Long-term sheep grazing reduces fungal necromass carbon contribution to soil organic carbon in the desert steppe DOI Creative Commons
Tianqi Zhao,

Naijing Lu,

Jianying Guo

et al.

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

Published: Oct. 10, 2024

Grazing has been shown to impact the soil environment and microbial necromass carbon (MNC), which in turn regulates organic (SOC). However, sequestration potential of fungi bacteria under different stocking rates remains unclear, limiting our understanding grazing management. In 2004, we established experiments desert steppe northern China with four rates. Our findings indicate that MNC decreased moderate heavy grazing, while light did not significantly differ from no grazing. Notably, reduction fungal carbon, rather than bacterial was primarily responsible for contribution SOC. This difference is attributed varying effects sheep on community characteristics, including richness, diversity, composition. Thus, accurately predict dynamics grassland ecosystems, it essential consider ecological impacts communities may vary management practices.

Language: Английский

Conservation agriculture improves soil health and sustains crop yields after long-term warming DOI Creative Commons

Jialing Teng,

Ruixing Hou, Jennifer A. J. Dungait

et al.

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: Oct. 10, 2024

Climate warming threatens global food security by exacerbating pressures on degraded soils under intensive crop production. Conservation agriculture is promoted as a sustainable solution that improves soil health and sustains yields in changing climate, but these benefits may be affected long-term warming. Here, we investigate the effects of conservation compared to conventional 17 properties, microbial diversity yields, during eight-years' experimental An overall positive effect over time characterized linear increases organic carbon biomass carbon. Warming-triggered shifts fungal (saprogen richness) are directly linked 9.3% increase wheat eight years, only agriculture. Overall, results an average 21% supports similar levels production after Our work provides insights into potential for because improved resilience climate

Language: Английский

Citations

18
Increasing pesticide diversity impairs soil microbial functions DOI Creative Commons

Bang Ni,

Lu Xiao, Da Lin

et al.

Proceedings of the National Academy of Sciences, Journal Year: 2025, Volume and Issue: 122(2)

Published: Jan. 9, 2025

Pesticide application is essential for stabilizing agricultural production. However, the effects of increasing pesticide diversity on soil microbial functions remain unclear, particularly under varying nitrogen (N) fertilizer management practices. In this study, we investigated stochasticity microbes and multitrophic networks through amplicon sequencing, assessed community related to carbon (C), N, phosphorus (P), sulfur (S) cycling, characterized dominant bacterial life history strategies via metagenomics along a gradient two N addition levels. Our findings show that higher enriches abundance specialists opportunists capable degrading or resisting pesticides, reducing proportion generalists in absence addition. These shifts can complicate networks. Under increased diversity, selective pressure may drive bacteria streamline their average genome size conserve energy while enhancing C, P, S metabolic capacities, thus accelerating nutrient loss. comparison, was found reduce niche differentiation at mitigating impacts network complexity functional traits associated with ultimately alleviating results reveal contrasting different input scenarios emphasize strategic mitigate ecological use systems.

Language: Английский

Citations

3
Legume intercropping improves soil organic carbon stability in drylands: A 7-year experimental validation DOI
Wei Wang, Meng‐Ying Li, Yang Wang

et al.

Agriculture Ecosystems & Environment, Journal Year: 2025, Volume and Issue: 381, P. 109456 - 109456

Published: Jan. 2, 2025

Language: Английский

Citations

1
Challenges in alpine meadow recovery: The minor effect of grass restoration on microbial resource limitation DOI

R. Q. Li,

Qinghua Liu, Ruyi Luo

et al.

Journal of Environmental Management, Journal Year: 2025, Volume and Issue: 374, P. 124086 - 124086

Published: Jan. 9, 2025

Language: Английский

Citations

0
Soil Enzyme Activities and Microbial Carbon Pump Promote Carbon Storage by Influencing Bacterial Communities Under Nitrogen-Rich Conditions in Tea Plantation DOI Creative Commons

Qi Shu,

Shenghua Gao, Xinmiao Liu

et al.

