Effects of the Co-Application of Glucose, Nitrogen, and Elevated Temperature on Buried Black Soil Carbon in a Cool Temperate Deciduous Broad-Leaved Forest DOI Open Access
Yasuo Iimura,

Daichi Tanaka

Forests, Journal Year: 2024, Volume and Issue: 15(6), P. 1057 - 1057

Published: June 19, 2024

Accurately predicting the feedback mechanisms between forest ecosystem carbon cycling and climate change is crucial for effective mitigation. Understanding soil organic (SOC) responses to combined impacts of plant biomass, litter, nitrogen deposition, especially regarding temperature sensitivity, essential but remains poorly understood. We conducted incubation experiments using buried black from a cool temperate deciduous broad-leaved in Japan, which has high C content highly stable molecular structure. The stepwise addition glucose increase 15 35 °C accelerated SOC mineralization by 74.0 mg kg−1 with positive priming effect (PE) during 49-day period, while simultaneous had no significant on this phenomenon, measured at 75.5 kg−1. Conversely, was significantly 10%, 241.0 261.3 kg−1, increase. Under impacts, Q10 value increased 1.6 2.0 compared that unmodified conditions, primarily due glucose. also found strong correlation activation energy (Ea) Q10. This result strongly supports quality–temperature (CQT) hypothesis. These results likely stem interactions quality availability, suggesting that, future, have effect, soils.

Language: Английский

Twenty Years of Progress, Challenges, and Opportunities in Measuring and Understanding Soil Respiration DOI Creative Commons
Ben Bond‐Lamberty, Ashley P. Ballantyne, E. Berryman

et al.

Journal of Geophysical Research Biogeosciences, Journal Year: 2024, Volume and Issue: 129(2)

Published: Feb. 1, 2024

Abstract Soil respiration (Rs), the soil‐to‐atmosphere flux of CO 2 , is a dominant but uncertain part carbon cycle, even after decades study. This review focuses on progress in understanding Rs from laboratory incubations to global estimates. We survey key developments situ ecosystem‐scale observations and manipulations, synthesize meta‐analyses estimates, discuss most compelling challenges opportunities for future. Increasingly sophisticated lab experiments have yielded insights into interaction among heterotrophic respiration, substrate supply, enzymatic kinetics, extended incubation‐based analyses across space time. Observational manipulative field‐based used improved measurement approaches deepen our integrated effects environmental change disturbance Rs. Freely‐available observational databases enabled studies probing magnitude of, constraints on, flux. Key field include expanding measurements, experiments, under‐represented communities ecosystems; reconciling independent estimates fluxes trends; testing leveraging power machine learning process‐based models, both independently conjunction with each other; continuing field's tradition using novel explore diverse mechanisms ecosystems.

Language: Английский

Citations

27
Changes in soil oxidase activity induced by microbial life history strategies mediate the soil heterotrophic respiration response to drought and nitrogen enrichment DOI Creative Commons

Weirong Zhuang,

Yong Li, Xiaoming Kang

et al.

Frontiers in Microbiology, Journal Year: 2024, Volume and Issue: 15

Published: March 15, 2024

Drought and nitrogen deposition are two major climate challenges, which can change the soil microbial community composition ecological strategy affect heterotrophic respiration (Rh). However, combined effects of composition, life strategies, extracellular enzymes on dynamics Rh under drought conditions remain unclear. Here, we experimented with an alpine swamp meadow to simulate (50% reduction in precipitation) multilevel addition determine interactive strategy, Rh. The results showed that significantly reduced seasonal mean by 40.07%, increased ratio 22.04%. altered composition. K- r-selected bacteria (B K:r ) fungi (F 20 91.43%, respectively. hydrolase activities but decreased oxidase activities. adding N had no significant effect B , F enzymes, or A structural equation model via explained 84% variation Oxidase . Our findings show primarily inhibiting activities, is induced bacterial shifts from r-strategy K-strategy. highlight indirect regulation carbon cycle through dynamic fungal history should be considered for a better understanding how terrestrial ecosystems respond future change.

Language: Английский

Citations

5
Acid rain reduced soil carbon emissions and increased the temperature sensitivity of soil respiration: A comprehensive meta-analysis DOI
Weichao Liu,

Jingbo Fang,

Yaoyue Liang

et al.

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 923, P. 171370 - 171370

Published: March 2, 2024

Language: Английский

Citations

4
Nitrogen Deposition Modulates Litter Decomposition and Enhances Water Retention in Subtropical Forests DOI Open Access

Jinmei Xing,

Chun Hu,

Chenggong Song

et al.

