Reduced Precipitation Frequency Decreases the Stability of the Soil Organic Carbon Pool by Altering Microbial Communities in Degraded Grasslands DOI Creative Commons
Junda Chen, Yifan Gao, Yuan Zeng

et al.

Agronomy, Journal Year: 2025, Volume and Issue: 15(4), P. 977 - 977

Published: April 17, 2025

Decreasing precipitation frequency (DPF) has the potential to alter soil microbial community structure, enzyme activity, and stoichiometry of biomass in grassland ecosystems. Grasslands have undergone degradation, often driven by anthropogenic activities such as overgrazing, which further intensifies their sensitivity environmental changes altered precipitation. Changes communities can turn impact organic carbon pool (SOCP) its stability, particularly degraded grasslands shaped agricultural practices. Here, we evaluated how DPF affects different types pools, biomass, activity exoenzymes related nutrient acquisition three steppe representing a degradation gradient (from light moderate severe degradation). We also developed systematic model linking stoichiometry, SOCP stability. Our results showed that significantly reduced total (STCP), SOCP, dissolved (DOCP) all grasslands, while it increased DOCP/SOCP ratio with indicating lower stability SOCP. Decreased but had opposite effect on degradation. Additionally, promoting effects fungi/bacteria β-1,4-xylosidase diminished increasing The ratio, carbon/nitrogen were identified main predictors for In lightly moderately decreased water content (SWC) moisture variation induced promoted decreasing ratio. under highlights challenges posed climate change regarding sequestration these fragile stress importance targeted management agriculture livestock management, could be achieved altering For example, fertilization increases availability, enhances growth, shifts C/N/P ratios, allocation over respiration thus enhancing retention.

Language: Английский

The accumulation of soil microbial necromass and the changes in the depth-driven mechanisms along the altitude gradient DOI

Tengyue Du,

Kyung-Hee Han,

Ermao Ding

et al.

Applied Soil Ecology, Journal Year: 2025, Volume and Issue: 207, P. 105951 - 105951

Published: Feb. 10, 2025

Language: Английский

Citations

0
Complementary effects of encroachment and grazing intensity for soil quality in a mountain grassland DOI

Evan Alexander Marks,

Jomar M. Barbosa, Jorge Mataix‐Solera

et al.

Agriculture Ecosystems & Environment, Journal Year: 2025, Volume and Issue: 388, P. 109652 - 109652

Published: March 30, 2025

Language: Английский

Citations

0
Responses of aggregate-associated carbon and their fractions to different positions in a karst valley of Southwest China DOI
Lei Ma, Manyi Li, Cheng Li

et al.

Environmental Monitoring and Assessment, Journal Year: 2025, Volume and Issue: 197(5)

Published: April 9, 2025

Language: Английский

Citations

0
Arbuscular mycorrhizal fungi hyphal density rather than diversity stimulates microbial necromass accumulation after long-term Robinia pseudoacacia plantations DOI
Chunhui Liu, Baorong Wang, Jiaqi Liu

et al.

Soil Biology and Biochemistry, Journal Year: 2025, Volume and Issue: unknown, P. 109817 - 109817

Published: April 1, 2025

Language: Английский

Citations

0
Reduced Precipitation Frequency Decreases the Stability of the Soil Organic Carbon Pool by Altering Microbial Communities in Degraded Grasslands DOI Creative Commons
Junda Chen, Yifan Gao, Yuan Zeng

et al.

Agronomy, Journal Year: 2025, Volume and Issue: 15(4), P. 977 - 977

Published: April 17, 2025

Decreasing precipitation frequency (DPF) has the potential to alter soil microbial community structure, enzyme activity, and stoichiometry of biomass in grassland ecosystems. Grasslands have undergone degradation, often driven by anthropogenic activities such as overgrazing, which further intensifies their sensitivity environmental changes altered precipitation. Changes communities can turn impact organic carbon pool (SOCP) its stability, particularly degraded grasslands shaped agricultural practices. Here, we evaluated how DPF affects different types pools, biomass, activity exoenzymes related nutrient acquisition three steppe representing a degradation gradient (from light moderate severe degradation). We also developed systematic model linking stoichiometry, SOCP stability. Our results showed that significantly reduced total (STCP), SOCP, dissolved (DOCP) all grasslands, while it increased DOCP/SOCP ratio with indicating lower stability SOCP. Decreased but had opposite effect on degradation. Additionally, promoting effects fungi/bacteria β-1,4-xylosidase diminished increasing The ratio, carbon/nitrogen were identified main predictors for In lightly moderately decreased water content (SWC) moisture variation induced promoted decreasing ratio. under highlights challenges posed climate change regarding sequestration these fragile stress importance targeted management agriculture livestock management, could be achieved altering For example, fertilization increases availability, enhances growth, shifts C/N/P ratios, allocation over respiration thus enhancing retention.

Language: Английский

Citations

0