Agriculture, Journal Year: 2025, Volume and Issue: 15(3), P. 238 - 238

Published: Jan. 22, 2025

Carbon–nitrogen (C-N) coupling is a fundamental concept in ecosystem ecology. Long-term excessive fertilization tea plantations has caused soil C-N imbalance, leading to ecological issues. Understanding under nitrogen loading essential for sustainable management, yet the mechanisms remain unclear. This study examined plantation soils five regimes: no fertilization, chemical fertilizer, + organic cake microbial and biochar. Fertilization mainly increased particulate carbon (POC) inorganic nitrogen, driven by changes bacterial community composition function. Mixed treatments enhanced association between communities properties, increasing complexity without altering overall trends. Fungal had minor influence on dynamics. Microbial necromass (MNC) pump (MCP) efficacy, representing long-term storage potential, showed minimal responses short-term fertilization. However, accumulation coefficient (NAC) was nitrogen-sensitive, indicating responses. PLS-PM analysis revealed consistent across treatments, where influenced through enzyme activity MCP, while directly affected storage. These findings provide insights precise management practices climate change.

Language: Английский

Citations

0
Microbial necromass carbon drives soil organic carbon accumulation during long‐term vegetation succession DOI Open Access

Ziwen Zhao,

Yanli Qin,

Yang Wu

et al.

Journal of Applied Ecology, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 18, 2025

Abstract Plant‐ and microbial‐derived carbon (C) are the two major sources of soil organic (SOC) pools that make important contributions to stable labile SOC. Although hypothesis an increase in SOC during natural vegetation restoration has been broadly verified, plant‐ C accumulation remain uncertain. In this study, we used biomarker approaches assess contribution allocation long‐term succession sequences. We found a unimodal distribution total lignin phenols along succession, with maximum occurring at 100 years (293 ± 22.7 mg kg −1 ). Vegetation significantly increased C, including microbial necromass (MNC) glomalin‐related proteins (GRSP). The MNC was high (26%–49%) whereas proportion plant‐derived GRSP consistently decreased. results indicated is determined by quality abundance plant litter input soil, closely associated metabolism mediated environmental factors. However, turnover pathway from persistent formation, as inferred nonlinear response coefficient, requires 90–100 achieve sequestration. Synthesis applications . Our findings further highlight critical role pump formation accumulation. argue prioritizing native pioneer species their mixed communities climax revegetation extensive fragile ecosystems contributes sustainable sequestration practices.

Language: Английский

Citations

0
The dynamics of bacterial communities during leaf decomposition of various species combinations in riparian forest buffers in China DOI
Zhangting Chen, Muhammad Arif

Forest Ecology and Management, Journal Year: 2025, Volume and Issue: 584, P. 122607 - 122607

Published: March 2, 2025

Language: Английский

Citations

0
Microbial strategies regulate organic carbon accumulation in saline paddy soils: A millennium chronosequence DOI
Dan Cao, Xiangxiang Wang,

Yi Miao

et al.

CATENA, Journal Year: 2025, Volume and Issue: 252, P. 108869 - 108869

Published: March 1, 2025

Citations

0
Ecosystem multifunctionality enhancement by short-term nitrogen addition in semi-arid saline–alkaline grassland of northern China DOI

Shuaikai Wu,

Yuan Su, Ge Wang

et al.

The Science of The Total Environment, Journal Year: 2025, Volume and Issue: 972, P. 179151 - 179151

Published: March 15, 2025

Language: Английский

Citations

0
Phosphate Fertilizer Effects on Microbial Resource Limitations in Wheat Cropland: Evidence from Ecoenzymatic Stoichiometry DOI Creative Commons
Yonggang Li,

Yanan Cheng,

Fei Wang

et al.

Agronomy, Journal Year: 2025, Volume and Issue: 15(3), P. 731 - 731

Published: March 18, 2025

The application of phosphate fertilizers significantly influences soil microbial communities and nutrient cycling. Soil enzymes, which are sensitive to levels, play a critical role in metabolism. However, the impact on limitations within metabolism agricultural soils remains poorly understood. In this study, samples were collected from depth 0–20 cm wheat crop subjected three-year field experiment with six different phosphorus (P) rates. β-glucosidase (BG) leucine aminopeptidase (LAP) activities highest under P3 (60 kg P2O5 ha−1) treatment over study period. responses N-acetyl-β-glucosaminidase (NAG) alkaline phosphatase (AKP) increasing P additions varied across years. EES C:N, C:P, vector length greater than 1. characteristics accounted for 70.71% variation enzyme stoichiometry. angle enzymes explained by 0.65 0.73, respectively. Among these factors, ROC exhibited largest direct total effect angle. These research findings offer valuable insights management fertilizers. Consequently, it is recommended enhance carbon levels alleviate improve utilization efficiency.

Language: Английский

Citations

0