Forests, Journal Year: 2024, Volume and Issue: 15(3), P. 522 - 522

Published: March 12, 2024

Nitrogen (N) deposition influences litter decomposition and its water-holding capacity in forest ecosystems. Water conservation remains a priority, so understanding these interactions is vital for managing forests, especially the Yunnan Plateau region. This study aimed to investigate effects of simulated N on Evergreen broad-leaf Quercus aquifolioides central Plateau. Indoor flooding experiments were performed alongside varied nitrogen treatments. Litter rates under treatments evaluated using Olson model. In study, broad-leaved increased remaining mass by 4.75%–17.50% 2.09%–16.36% compared with control (20.97 ± 0.44% 42.43 0.47%), while forest, leaves twigs decreased 5.00% 0.70% LN treatment (35.47 0.39% 44.10 1.18%) MN HN 2.55%–8.13% 5.61%–11.28%, respectively. Effects changed from promoting inhibiting, as low sped up but higher levels inhibited it. Additionally, boosted litter, leaves. The both forests displayed notable ability absorb water. modulates water retention properties. Specifically, high increases inhibiting rate decomposition, which turn alters rate, lignin, cellulose rates. Efficient management studied leveraging can boost their potential, aiding atmospheric precipitation absorption surface runoff regulation.

Language: Английский

Citations

4
Mixed plantations promote carbon accumulation in plants and soil in arid and semi-arid regions: Evidence from the Loess Plateau of China DOI
Chen Gong,

Wanting Zhu,

Guobin Liu

et al.

Forest Ecology and Management, Journal Year: 2025, Volume and Issue: 586, P. 122717 - 122717

Published: April 21, 2025

Language: Английский

Citations

0
Consequences of nitrogen deposition and soil acidification in European forest ecosystems and mitigation approaches DOI Creative Commons
Baoguo Du, Ralf Kiese, Klaus Butterbach‐Bahl

et al.

Forest Ecology and Management, Journal Year: 2025, Volume and Issue: 580, P. 122523 - 122523

Published: Jan. 29, 2025

Language: Английский

Citations

0
Nitrogen deposition suppresses soil respiration by reducing global belowground activity DOI
Wenya Xiao, Chen Chen, Han Y. H. Chen

et al.

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 921, P. 171246 - 171246

Published: Feb. 23, 2024

Language: Английский

Citations

3
Changing soil available substrate primarily caused by fertilization management contributed more to soil respiration temperature sensitivity than microbial community thermal adaptation DOI
Zhibin Guo, Changan Liu,

Keke Hua

et al.

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 912, P. 169059 - 169059

Published: Dec. 6, 2023

Language: Английский

Citations

4
Precipitation differentially regulates above- and belowground productivity in response to nitrogen enrichment in an alpine meadow DOI
Jinlong Peng, Ruiyang Zhang, Fangfang Ma

et al.

Agricultural and Forest Meteorology, Journal Year: 2024, Volume and Issue: 358, P. 110257 - 110257

Published: Oct. 10, 2024

Language: Английский

Citations

1
The Responses of N2O, CO2 Emissions, and Bacterial Communities to Nitrogen Addition in Saline–Alkaline Wetlands of Northeast China DOI Creative Commons
Huihui Su, Hong Liang, Feng Li

et al.

Atmosphere, Journal Year: 2023, Volume and Issue: 14(11), P. 1675 - 1675

Published: Nov. 13, 2023

The Zhalong Wetland is impacted by elevated atmospheric nitrogen (N) deposition and N inputs from agricultural fertilization, which in turn affect greenhouse gas (GHG) emissions. It unclear how addition affects nitrous oxide (N2O) carbon dioxide (CO2) emissions this wetland. Therefore, we conducted a short-term experiment, collecting soil samples three representative points with different water levels, five levels (N0 = 0 mg kg−1, N10 10 N30 30 N50 50 N100 100 kg−1) were used to simulate input. Overall, N2O significantly increased addition. Differently, had significant suppressive effect on CO2 high-flooded soils, whereas the highest regarded under treatment middle-flooded dry soils. Through Pearson’s correlation analysis, found positive between ammonium (NH4+), emission was positively correlated pH total organic (TOC). Meanwhile, bacterial community of analyzed via high-throughput sequencing. results revealed that not affecting structure, while different. Among them, relative abundance dominant genera Trichoderma Pseudomonas enhanced after Furthermore, communities be pH, TOC, NH4+, nitrate contents, affected

Language: Английский

Citations

2