Soil Biology and Biochemistry, Journal Year: 2024, Volume and Issue: 196, P. 109512 - 109512
Published: July 3, 2024
Language: Английский
Global Change Biology, Journal Year: 2024, Volume and Issue: 30(5)
Published: May 1, 2024
The soil microbial carbon pump (MCP) is increasingly acknowledged as being directly linked to organic (SOC) accumulation and stability. Given the close coupling of (C) nitrogen (N) cycles constraints imposed by their stoichiometry on growth, N addition might affect growth strategies with potential consequences for necromass formation However, this topic remains largely unexplored. Based two multi-level fertilizer experiments over 10 years in soils contrasting fertility located North (Cambisol, carbon-poor) Southwest (Luvisol, carbon-rich), we hypothesized that different resource demands microorganism elicit a trade-off (Y-strategy) resource-acquisition (A-strategy) response addition, consequently We combined measurements metrics (MCP efficacy) stability (chemical composition mineral associated carbon) changes life history (assessed via metagenomes enzymatic activity analyses). contribution SOC decreased Cambisol, but increased Luvisol. Soil displayed distinct responses after amendment: shift toward A-strategy (Cambisol) or Y-strategy (Luvisol). These divergent are owing stoichiometric imbalance between availability C N, which presented very patterns soils. partial correlation analysis further confirmed high aggravated demand, shifting community strategy reduced Cambisol. In contrast, had positive direct effect MCP efficacy Luvisol, greatly enhanced Such findings provide mechanistic insights into regulation efficacy, how mediated site-specific trade-offs strategies, contribute improving our comprehension sequestration optimization agricultural management.
Language: Английский
Citations
19
The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 899, P. 165665 - 165665
Published: July 19, 2023
Language: Английский
Citations
26
Soil Ecology Letters, Journal Year: 2024, Volume and Issue: 6(4)
Published: March 23, 2024
Language: Английский
Citations
9
Journal of Environmental Management, Journal Year: 2023, Volume and Issue: 344, P. 118536 - 118536
Published: June 29, 2023
Language: Английский
Citations
22
Soil and Tillage Research, Journal Year: 2023, Volume and Issue: 234, P. 105858 - 105858
Published: Aug. 27, 2023
Language: Английский
Citations
22
Current Research in Environmental Sustainability, Journal Year: 2023, Volume and Issue: 5, P. 100214 - 100214
Published: Jan. 1, 2023
Soil organic carbon (SOC), mineralization and microbial community structures were investigated at different depths of farmland soils 4 years after a single biochar amendment. Biochar increased SOC 0-20cm (10.7%) 20-40cm (24.9%). Mineralization decreased with depth further 12.3% (0-20cm), 8.5% (20-40cm) 30.5% (40-60cm) Subsoils selected for oligotrophs (e.g., Chloroflexi, Acidobacteria) associated lower rates limited copiotrophs Proteobacteria, Ascomycota) which exhibit higher respiration rates. enhanced in topsoil restricted all depths. This demonstrates how increases stability by changing
Language: Английский
Citations
16
Forest Ecosystems, Journal Year: 2023, Volume and Issue: 10, P. 100092 - 100092
Published: Jan. 1, 2023
The loss of soil organic carbon (SOC) following conversion natural forests to managed plantations has been widely reported. However, how different SOC fractions and microbial necromass C (MNC) respond forest management practices remains unclear. We sampled 0–10 cm mineral from three one protected in Guangxi, Southern China, explore affect through changing mineral-associated (MAOC) particulate (POC), as well fungal bacterial C. Compared with the forest, POC abandoned, mixed Eucalyptus significantly decreased, but MAOC showed no significant change, indicating that was mainly decreased under management. Forest also reduced root biomass, extractable C, MNC, total biomass (measured by phospholipid fatty acid), increased fungi-to-bacteria ratio (F:B) peroxidase activity. Moreover, positively correlated negatively F:B These results suggested input properties together regulated dynamics during Overall, this study indicates intervention decreases reducing suggests protection can help sequester more ecosystems.
Language: Английский
Citations
15
Global Change Biology, Journal Year: 2023, Volume and Issue: 29(24), P. 7159 - 7172
Published: Oct. 13, 2023
The frequency and intensity of droughts worldwide are challenging the conservation soil organic carbon (SOC) pool. Microbial necromass is a key component SOC, but how it responds to drought at specific depths remains largely unknown. Here, we conducted 3-year field experiment in forest plantation investigate impacts intensities under three treatments (ambient control [CK], moderate [30% throughfall removal], intensive [50% removal]) on microbial pools (i.e., bacterial carbon, fungal total carbon). We showed that effects depended groups, depth, intensity. While increased (+9.1% ± 3.3%) (+13.5% 4.9%) topsoil layer (0-15 cm), reduced (-31.6% 3.7%) (-43.6% 4.0%) subsoil (15-30 cm). In contrast, both significantly BNC subsoil. Our results suggested were more pronounced than those topsoil. This study highlights complex responses events depending community structure, depth with global implications when forecasting cycling climate change.
Language: Английский
Citations
14
Plant and Soil, Journal Year: 2023, Volume and Issue: 494(1-2), P. 301 - 319
Published: Oct. 18, 2023
Language: Английский
Citations
14
Applied Soil Ecology, Journal Year: 2024, Volume and Issue: 196, P. 105320 - 105320
Published: Feb. 8, 2024
Language: Английский
Citations
5