Nitrogen-induced acidification increases soil organic carbon accrual by promoting particulate organic carbon and microbial necromass under long-term experiment in the paddy soils of East China DOI
Zhaoming Chen, Qiang Wang,

Jinchuan Ma

et al.

Research Square (Research Square), Journal Year: 2025, Volume and Issue: unknown

Published: March 27, 2025

Abstract Background and aims Nitrogen (N) addition can substantially affect soil carbon cycling in agroecosystems. Microbial necromass (MNC) is widely recognized as a key contributor to organic C (SOC) fractions. However, the mechanisms underlying responses of MNC SOC fractions N fertilization paddy soils remain unclear. Methods A field experiment with four rates, namely, 0, 300, 450, 600 kg ha–1 yr–1 was conducted determine effects on fractions, microbial (MNC), enzyme activity, biomass rice–wheat rotation. Results increased POC concentrations by 2.88–8.41% 14.6–41.2%, respectively, but did not MAOC. The ratio MAOC reduced addition, indicating that decreased stability. concentration 7.32–22.5% its contribution 4.14–13.7%. activity β-1,4-N-acetyl-glucosaminidase decreased, while activities leucine amino peptidase acid phosphatase were under P addition. Structural equation modeling random forest revealed N-induced decrease pH promoted accrual increasing root biomass, consequently improving POC. Conclusions likely more vulnerable than acidification primary driver for promoting soils.

Language: Английский

Co-incorporating green manure and crop straw increases crop productivity and improves soil quality with low greenhouse-gas emissions in a crop rotation DOI Creative Commons
Na Zhao,

Xiquan Wang,

Jun Ma

et al.

The Crop Journal, Journal Year: 2024, Volume and Issue: 12(4), P. 1233 - 1241

Published: July 31, 2024

In a nine-year field experiment in wheat–maize–sunflower cropping system Hetao Irrigation Area, Inner Mongolia, China, organic amendments applied as straw, manure, green and the combination of manure straw increased wheat maize yield, soil aggregate stability, microbial activity comparison with chemical fertilizer, without changing greenhouse gas emission intensity.

Language: Английский

Citations

8
Dynamic Response of Soil Enzyme Activities in Riparian Zones: Insights From Vegetation Cover DOI

Zixuan Yan,

Peng Li, Zhanbin Li

et al.

Journal of soil science and plant nutrition, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 16, 2025

Language: Английский

Citations

0
Does Intercropping improve soil aggregation and organic carbon protection? A case-study in the Semi-Arid Mediterranean DOI Creative Commons

Marie Reichmann,

Louise Blanc, Jorge Lampurlanés

et al.

Agriculture Ecosystems & Environment, Journal Year: 2025, Volume and Issue: 385, P. 109563 - 109563

Published: Feb. 21, 2025

Language: Английский

Citations

0
Nitrogen-induced acidification increases soil organic carbon accrual by promoting particulate organic carbon and microbial necromass under long-term experiment in the paddy soils of East China DOI
Zhaoming Chen, Qiang Wang,

Jinchuan Ma

et al.

Research Square (Research Square), Journal Year: 2025, Volume and Issue: unknown

Published: March 27, 2025

Abstract Background and aims Nitrogen (N) addition can substantially affect soil carbon cycling in agroecosystems. Microbial necromass (MNC) is widely recognized as a key contributor to organic C (SOC) fractions. However, the mechanisms underlying responses of MNC SOC fractions N fertilization paddy soils remain unclear. Methods A field experiment with four rates, namely, 0, 300, 450, 600 kg ha–1 yr–1 was conducted determine effects on fractions, microbial (MNC), enzyme activity, biomass rice–wheat rotation. Results increased POC concentrations by 2.88–8.41% 14.6–41.2%, respectively, but did not MAOC. The ratio MAOC reduced addition, indicating that decreased stability. concentration 7.32–22.5% its contribution 4.14–13.7%. activity β-1,4-N-acetyl-glucosaminidase decreased, while activities leucine amino peptidase acid phosphatase were under P addition. Structural equation modeling random forest revealed N-induced decrease pH promoted accrual increasing root biomass, consequently improving POC. Conclusions likely more vulnerable than acidification primary driver for promoting soils.

Language: Английский

Citations

0