practices increasing efficiency. Regular screening or monitoring contents, especially where are critical levels urgently necessary.

Language: Английский

---

Spatial gradients and molecular transformations of DOM, DON and DOS in human-impacted estuarine sediments

Environment International, Journal Year: 2024, Volume and Issue: 185, P. 108518 - 108518

Published: Feb. 23, 2024

Dissolved organic matter (DOM) constitutes the most active fraction in global carbon pools, with estuarine sediments serving as significant repositories, where DOM is susceptible to dynamic transformations. Anthropogenic nitrogen (N) and sulfur (S) inputs further complicate by creating N-bearing (DON) S-bearing (DOS). This study delves into spatial gradients transformation mechanisms of DOM, DON, DOS Pearl River Estuary (PRE) sediments, China, using combined techniques UV-visible spectroscopy, Excitation-emission matrix (EEM) fluorescence Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS), microbial high-throughput sequencing. Results uncovered a distinct gradient concentration, aromaticity (SUV

Language: Английский

---

The impact of geochemical and life-cycle variables on carbon dioxide removal by enhanced rock weathering: Development and application of the Stella ERW model

Applied Geochemistry, Journal Year: 2024, Volume and Issue: 167, P. 106002 - 106002

Published: April 6, 2024

Language: Английский

---

Effects of fertilizer application on the bacterial community and weathering characteristics of typical purple parent rocks

Frontiers in Microbiology, Journal Year: 2025, Volume and Issue: 15

Published: Jan. 7, 2025

Rock weathering is a fundamental process that shapes Earth's topography, soil formation, and other surface processes. However, the mechanisms underlying influence of fertilizer application on remain poorly understood, especially with respect to bacterial intervention. In this study, purple parent rocks from Shaximiao Group (J2s) Penglaizhen (J3p) were selected investigate effects community characteristics these rock by leaching experiment. The results revealed that: application, when at high levels, greatly altered abundance, diversity composition in weathered products. Through redundancy analysis, decrease pH increases available nutrients (AN AP) resulting identified as key factors driving changes Moreover, promotes physical chemical some extent. This true for J2s. Structural equation model indicated affects through multiple pathways affecting properties (pH, C:N AP), specific genera (IMCC26256, Ramlibacter, Nitrosospira), Our study links products after which plays role controlling predicting dynamic space time. It helpful further understand law human activities

Language: Английский

---

Movable-type printing method to fabricate ternary FeCoNi alloys confined in porous carbon towards oxygen electrocatalysts for rechargeable Zn-air batteries

Nanoscale, Journal Year: 2024, Volume and Issue: 16(6), P. 3166 - 3172

Published: Jan. 1, 2024

Transition metal-based carbon catalysts are a promising class of electrocatalysts to enhance the efficiency energy conversion and storage devices. However, it remains challenging task develop multi-metal alloy catalysts. Herein, ternary FeCoNi nanoparticles (NPs) confined in nitrogen-doped (NC) were fabricated via facile movable-type printing method, where range transition metals NC was prepared using same technique except for adjustment metal precursors. Due unique electronic structure significant active sites medium-entropy alloy, FeCoNi-NC demonstrated highly efficient bifunctional electrocatalytic activities oxygen reduction (E1/2 = 0.838 V) evolution (Eoverpotential 330 mV, 10 mA cm-2) reactions, which comparable those Pt/C RuO2. Moreover, FeCoNi-NC-based liquid rechargeable ZABs displayed substantial power density 231.2 mW cm-2, homemade flexible also exhibited outstanding activity cycling durability. Thus, this method is suitable constructing variety multi-metal-based air batteries.

Language: Английский

---

Lithological Controls on Soil Aggregates and Minerals Regulate Microbial Carbon Use Efficiency and Necromass Stability

Environmental Science & Technology, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 14, 2024

Microbial carbon (C) use efficiency (CUE) drives soil C formation, while physical-chemical protection stabilizes subsequent microbial necromass, both shaped by aggregates and minerals. Soils inherit many properties from the parent material, yet influence of lithology associated geochemistry on CUE necromass stabilization remains unknow. Here, we quantified in well-aggregated bulk soils crushed aggregates, as well mineral-associated organic matter fraction, originating carbonate-containing (karst) carbonate-free (clastic rock, nonkarst) materials along a broad climatic gradient. We found that aggregate crushing significantly increased karst nonkarst soils. Additionally, compared to soils, calcium-rich macroaggregate stability decreased ratio oligotrophic copiotrophic taxa, leading reduction CUE. Moreover, was negatively with iron (hydr)oxides attributed greater abundance higher pH. Despite negative effects aggregation minerals CUE, particularly these concurrently showed through organo-mineral associations Consequently, (i) bedrock mediates stability; (ii) balancing minerals' dual roles diminishing enhancing is vital for optimizing preservation.

Language: Английский

---